SettingsEnvironmental engineering
Activated sludge
Activated sludge is a process for treating sewage and industrial wastewaters using air and a biological floc composed of bacteria and protozoans.
Activated sludge is a process for treating sewage and industrial wastewaters using air and a biological floc composed of bacteria and protozoans.
Aerated lagoon
An aerated lagoon or aerated basin is a holding and/or treatment pond provided with artificial aeration to promote the biological oxidation of wastewaters.
An aerated lagoon or aerated basin is a holding and/or treatment pond provided with artificial aeration to promote the biological oxidation of wastewaters.
Aerobic granular reactor
Aerobic granular reactor is a type of waste treatment facility.
Aerobic granular reactor is a type of waste treatment facility.
Aerobic granulation
Aerobic granulation technology for the application in wastewater treatment is widely developed at laboratory scales.
Aerobic granulation technology for the application in wastewater treatment is widely developed at laboratory scales.
Agricultural wastewater treatment
Agricultural wastewater treatment relates to the treatment of wastewaters produced in the course of agricultural activities.
Agricultural wastewater treatment relates to the treatment of wastewaters produced in the course of agricultural activities.
Air pollutant concentrations
Air pollutant concentrations, as measured or as calculated by air pollution dispersion modeling, must often be converted or corrected to be expressed as required by the regulations issued by va...
Air pollutant concentrations, as measured or as calculated by air pollution dispersion modeling, must often be converted or corrected to be expressed as required by the regulations issued by va...
Air pollution dispersion terminology
Air pollution dispersion terminology includes the words and technical terms that have a special meaning to those who work in the field of air pollution dispersion modeling.
Air pollution dispersion terminology includes the words and technical terms that have a special meaning to those who work in the field of air pollution dispersion modeling.
Air stripping
Air stripping is the transferring of volatile components of a liquid into an air stream.
Air stripping is the transferring of volatile components of a liquid into an air stream.
American Water Works Association
American Water Works Association (AWWA) is an international non-profit professional organization dedicated to the improvement of water quality and supply.
American Water Works Association (AWWA) is an international non-profit professional organization dedicated to the improvement of water quality and supply.
Anaerobic digestion
Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen.
Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen.
AP 42 Compilation of Air Pollutant Emission Factors
The AP 42 Compilation of Air Pollutant Emission Factors, was first published by the U.S. Public Health Service in 1968.
The AP 42 Compilation of Air Pollutant Emission Factors, was first published by the U.S. Public Health Service in 1968.
API oil-water separator
An API oil-water separator is a device designed to separate gross amounts of oil and suspended solids from the wastewater effluents of oil refineries, petrochemical plants, chemical plants, natu...
An API oil-water separator is a device designed to separate gross amounts of oil and suspended solids from the wastewater effluents of oil refineries, petrochemical plants, chemical plants, natu...
Aqueous Wastes from Petroleum and Petrochemical Plants
Aqueous Wastes from Petroleum and Petrochemical Plants is a book about the composition and treatment of the various wastewater streams produced in the hydrocarbon processing industries (i.e....
Aqueous Wastes from Petroleum and Petrochemical Plants is a book about the composition and treatment of the various wastewater streams produced in the hydrocarbon processing industries (i.e....
Association of Environmental Professionals
The Association of Environmental Professionals (AEP) is a California-based non-profit organization of interdisciplinary professionals including environmental science, resource management, enviro...
The Association of Environmental Professionals (AEP) is a California-based non-profit organization of interdisciplinary professionals including environmental science, resource management, enviro...
Atmosphere (unit)
The standard atmosphere is an international reference pressure defined as 101325 Pa and formerly used as unit of pressure.
The standard atmosphere is an international reference pressure defined as 101325 Pa and formerly used as unit of pressure.
Atmospheric dispersion modeling
Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere.
Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere.
Best management practice for water pollution
Best Management Practices (BMP) is a term used in the United States and Canada to describe a type of water pollution control.
Best Management Practices (BMP) is a term used in the United States and Canada to describe a type of water pollution control.
Biofilter
Biofiltration is a pollution control technique using living material to capture and biologically degrade process pollutants.
Biofiltration is a pollution control technique using living material to capture and biologically degrade process pollutants.
Biomanipulation
Biomanipulation is the deliberate alteration of an ecosystem by adding or removing species, especially predators.
Biomanipulation is the deliberate alteration of an ecosystem by adding or removing species, especially predators.
Bioremediation
Bioremediation is the use of microorganism metabolism to remove pollutants.
Bioremediation is the use of microorganism metabolism to remove pollutants.
Bioretention
Bioretention is the process in which contaminants and sedimentation are removed from stormwater runoff.
Bioretention is the process in which contaminants and sedimentation are removed from stormwater runoff.
Bioswale
Bioswales are landscape elements designed to remove silt and pollution from surface runoff water.
Bioswales are landscape elements designed to remove silt and pollution from surface runoff water.
Blue roof
A blue roof is a roof design that is explicitly intended to store water, typically rainfall.
A blue roof is a roof design that is explicitly intended to store water, typically rainfall.
Bluebelt
The Staten Island Bluebelt (also known simply as Bluebelt), is a very large scale system of stormwater best management practices (BMPs) that includes structural and nonstructural stormwate...
The Staten Island Bluebelt (also known simply as Bluebelt), is a very large scale system of stormwater best management practices (BMPs) that includes structural and nonstructural stormwate...
Bridge scour
Bridge scour is the removal of sediment such as sand and rocks from around bridge abutments or piers.
Bridge scour is the removal of sediment such as sand and rocks from around bridge abutments or piers.
Check dam
A check dam is a small dam, which can be either temporary or permanent, built across a minor channel, swale, bioswale, or drainage ditch.
