acidity The capacity of an aqueous solution to neutralize a base acidophil (1)A cell or substance easily stained by acid dyes. (2)An organism that has an affinity for, and grows in, an acidic environment. Also spelled"acidophile ACL Alternate concentration limit ACM Asbestos-containing material ACM Thin film composite reverse osmosis membrane by TriSep Corp Acme Former screening equipment manufacturer. ACM-LPTM Low pressure thin film composite reverse osmosis membrane by iSep Corp ACMSTM Seawater reverse osmosis membrane by TriSep Corp ACoe U.S. Army Corps of Engineers Acousticair Low noise blowers by Tuthill Pneumatics Group ACP Air Carcinogen Policy he volume of water that would cover a one ea one foot deep Equivalent to approximately 1233. 6 cubic meters or 325,900 gallons acrolein An aldehyde compound used as a microbicide in the manufacture of Acro-Pac Packaged seawater reverse osmosis system by Aqua-Chem, Inc ACS-Plus High purity chemicals for laboratory use by Hach Co. ACT-100 Double wall fiberglass laminated steel underground tank by Steel Tank Institute ACTTM Combined aeration technologies by Aeration Industries, Inc Acticarbone Activated carbon by Elf Atochem North America, Inc Actifir Packing media for biological reactors by Sanitaire Corp. Actiflo High rate sedimentation process for water and wastewater treatment by USFilter/Kruger. ActifilocTM Modular, high-rate water treatment plant by USFilter/General Filter. recognized as a source of musty or earthy odors in drinking water ungi, and Actinomycetes A group of bacteria that share some features with activated alumina A partially dehydrated form of aluminum oxide frequently used as an adsorbent. Chemical formula is ALo Activated Biofilm Method Fixed film wastewater treatment system by JDV Equip- ment Corp activated biofilter A fixed film biological wastewater treatment process where a portion of the secondary sludge is returned to the reactor influent. activated carbon(AC) A highly adsorbent form of carbon used to remove dis- solved organic matter from water and wastewater or odors and toxic substances from gaseous emissions. activated charcoal See"activated carbon activated sludge The biologically active solids in an activated sludge process astewater treatment plant. activated sludge process A biological wastewater treatment process where a mix ture of wastewater and biologically enriched sludge is mixed and aerated to facilitate aerobic decomposition by microbes activation energy The energy required to initiate a process or reaction Activator Package wastewater treatment plant by Pollution Control, Inc
acidity The capacity of an aqueous solution to neutralize a base. acidophil (1) A cell or substance easily stained by acid dyes. (2) An organism that has an affinity for, and grows in, an acidic environment. Also spelled “acidophile.” ACL Alternate concentration limit. ACM Asbestos-containing material. ACM® Thin film composite reverse osmosis membrane by TriSep Corp. Acme Former screening equipment manufacturer. ACM-LP™ Low pressure thin film composite reverse osmosis membrane by TriSep Corp. ACMS™ Seawater reverse osmosis membrane by TriSep Corp. ACoE U.S. Army Corps of Engineers. Acousticair® Low noise blowers by Tuthill Pneumatics Group. ACP Air Carcinogen Policy. acre-foot The volume of water that would cover a one acre area one foot deep. Equivalent to approximately 1233.6 cubic meters or 325,900 gallons. acrolein An aldehyde compound used as a microbiocide in the manufacture of organic chemicals. Acro-Pac® Packaged seawater reverse osmosis system by Aqua-Chem, Inc. ACS-Plus High purity chemicals for laboratory use by Hach Co. ACT-100® Double wall fiberglass laminated steel underground tank by Steel Tank Institute. ACT™ Combined aeration technologies by Aeration Industries, Inc. Acticarbone® Activated carbon by Elf Atochem North America, Inc. Actifil® Packing media for biological reactors by Sanitaire Corp. Actiflo® High rate sedimentation process for water and wastewater treatment by USFilter/Krüger. Actifloc™ Modular, high-rate water treatment plant by USFilter/General Filter. Actinomycetes A group of bacteria that share some features with fungi, and recognized as a source of musty or earthy odors in drinking water. activated alumina A partially dehydrated form of aluminum oxide frequently used as an adsorbent. Chemical formula is Al2O3. Activated Biofilm Method Fixed film wastewater treatment system by JDV Equipment Corp. activated biofilter A fixed film biological wastewater treatment process where a portion of the secondary sludge is returned to the reactor influent. activated carbon (AC) A highly adsorbent form of carbon used to remove dissolved organic matter from water and wastewater or odors and toxic substances from gaseous emissions. activated charcoal See “activated carbon.” activated sludge The biologically active solids in an activated sludge process wastewater treatment plant. activated sludge process A biological wastewater treatment process where a mixture of wastewater and biologically enriched sludge is mixed and aerated to facilitate aerobic decomposition by microbes. activation energy The energy required to initiate a process or reaction. Activator Package wastewater treatment plant by Pollution Control, Inc