A check dam is a small dam, which can be either temporary or permanent, built across a minor channel, swale, bioswale, or drainage ditch.
Clean-in-place
Clean-in-Place (CIP) is a method of cleaning the interior surfaces of pipes, vessels, process equipment, filters and associated fittings, without disassembly.
Clean-in-Place (CIP) is a method of cleaning the interior surfaces of pipes, vessels, process equipment, filters and associated fittings, without disassembly.
Cleaner production
Cleaner production is a preventive, company-specific environmental protection initiative.
Cleaner production is a preventive, company-specific environmental protection initiative.
Coarse bubble diffusers
Coarse bubble diffusers are a pollution control technology used to aerate and or mix wastewater for sewage treatment.
Coarse bubble diffusers are a pollution control technology used to aerate and or mix wastewater for sewage treatment.
Combined sewer
A combined sewer is a type of sewer system that collects sanitary sewage and stormwater runoff in a single pipe system.
A combined sewer is a type of sewer system that collects sanitary sewage and stormwater runoff in a single pipe system.
Condominial sewerage
Condominial sewerage is the application of simplified sewerage coupled with consultations and ongoing interactions between users and agencies during planning and implementation.
Condominial sewerage is the application of simplified sewerage coupled with consultations and ongoing interactions between users and agencies during planning and implementation.
Confederation of European Environmental Engineering Societies
The Confederation of European Environmental Engineering Societies (CEEES) was created as a co-operative international organization for information exchange regarding environmental engineering be...
The Confederation of European Environmental Engineering Societies (CEEES) was created as a co-operative international organization for information exchange regarding environmental engineering be...
Constructed wetland
A constructed wetland or wetpark is an artificial wetland, marsh or swamp created as a new or restored habitat for native and migratory wildlife, for anthropogenic discharge such as wastew...
A constructed wetland or wetpark is an artificial wetland, marsh or swamp created as a new or restored habitat for native and migratory wildlife, for anthropogenic discharge such as wastew...
Conventional pollutant
A conventional pollutant is a term used in the USA to describe a water pollutant that is amenable to treatment by a municipal sewage treatment plant.
A conventional pollutant is a term used in the USA to describe a water pollutant that is amenable to treatment by a municipal sewage treatment plant.
Cut and fill
Cut and fill in earthmoving is the process of constructing a railway, road or canal whereby the amount of material from cuts roughly matches the amount of fill needed to make nearby embankments,...
Cut and fill in earthmoving is the process of constructing a railway, road or canal whereby the amount of material from cuts roughly matches the amount of fill needed to make nearby embankments,...
Dan Saltzman
Dan Saltzman is an elected commissioner serving in the City Council of Portland in Portland, Oregon.
Dan Saltzman is an elected commissioner serving in the City Council of Portland in Portland, Oregon.
Dark fermentation
Dark fermentation is the fermentative conversion of organic substrate to biohydrogen.
Dark fermentation is the fermentative conversion of organic substrate to biohydrogen.
Depth–slope product
The depth–slope product is used to calculate the shear stress at the bed of an open channel containing fluid that is undergoing steady, uniform flow.
The depth–slope product is used to calculate the shear stress at the bed of an open channel containing fluid that is undergoing steady, uniform flow.
Detention basin
A detention basin is a stormwater management facility installed on, or adjacent to, tributaries of rivers, streams, lakes or bays that is designed to protect against flooding and, in some cases,...
A detention basin is a stormwater management facility installed on, or adjacent to, tributaries of rivers, streams, lakes or bays that is designed to protect against flooding and, in some cases,...
Diffuser (sewage)
An air diffuser or membrane diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer air and with that oxygen into sewage or industrial was...
An air diffuser or membrane diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer air and with that oxygen into sewage or industrial was...
Dissolved air flotation
Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids.
Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids.
Dry well
A dry well is an underground structure that disposes of unwanted water, most commonly stormwater runoff, by dissipa into the ground, where it merges with the local groundwater.
A dry well is an underground structure that disposes of unwanted water, most commonly stormwater runoff, by dissipa into the ground, where it merges with the local groundwater.
Earth systems engineering and management
Earth systems engineering and management (ESEM) is a discipline used to analyze, design, engineer and manage complex environmental systems.
Earth systems engineering and management (ESEM) is a discipline used to analyze, design, engineer and manage complex environmental systems.
EcocyclET systems
EcocyclET is a system that removes pollution through evapotranspiration, using plants' requirements for water and nutrients to filter wastewater.
EcocyclET is a system that removes pollution through evapotranspiration, using plants' requirements for water and nutrients to filter wastewater.
Ecological engineering
Ecological engineering is an emerging study of integrating ecology and engineering, concerned with the design, monitoring and construction of ecosystems.
Ecological engineering is an emerging study of integrating ecology and engineering, concerned with the design, monitoring and construction of ecosystems.
Ecological sanitation
Ecological sanitation, also known as ecosan or eco-san, are terms coined to describe a form of sanitation that usually involves urine diversion and the recycling of water and nutrie...
Ecological sanitation, also known as ecosan or eco-san, are terms coined to describe a form of sanitation that usually involves urine diversion and the recycling of water and nutrie...
EcoProIT
EcoProIT is a project initiated at Chalmers University of Technology at the department of Product and Production Development.
EcoProIT is a project initiated at Chalmers University of Technology at the department of Product and Production Development.
Effluent
Effluent is an outflowing of water or gas from a natural body of water, or from a human-made structure.
Effluent is an outflowing of water or gas from a natural body of water, or from a human-made structure.
Electrocoagulation
Electrocoagulation, also known as Radio Frequency Diathermy or Short Wave Electrolysis, is a technique used for medical treatment and wastewater treatment.
Electrocoagulation, also known as Radio Frequency Diathermy or Short Wave Electrolysis, is a technique used for medical treatment and wastewater treatment.
Electrohydrogenesis
Electrohydrogenesis or biocatalyzed electrolysis is the name given to a process for generating hydrogen gas from organic matter being decomposed by bacteria.
Electrohydrogenesis or biocatalyzed electrolysis is the name given to a process for generating hydrogen gas from organic matter being decomposed by bacteria.
Electromethanogenesis
Electromethanogenesis is a form of electrofuel production where methane is produced by direct biological conversion from electrical current and carbon dioxide.
Electromethanogenesis is a form of electrofuel production where methane is produced by direct biological conversion from electrical current and carbon dioxide.
EMF measurements
EMF measurements are measurements of ambient (surrounding) electromagnetic fields that are taken with particular sensors or probes, such as EMF meters.
EMF measurements are measurements of ambient (surrounding) electromagnetic fields that are taken with particular sensors or probes, such as EMF meters.
Emission intensity
An emission intensity is the average emission rate of a given pollutant from a given source relative to the intensity of a specific activity; for example grams of carbon dioxide released per meg...
An emission intensity is the average emission rate of a given pollutant from a given source relative to the intensity of a specific activity; for example grams of carbon dioxide released per meg...
Environmental engineering
Environmental engineering is the application of science and engineering principles to improve the natural environment (air, water, and/or land resources), to provide healthy water, air, and land...
Environmental engineering is the application of science and engineering principles to improve the natural environment (air, water, and/or land resources), to provide healthy water, air, and land...
Environmental engineering law
Environmental engineering law is a profession that requires an expertise in both environmental engineering and law.
Environmental engineering law is a profession that requires an expertise in both environmental engineering and law.
Environmental engineering science
Environmental engineering science is a multidisciplinary field of engineering science that combines the biological, chemical and physical sciences with the field of engineering.
Environmental engineering science is a multidisciplinary field of engineering science that combines the biological, chemical and physical sciences with the field of engineering.
Environmental mitigation
Environmental mitigation, compensatory mitigation, or mitigation banking, are terms used primarily by the United States government and the related environmental industry to describe projec...
Environmental mitigation, compensatory mitigation, or mitigation banking, are terms used primarily by the United States government and the related environmental industry to describe projec...
Envotherm
Envotherm is a product range based on the mechanical vapor recompression technology and along with a patented absorber this product is an energy efficient solution for effluent treatment.
Envotherm is a product range based on the mechanical vapor recompression technology and along with a patented absorber this product is an energy efficient solution for effluent treatment.
EPANET
EPANET is a public-domain, water distribution system modeling software package developed by the United States Environmental Protection Agency's Water Supply and Water Resources Division.
EPANET is a public-domain, water distribution system modeling software package developed by the United States Environmental Protection Agency's Water Supply and Water Resources Division.
Extended aeration
Extended aeration is a method of sewage treatment using modified activated sludge procedures.
Extended aeration is a method of sewage treatment using modified activated sludge procedures.
Facultative lagoon
Facultative lagoons are a type of stabilization pond used for biological treatment of industrial and domestic wastewater.
Facultative lagoons are a type of stabilization pond used for biological treatment of industrial and domestic wastewater.
Fermentative hydrogen production
Fermentative hydrogen production is the fermentative conversion of organic substrate to biohydrogen manifested by a diverse group of bacteria using multi enzyme systems involving three steps sim...
Fermentative hydrogen production is the fermentative conversion of organic substrate to biohydrogen manifested by a diverse group of bacteria using multi enzyme systems involving three steps sim...
Fine bubble diffusers
Fine bubble diffusers are a pollution control technology used to aerate wastewater for sewage treatment.
Fine bubble diffusers are a pollution control technology used to aerate wastewater for sewage treatment.
First flush
First flush is the initial surface runoff of a rainstorm.
First flush is the initial surface runoff of a rainstorm.
Flood control channel
Flood control channels are a series of large and empty (except when a flood is actually present) open-air channels that extend a ways below the street levels of some larger cities, so that if an...
Flood control channels are a series of large and empty (except when a flood is actually present) open-air channels that extend a ways below the street levels of some larger cities, so that if an...
Flood Studies Report
The Flood Studies Report, published in 1975, is used in relation to rainfall events in the United Kingdom.
The Flood Studies Report, published in 1975, is used in relation to rainfall events in the United Kingdom.
Flue gas
Flue gas is gas that exits to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator.
Flue gas is gas that exits to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator.
Flue gas emissions from fossil fuel combustion
Flue gas emissions from fossil fuel combustion refers to the combustion product gas resulting from the much as 10 to 25 volume percent or more of the flue gas.
Flue gas emissions from fossil fuel combustion refers to the combustion product gas resulting from the much as 10 to 25 volume percent or more of the flue gas.
Flue-gas desulfurization
Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting p...
Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting p...
Flue-gas emissions from fossil-fuel combustion
Flue-gas emissions from fossil-fuel combustion refers to the combustion product gas resulting from the burning of fossil fuels.
Flue-gas emissions from fossil-fuel combustion refers to the combustion product gas resulting from the burning of fossil fuels.
French drain
A French drain, blind drain, rubble drain, rock drain, drain tile, perimeter drain, land drain or French ditch is a trench covered with gravel or rock t...
A French drain, blind drain, rubble drain, rock drain, drain tile, perimeter drain, land drain or French ditch is a trench covered with gravel or rock t...