activator A chemical added to a pesticide to increase its activity Activator II Oil recovery product by Sybron Chemicals, Inc. active ingredient In any pesticide product, the component that kills, or otherwise active life The period of operation of a facility that begins with initial receipt of a solid waste and ends at completion of closure activities. active portion Any area of a facility where treatment, storage, or disposal opera tions continue to be conducted active solar heating A heating system that derives heat from the suns rays and incorporates active devices such as pumps or blowers to move heat from the point of collection to the point of storage or use. ActivolM Wastewater grease emulsifier by Probiotic Solutions Acumen Reverse osmosis product formerly offered by USFilter Acumer Water treatment polymers by Rohm and Haas, Co acute exposure A single exposure to a toxic substance, usually lasting no longer than a day, which results in severe biological harm or death. acute toxicity A poisonous effect produced by a single short-term exposure which results in severe biological harm or death Acutec Gas detection system by USFilter/Wallace Tiernan ACWA American Clean Water Association ACWM (1)Asbestos-containing waste material. (2) Seeasbestos-containing aste materials(ACUM). AD Dry blending and dilution system by Komax Systems, Inc ADA American Desalting Association. Formerly"NWSIA ADAM Acryloyl ethyl dimethyl amine. adaptation Changes in an organism's structure or habits which help it adjust to Adcatm Oxidation catalyst systems for air pollution control by Goal Line Envi ronmental Technologies Addigesr Package extended aeration wastewater treatment plant by Smith& love additive A chemical substance incorporated into another substance to improve or additive mortality The total mortality caused by different factors affecting a pop- ulation for a given period of time including predation, fire, or catastrophes. add-on control device An air pollution control device such as carbon absorber or incinerator that reduces the pollution in an exhaust gas adenosine diphosphate(ADP) A compound involved in the mobilization of nergy in cellular metabolism. Energy is stored by adding a phosphate group ADP to produce ATP adenosine triphosphate(ATP) A high-energy phosphate compound that serves as the prime energy carrier in living organisms. Energy is released when ATP is converted to ADP and phosphate adenovirus A waterborne pathogen that causes upper respiratory infections and ADF See“ average daily flow(ADF)
activator A chemical added to a pesticide to increase its activity. Activator III Oil recovery product by Sybron Chemicals, Inc. active ingredient In any pesticide product, the component that kills, or otherwise controls, target pests. active life The period of operation of a facility that begins with initial receipt of a solid waste and ends at completion of closure activities. active portion Any area of a facility where treatment, storage, or disposal operations continue to be conducted. active solar heating A heating system that derives heat from the sun’s rays and incorporates active devices such as pumps or blowers to move heat from the point of collection to the point of storage or use. Activol™ Wastewater grease emulsifier by Probiotic Solutions. Acumem Reverse osmosis product formerly offered by USFilter. Acumer® Water treatment polymers by Rohm and Haas, Co. acute exposure A single exposure to a toxic substance, usually lasting no longer than a day, which results in severe biological harm or death. acute toxicity A poisonous effect produced by a single short-term exposure which results in severe biological harm or death. Acutec Gas detection system by USFilter/Wallace & Tiernan. ACWA American Clean Water Association. ACWM (1) Asbestos-containing waste material. (2) See “asbestos-containing waste materials (ACUM).” AD Dry blending and dilution system by Komax Systems, Inc. ADA American Desalting Association. Formerly “NWSIA.” ADAM Acryloyl ethyl dimethyl amine. adaptation Changes in an organism’s structure or habits which help it adjust to its surroundings. Adcat™ Oxidation catalyst systems for air pollution control by Goal Line Environmental Technologies. Addigest® Package extended aeration wastewater treatment plant by Smith & Loveless, Inc. additive A chemical substance incorporated into another substance to improve or preserve its quality. additive mortality The total mortality caused by different factors affecting a population for a given period of time including predation, fire, or catastrophes. add-on control device An air pollution control device such as carbon absorber or incinerator that reduces the pollution in an exhaust gas. adenosine diphosphate (ADP) A compound involved in the mobilization of energy in cellular metabolism. Energy is stored by adding a phosphate group to ADP to produce ATP. adenosine triphosphate (ATP) A high-energy phosphate compound that serves as the prime energy carrier in living organisms. Energy is released when ATP is converted to ADP and phosphate. adenovirus A waterborne pathogen that causes upper respiratory infections and gastroenteritis. ADF See “average daily flow (ADF)