Fundamentals of Stack Gas Dispersion
Fundamentals of Stack Gas Dispersion is a book devoted to the fundamentals of air pollution dispersion modeling of continuous, buoyant pollution plumes from stationary point sources.
Fundamentals of Stack Gas Dispersion is a book devoted to the fundamentals of air pollution dispersion modeling of continuous, buoyant pollution plumes from stationary point sources.
Global Challenge Award
The Global Challenge Award is responsible for identification of high school students who represent the United States in the International Earth Science Olympiad or IESO. Students and teachers tr...
The Global Challenge Award is responsible for identification of high school students who represent the United States in the International Earth Science Olympiad or IESO. Students and teachers tr...
Green Bridge(filtration system)
Green Bridges are an ecotechnological in-situ horizontal filtration system having different physical and biological filters working in combination to remove suspended and dissolved impurities of...
Green Bridges are an ecotechnological in-situ horizontal filtration system having different physical and biological filters working in combination to remove suspended and dissolved impurities of...
Green infrastructure
Green Infrastructure is a concept originating in the United States in the mid-1990s that highlights the importance of the natural environment in decisions about land use planning.
Green Infrastructure is a concept originating in the United States in the mid-1990s that highlights the importance of the natural environment in decisions about land use planning.
Green roof
A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane.
A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane.
Hurricane engineering
Hurricane engineering is a specialist sub-discipline of civil engineering that encompasses planning, analysis, design, response, and recovery of civil engineering systems and infrastructure for ...
Hurricane engineering is a specialist sub-discipline of civil engineering that encompasses planning, analysis, design, response, and recovery of civil engineering systems and infrastructure for ...
Hydraulic retention time
The Hydraulic retention time (HRT) also known as Hydraulic residence time or t (tau), is a measure of the average length of time that a soluble compound remains in a constructed bior...
The Hydraulic retention time (HRT) also known as Hydraulic residence time or t (tau), is a measure of the average length of time that a soluble compound remains in a constructed bior...
Hydraulics
Hydraulics is a topic in applied science and engineering dealing with the mechanical properties of liquids.
Hydraulics is a topic in applied science and engineering dealing with the mechanical properties of liquids.
Hydrodynamic separator
Hydrodynamic separators (HDS) are stormwater management devices used to control water pollution.
Hydrodynamic separators (HDS) are stormwater management devices used to control water pollution.
Hydroinformatics
Hydroinformatics is a branch of informatics which concentrates on the application of information and communications technologies (ICTs) in addressing the increasingly serious problems of the equ...
Hydroinformatics is a branch of informatics which concentrates on the application of information and communications technologies (ICTs) in addressing the increasingly serious problems of the equ...
Hydrology
Hydrology is the study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability.
Hydrology is the study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability.
Induced gas flotation
Induced Gas Flotation (IGF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids.
Induced Gas Flotation (IGF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids.
Industrial wastewater treatment
Industrial wastewater treatment covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to it...
Industrial wastewater treatment covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to it...
Integrated Constructed Wetland
The phrase Integrated Constructed Wetland (ICW) was invented in 1990 by Dr Rory Harrington who works for the Irish Department of Environment, Heritage and Local Government (Harrington and Ryder,...
The phrase Integrated Constructed Wetland (ICW) was invented in 1990 by Dr Rory Harrington who works for the Irish Department of Environment, Heritage and Local Government (Harrington and Ryder,...
Integrated constructed wetland
The phrase integrated constructed wetland was invented in 1990 by Dr Rory Harrington who works for the Irish Department of Environment, Heritage and Local Government.
The phrase integrated constructed wetland was invented in 1990 by Dr Rory Harrington who works for the Irish Department of Environment, Heritage and Local Government.
International trade and water
International trade and water is a term that is used to describe the relationship between international trade and the water being used by humans.
International trade and water is a term that is used to describe the relationship between international trade and the water being used by humans.
Jet aerators
Jet aerators are applied across a wide range of wastewater and biosolids treatment applications.
Jet aerators are applied across a wide range of wastewater and biosolids treatment applications.
Journal of Environmental Engineering
The Journal of Environmental Engineering is a monthly engineering journal published by the American Society of Civil Engineers.
The Journal of Environmental Engineering is a monthly engineering journal published by the American Society of Civil Engineers.
LITPACK
LITPACK is a computer program that simulates sediment transport for a large number of wave/current scenarios and for the combination of these simulations into predictions of the net littoral dri...
LITPACK is a computer program that simulates sediment transport for a large number of wave/current scenarios and for the combination of these simulations into predictions of the net littoral dri...
Living machines
Living Machine is a trademark and brand name for a form of biological wastewater treatment designed to mimic the cleansing functions of wetlands developed and marketed by Worrell Water Technolo...
Living Machine is a trademark and brand name for a form of biological wastewater treatment designed to mimic the cleansing functions of wetlands developed and marketed by Worrell Water Technolo...
Low impact development
Low impact development is a term used in the United States to describe a land planning and engineering design approach to managing stormwater runoff.
Low impact development is a term used in the United States to describe a land planning and engineering design approach to managing stormwater runoff.
Low-impact development
Low impact development (LID) is a term used in the United States to describe a land planning and engineering design approach to managing stormwater runoff.
Low impact development (LID) is a term used in the United States to describe a land planning and engineering design approach to managing stormwater runoff.
Marine outfall
A marine outfall is a pipeline or tunnel that discharges municipal or industrial wastewater, stormwater, combined sewer overflows, cooling water, or brine effluents from water desalination plant...
A marine outfall is a pipeline or tunnel that discharges municipal or industrial wastewater, stormwater, combined sewer overflows, cooling water, or brine effluents from water desalination plant...
Materials recovery facility
A materials recovery facility or materials reclamation facility or materials recycling facility (MRF - pronounced "murf") is a specialized plant that receives, separates and pr...
A materials recovery facility or materials reclamation facility or materials recycling facility (MRF - pronounced "murf") is a specialized plant that receives, separates and pr...
Mechanical biological treatment
A mechanical biological treatment system is a type of waste processing facility that combines a sorting facility with a form of biological treatment such as composting or anaerobic digestion.
A mechanical biological treatment system is a type of waste processing facility that combines a sorting facility with a form of biological treatment such as composting or anaerobic digestion.
Media filter
A media filter is a type of filter that uses a bed of sand, crushed granite or other material to filter water for drinking, swimming pools, aquaculture, irrigation, stormwater management and oth...
A media filter is a type of filter that uses a bed of sand, crushed granite or other material to filter water for drinking, swimming pools, aquaculture, irrigation, stormwater management and oth...
Membrane bioreactor
Membrane bioreactor (MBR) is the combination of a membrane process like microfiltration or ultrafiltration with a suspended growth bioreactor, and is now widely used for municipal and industrial...
Membrane bioreactor (MBR) is the combination of a membrane process like microfiltration or ultrafiltration with a suspended growth bioreactor, and is now widely used for municipal and industrial...
MEMO Model
The MEMO Model (version 6.2) is a Eulerian non-hydrostatic prognostic mesoscale model for wind flow simulation.
The MEMO Model (version 6.2) is a Eulerian non-hydrostatic prognostic mesoscale model for wind flow simulation.
Mesohabitat Simulation Model
Mesohabitat Simulation Model, created by Dr. Piotr Parasiewicz addresses the requirements of watershed-based management of running waters and is designed to predict an aquatic community's respon...
Mesohabitat Simulation Model, created by Dr. Piotr Parasiewicz addresses the requirements of watershed-based management of running waters and is designed to predict an aquatic community's respon...
MIKE 11
MIKE 11 is a computer program that simulates flow and water level, water quality and sediment transport in rivers, flood plains, irrigation canals, reservoirs and other inland water bodies.
MIKE 11 is a computer program that simulates flow and water level, water quality and sediment transport in rivers, flood plains, irrigation canals, reservoirs and other inland water bodies.
MIKE 21
MIKE 21 is a computer program that simulates flows, waves, sediments and ecology in rivers, lakes, estuaries, bays, coastal areas and seas in two dimensions.
MIKE 21 is a computer program that simulates flows, waves, sediments and ecology in rivers, lakes, estuaries, bays, coastal areas and seas in two dimensions.
MIKE 21C
MIKE 21C is a computer program that simulates the development in the river bed and channel plan form in two dimensions.
MIKE 21C is a computer program that simulates the development in the river bed and channel plan form in two dimensions.
MIKE 3
MIKE 3 is a computer program that simulates flows, cohesive sediments, water quality,and ecology in rivers, lakes, estuaries, bays, coastal areas and seas in three dimensions.
MIKE 3 is a computer program that simulates flows, cohesive sediments, water quality,and ecology in rivers, lakes, estuaries, bays, coastal areas and seas in three dimensions.
MIKE BASIN
MIKE BASIN is an extension of ArcMap (ESRI) for integrated water resources management and planning.
MIKE BASIN is an extension of ArcMap (ESRI) for integrated water resources management and planning.
MIKE FLOOD
MIKE FLOOD is a computer program that simulates inundation for rivers, flood plains and urban drainage systems.
MIKE FLOOD is a computer program that simulates inundation for rivers, flood plains and urban drainage systems.
MIKE SHE
MIKE SHE is an integrated hydrological modelling system for building and simulating surface water flow and groundwater flow.
MIKE SHE is an integrated hydrological modelling system for building and simulating surface water flow and groundwater flow.
MIKE URBAN
MIKE URBAN is a GIS-based urban modeling system for water distribution systems and wastewater collection systems.
MIKE URBAN is a GIS-based urban modeling system for water distribution systems and wastewater collection systems.
Mobile Emission Reduction Credit
A Mobile Emission Reduction Credit (MERC) is an emission reduction credit generated within the transportation sector.
A Mobile Emission Reduction Credit (MERC) is an emission reduction credit generated within the transportation sector.
Mobile emission reduction credit
A mobile emission reduction credit is an emission reduction credit generated within the transportation sector.
A mobile emission reduction credit is an emission reduction credit generated within the transportation sector.
Modified active gas sampling
Modified Active Gas Sampling (MAGS) is an environmental engineering assessment technique which rapidly detects unsaturated soil source areas impacted by volatile organic compounds.
Modified Active Gas Sampling (MAGS) is an environmental engineering assessment technique which rapidly detects unsaturated soil source areas impacted by volatile organic compounds.
MOHID Land
MOHID Land is the hydrology module within the three-dimensional MOHID Water Modelling System.
MOHID Land is the hydrology module within the three-dimensional MOHID Water Modelling System.
Monod equation
The Monod equation is a mathematical model for the growth of microorganisms.
The Monod equation is a mathematical model for the growth of microorganisms.
MOSE Project
The MOSE (MOdulo Sperimentale Elettromeccanico, Experimental Electromechanical Module) is a project intended to protect the city of Venice, Italy from floods.
The MOSE (MOdulo Sperimentale Elettromeccanico, Experimental Electromechanical Module) is a project intended to protect the city of Venice, Italy from floods.
Mound system
A mound system is an alternative to the traditional rural septic system leach field.
A mound system is an alternative to the traditional rural septic system leach field.
MOUSE DHI
MOUSE is, the short name of MOdel for Urban SEwers, a computer program that models collection system for urban wasterwater and stormwater.
MOUSE is, the short name of MOdel for Urban SEwers, a computer program that models collection system for urban wasterwater and stormwater.
NERV (Reactor)
The NERV system allows the bacteria cultures within the reactor to be controlled both by type and volume.
The NERV system allows the bacteria cultures within the reactor to be controlled both by type and volume.
NERV (reactor)
The NERV is a specialised bioreactor, designed to operate under high and varying load and flow conditions.
The NERV is a specialised bioreactor, designed to operate under high and varying load and flow conditions.
Noise barrier
A noise barrier (also called a soundwall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect sensitive land uses from noise po...
A noise barrier (also called a soundwall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect sensitive land uses from noise po...
Olszewski tube
An Olszewski tube is an artificially installed sea outlet designed to siphon anoxic water from the hypolimnion, the bottom of sea, to combat the negative effect of high nutrient load in the sea.
An Olszewski tube is an artificially installed sea outlet designed to siphon anoxic water from the hypolimnion, the bottom of sea, to combat the negative effect of high nutrient load in the sea.
Pan evaporation
Pan evaporation is a measurement that combines or integrates the effects of several climate elements: temperature, humidity, rain fall, drought dispertion,solar radiation, and wind.
Pan evaporation is a measurement that combines or integrates the effects of several climate elements: temperature, humidity, rain fall, drought dispertion,solar radiation, and wind.
Percolation trench
A percolation trench, also called an infiltration trench, is a type of best management practice that is used to manage stormwater runoff, prevent flooding and downstream erosion, and impro...
A percolation trench, also called an infiltration trench, is a type of best management practice that is used to manage stormwater runoff, prevent flooding and downstream erosion, and impro...
Permeable paving
Permeable paving is a range of materials and techniques for paving roads, cycle-paths, parking lots and sidewalks that allow the movement of water and air through the paving material.
Permeable paving is a range of materials and techniques for paving roads, cycle-paths, parking lots and sidewalks that allow the movement of water and air through the paving material.
Pervious concrete
Pervious concrete is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, ther...
Pervious concrete is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, ther...
Pesticide application
Pesticide application refers to the practical way in which pesticides, (including herbicides, fungicides, insecticides, or nematode control agents) are delivered to their biological targets ...
Pesticide application refers to the practical way in which pesticides, (including herbicides, fungicides, insecticides, or nematode control agents) are delivered to their biological targets ...
Photofermentation
Photofermentation is the fermentative conversion of organic substrate to biohydrogen manifested by a diverse group of photosynthetic bacteria by a series of biochemical reactions involving three...
Photofermentation is the fermentative conversion of organic substrate to biohydrogen manifested by a diverse group of photosynthetic bacteria by a series of biochemical reactions involving three...
Phytoremediation
Phytoremediation describes the treatment of environmental problems through the use of plants that mitigate the environmental problem without the need to excavate the contaminant material and dis...
Phytoremediation describes the treatment of environmental problems through the use of plants that mitigate the environmental problem without the need to excavate the contaminant material and dis...
Piezometer
A piezometer is a small-diameter observation well used to measure the hydraulic head of groundwater in aquifers.
A piezometer is a small-diameter observation well used to measure the hydraulic head of groundwater in aquifers.
Pneumatic bladder
A pneumatic bladder is an inflatable (pneumatic) bag technology with many applications.
A pneumatic bladder is an inflatable (pneumatic) bag technology with many applications.
Powdered activated carbon treatment
Powdered Activated Carbon Treatment (PACT) is a wastewater technology in which powdered activated carbon is added to an anaerobic or aerobic treatment system.
Powdered Activated Carbon Treatment (PACT) is a wastewater technology in which powdered activated carbon is added to an anaerobic or aerobic treatment system.
Pt/Co scale
The Platinum-Cobalt Scale (Pt/Co scale or Apha-Hazen Scale ) is a color scale that was introduced in 1892 by chemist Allen Hazen (1869-1930).
The Platinum-Cobalt Scale (Pt/Co scale or Apha-Hazen Scale ) is a color scale that was introduced in 1892 by chemist Allen Hazen (1869-1930).
Rain garden
A rain garden is a planted depression that allows rainwater runoff from impervious urban areas like roofs, driveways, walkways, parking lots, and compacted lawn areas the opportunity to be absorbed.
A rain garden is a planted depression that allows rainwater runoff from impervious urban areas like roofs, driveways, walkways, parking lots, and compacted lawn areas the opportunity to be absorbed.
RDF-Powerstation
The RDF-PowerStation is a peripheral thermal recovery plant, which is based on renewable energy (especially on Refuse derived fuel (RDF)).
The RDF-PowerStation is a peripheral thermal recovery plant, which is based on renewable energy (especially on Refuse derived fuel (RDF)).
Regenerative thermal oxidizer
A regenerative thermal oxidizer (RTO) is an industrial process for the treatment of exhaust air.
A regenerative thermal oxidizer (RTO) is an industrial process for the treatment of exhaust air.
Retention basin
A retention basin is a type of best management practice (BMP) that is used to manage stormwater runoff to prevent flooding and downstream erosion, and improve water quality in an adjacent ri...
A retention basin is a type of best management practice (BMP) that is used to manage stormwater runoff to prevent flooding and downstream erosion, and improve water quality in an adjacent ri...
Retrofitting
Retrofitting refers to the addition of new technology or features to older systems.
Retrofitting refers to the addition of new technology or features to older systems.
Revetment
Revetments, or revêtements (the original French word, meaning something to re-cloth or re-cover), have a variety of meanings in architecture, engineering and art history.
Revetments, or revêtements (the original French word, meaning something to re-cloth or re-cover), have a variety of meanings in architecture, engineering and art history.
River engineering
River engineering is the process of planned human intervention in the course, characteristics or flow of a river with the intention of producing some defined benefit.
River engineering is the process of planned human intervention in the course, characteristics or flow of a river with the intention of producing some defined benefit.
River Linking
River Linking is project linking two or more rivers by creating a network of manually created canals, and providing land areas that otherwise does not have river water access and reducing the fl...
River Linking is project linking two or more rivers by creating a network of manually created canals, and providing land areas that otherwise does not have river water access and reducing the fl...
Room temperature
Room temperature is a general term describing common indoor temperatures.
Room temperature is a general term describing common indoor temperatures.
Rotating biological contactor
A rotating biological contactor or RBC is a biological treatment process used in the treatment of wastewater following primary treatment.
A rotating biological contactor or RBC is a biological treatment process used in the treatment of wastewater following primary treatment.
Sanitary sewer
A sanitary sewer is a separate underground carriage system specifically for transporting sewage from houses and commercial buildings to treatment or disposal.
A sanitary sewer is a separate underground carriage system specifically for transporting sewage from houses and commercial buildings to treatment or disposal.
Sediment transport
Sediment transport is the movement of solid particles (sediment), typically due to a combination of the force of gravity acting on the sediment, and/or the movement of the fluid in which the sed...
Sediment transport is the movement of solid particles (sediment), typically due to a combination of the force of gravity acting on the sediment, and/or the movement of the fluid in which the sed...
Septic drain field
Septic drain fields are used to remove contaminants and impurities from the liquid that emerges from the septic tank.
Septic drain fields are used to remove contaminants and impurities from the liquid that emerges from the septic tank.
Sequencing batch reactor
Sequencing batch reactors (SBR) or sequential batch reactors are industrial processing tanks for the treatment of wastewater.
Sequencing batch reactors (SBR) or sequential batch reactors are industrial processing tanks for the treatment of wastewater.
Settling basin
A settling basin, settling pond or decant pond are devices used to treat turbidity in industrial wastewater.
A settling basin, settling pond or decant pond are devices used to treat turbidity in industrial wastewater.
Sewage collection and disposal
Sewage collection and disposal systems transport through cities and other inhabited areas to sewage treatment plants to protect public health and prevent disease.
Sewage collection and disposal systems transport through cities and other inhabited areas to sewage treatment plants to protect public health and prevent disease.
Sewage treatment
Sewage treatment is the process of removing contaminants from wastewater and household sewage, both runoff (effluents) and domestic.
Sewage treatment is the process of removing contaminants from wastewater and household sewage, both runoff (effluents) and domestic.
Simplified sewerage
Simplified sewerage is a low-cost sewer system that collects all household wastewater in small-diameter pipes laid at fairly flat gradients.
Simplified sewerage is a low-cost sewer system that collects all household wastewater in small-diameter pipes laid at fairly flat gradients.
Standard conditions for temperature and pressure
Standard condition for temperature and pressure are standard sets of conditions for experimental measurements established to allow comparisons to be made between different sets of data.
Standard condition for temperature and pressure are standard sets of conditions for experimental measurements established to allow comparisons to be made between different sets of data.
Storm drain
A storm drain, storm sewer, stormwater drain or drainage well system or simply a drain or drain system is designed to drain excess rain and ground water from pave...
A storm drain, storm sewer, stormwater drain or drainage well system or simply a drain or drain system is designed to drain excess rain and ground water from pave...
Stormwater detention vault
A stormwater detention vault is an underground structure designed to manage excess stormwater runoff on a developed site, often in an urban setting.
A stormwater detention vault is an underground structure designed to manage excess stormwater runoff on a developed site, often in an urban setting.
Stream restoration
Stream restoration or river restoration, sometimes called river reclamation in the UK, describes a set of activities that help improve the environmental health of a river or stream.
Stream restoration or river restoration, sometimes called river reclamation in the UK, describes a set of activities that help improve the environmental health of a river or stream.
Streeter-Phelps equation
The Streeter-Phelps equation is used within the area of water pollution as a water quality modelling tool.
The Streeter-Phelps equation is used within the area of water pollution as a water quality modelling tool.
Subtropical Climate Vegetated Roof
A subtropical climate vegetated roof (SCV roof) is a type of green building practice that employs a planted soil media installed above a waterproof roof deck to obtain environmental benefi...
A subtropical climate vegetated roof (SCV roof) is a type of green building practice that employs a planted soil media installed above a waterproof roof deck to obtain environmental benefi...
Subtropical climate vegetated roof
A subtropical climate vegetated roof is a type of green building practice that employs a planted soil media installed above a waterproof roof deck to obtain environmental benefits and address su...
A subtropical climate vegetated roof is a type of green building practice that employs a planted soil media installed above a waterproof roof deck to obtain environmental benefits and address su...
Sustainable urban drainage systems
Sustainable Drainage Systems, sometimes known as Sustainable Urban Drainage Systems, are designed to reduce the potential impact of new and existing developments with respect to surface wa...
Sustainable Drainage Systems, sometimes known as Sustainable Urban Drainage Systems, are designed to reduce the potential impact of new and existing developments with respect to surface wa...
Swale (geographic feature)
A swale is a low tract of land, especially one that is moist or marshy.
A swale is a low tract of land, especially one that is moist or marshy.
SWAT model
SWAT (Soil Water Assessment Tool) is an hydrology model with the following components: weather, surface runoff, return flow, percolation, evapotranspiration, transmission losses, pond and ...
SWAT (Soil Water Assessment Tool) is an hydrology model with the following components: weather, surface runoff, return flow, percolation, evapotranspiration, transmission losses, pond and ...
T5 retrofit conversion
T5 retrofit conversion is a means of converting light fittings designed to use T8 format lamps, so that they can use more energy-efficient T5 lamps.
T5 retrofit conversion is a means of converting light fittings designed to use T8 format lamps, so that they can use more energy-efficient T5 lamps.
Temporal Analyst
Temporal Analyst is an extension of ArcMap (ESRI) for storage, management, processing, plotting and analysis of virtually any time-releated data inside ArcGISTM application and was develop...
Temporal Analyst is an extension of ArcMap (ESRI) for storage, management, processing, plotting and analysis of virtually any time-releated data inside ArcGISTM application and was develop...
The Control of Nature (book)
The Control of Nature is a 1989 book by John McPhee that chronicles three attempts (with varying success) to control natural processes.
The Control of Nature is a 1989 book by John McPhee that chronicles three attempts (with varying success) to control natural processes.
The Reef Ball Foundation
The Reef Ball Foundation, Inc. is a 501 publicly supported non-profit organization that functions as an international environmental Non-governmental organization.
The Reef Ball Foundation, Inc. is a 501 publicly supported non-profit organization that functions as an international environmental Non-governmental organization.
Treatment wetland
A Treatment wetland is an engineered sequence of water bodies designed to filter and treat waterborne pollutants found in storm water runoff or effluent.
A Treatment wetland is an engineered sequence of water bodies designed to filter and treat waterborne pollutants found in storm water runoff or effluent.
Trickling filter
A trickling filter consists of a fixed bed of rocks, lava, coke, gravel, slag, polyurethane foam, sphagnum peat moss, ceramic, or plastic media over which sewage or other wastewater flows downw...
A trickling filter consists of a fixed bed of rocks, lava, coke, gravel, slag, polyurethane foam, sphagnum peat moss, ceramic, or plastic media over which sewage or other wastewater flows downw...
Units conversion by factor-label
The factor-label method, also known as the unit-factor method or dimensional analysis, is a widely used approach for performing such conversions.
The factor-label method, also known as the unit-factor method or dimensional analysis, is a widely used approach for performing such conversions.
Urban stream
An urban stream is a formerly natural waterway that flows through a heavily populated area.
An urban stream is a formerly natural waterway that flows through a heavily populated area.
Useful conversions and formulas for air dispersion modeling
This article presents a set of useful conversions and formulas for air dispersion modeling of atmospheric pollutants and for complying with the various regulations as to how to express the conc...
This article presents a set of useful conversions and formulas for air dispersion modeling of atmospheric pollutants and for complying with the various regulations as to how to express the conc...
Vflo
Vflo is a commercially available, physics-based distributed hydrologic model generated by Vieux & Associates, Inc. Vflo uses radar rainfall data for hydrologic input to simulate distrib...
Vflo is a commercially available, physics-based distributed hydrologic model generated by Vieux & Associates, Inc. Vflo uses radar rainfall data for hydrologic input to simulate distrib...
Wastewater
Wastewater, also spelled waste water, is any water that has been adversely affected in quality by anthropogenic influence.
Wastewater, also spelled waste water, is any water that has been adversely affected in quality by anthropogenic influence.
Wastewater quality indicators
Wastewater quality indicators such as the biochemical oxygen demand and the chemical oxygen demand are essentially laboratory tests to determine whether or not a specific wastewater will have a ...
Wastewater quality indicators such as the biochemical oxygen demand and the chemical oxygen demand are essentially laboratory tests to determine whether or not a specific wastewater will have a ...
Water Environment Federation
The Water Environment Federation (WEF) is an organization of engineers and industry related to wastewater, water, and water reuse.
The Water Environment Federation (WEF) is an organization of engineers and industry related to wastewater, water, and water reuse.
Water quality modelling
Water quality modelling involves the prediction of water pollution using mathematical simulation techniques.
Water quality modelling involves the prediction of water pollution using mathematical simulation techniques.
Water supply network
A water supply system or water supply network is a system of engineered hydrologic and hydraulic components which provide water supply.
A water supply system or water supply network is a system of engineered hydrologic and hydraulic components which provide water supply.
WEAP
WEAP: the Water Evaluation And Planning system is a Windows-based decision support system for integrated water resources management and policy analysis.
WEAP: the Water Evaluation And Planning system is a Windows-based decision support system for integrated water resources management and policy analysis.
Wellman-Lord process
The Wellman-Lord process is a regenerable process to remove sulfur dioxide from flue gas (flue-gas desulfurization) without creating a throwaway sludge product.
The Wellman-Lord process is a regenerable process to remove sulfur dioxide from flue gas (flue-gas desulfurization) without creating a throwaway sludge product.
Weyburn-Midale Carbon Dioxide Project
The Weyburn-Midale Carbon Dioxide Project (or IEA GHG Weyburn-Midale Monitoring and Storage Project) is, as of 2008, the world's largest carbon capture and storage project.
The Weyburn-Midale Carbon Dioxide Project (or IEA GHG Weyburn-Midale Monitoring and Storage Project) is, as of 2008, the world's largest carbon capture and storage project.
Windrow composting
In agriculture, windrow composting is the production of compost by piling organic matter or biodegradable waste, such as animal manure and crop residues, in long rows (windrows).
In agriculture, windrow composting is the production of compost by piling organic matter or biodegradable waste, such as animal manure and crop residues, in long rows (windrows).
WMS (hydrology software)
WMS (Watershed Modeling System) is a complete program for developing watershed computer simulations.
WMS (Watershed Modeling System) is a complete program for developing watershed computer simulations.