adhesion The force of molecular attraction between unlike molecules ADI Acceptable daily intake adiabatic lapse rate The constant rate at which temperatures decrease as altitude increases. In a dry atmosphere the dry adiabatic la DALR)is imately -100C/100 m rise adit A horizontal passageway into a mine to provide access or drainage AdjustAir Adjustable coarse bubble air diffuser by USFilter/Diffused Air Prod ucts Group. Adjust-O-Pitch Mixing propellers with adjustable pitch blades by Walker Process administrative order An EPA-issued order directing an individual, business, or other entity to take corrective action or refrain from an activity. admixture (1)A material or substance added in mixing.(2)A substance other an cement, aggregate, or water that is mixed with concrete Ad-Ox Polishing scrubber for odor abatement by Purafil, Inc ADP See"adenosine diphosphate(ADP) Adpec Horizontal vacuum filter by Komline-Sanderson Engineering Corp ADR (1) Accidental rectal discharge. (2) Alternative dispute resolution. ADROWPU Water purification unit by Zenon Environmental, Inc AdsepM Chromatographic process for separating organic and inorganic com- pounds by USFilter/Rockford ol system by CSM Wo adsorbable organic halides(Aox) The gross measurement of all chlorinated adsorbate A material adsorbed on the surface of another solid where it is bound by chemical or physical force uid to the adsorption The process of transferring a substance from a liquid to the surface of Adsorption Clarifier Upflow buoyant media flocculator/clarifier by USFil- ter/Microfloc adulterants Chemical impurities or substances that by law do not belong in a food or pesticide adulterated (1)Any de whose strength or purity falls below the quality stated on its label. (2)A food, feed, or product that contains illegal pesticide residues Advance Chlorine gas feeder systems by Capital Controls Co Advanced Fluidized CompostingTM A combined biological and chemical sludge treatment process by USFilter/Industrial Wastewater Systems advanced oxidation process(AOP) A process using a combination of disinfec- tants such as ozone and hydrogen peroxide to oxidize toxic organic compounds to nontoxic form advanced secondary treatment Secondary wastewater treatment with enhanced solids separation advanced treatment plant(ATP) A treatment facility using processes that pro- vide treatment to levels greater than that of a conventional plant. advanced wastewater treatment(AWr) Treatment processes designed to remove pollutants such as phosphorus, nitrogen, and a high percentage of suspended
adhesion The force of molecular attraction between unlike molecules. ADI Acceptable daily intake. adiabatic lapse rate The constant rate at which temperatures decrease as altitude increases. In a dry atmosphere the dry adiabatic lapse rate (DALR) is approximately –1.00°C/100 m rise. adit A horizontal passageway into a mine to provide access or drainage. AdjustAir® Adjustable coarse bubble air diffuser by USFilter/Diffused Air Products Group. Adjust-O-Pitch Mixing propellers with adjustable pitch blades by Walker Process Equipment. administrative order An EPA-issued order directing an individual, business, or other entity to take corrective action or refrain from an activity. admixture (1) A material or substance added in mixing. (2) A substance other than cement, aggregate, or water that is mixed with concrete. Ad-Ox Polishing scrubber for odor abatement by Purafil, Inc. ADP See “adenosine diphosphate (ADP).” Adpec Horizontal vacuum filter by Komline-Sanderson Engineering Corp. ADR (1) Accidental rectal discharge. (2) Alternative dispute resolution. ADROWPU® Water purification unit by Zenon Environmental, Inc. Adsep™ Chromatographic process for separating organic and inorganic compounds by USFilter/Rockford. Adsolv Activated carbon VOC control system by CSM Worldwide/RaySolv. adsorbable organic halides (AOX) The gross measurement of all chlorinated organic compounds in an effluent. adsorbate A material adsorbed on the surface of another. adsorbent A material used to adsorb substances to its surface. adsorption The process of transferring a substance from a liquid to the surface of a solid where it is bound by chemical or physical forces. Adsorption Clarifier™ Upflow buoyant media flocculator/clarifier by USFilter/Microfloc. adulterants Chemical impurities or substances that by law do not belong in a food or pesticide. adulterated (1) Any pesticide whose strength or purity falls below the quality stated on its label. (2) A food, feed, or product that contains illegal pesticide residues. Advance® Chlorine gas feeder systems by Capital Controls Co. Advanced Fluidized Composting™ A combined biological and chemical sludge treatment process by USFilter/Industrial Wastewater Systems. advanced oxidation process (AOP) A process using a combination of disinfectants such as ozone and hydrogen peroxide to oxidize toxic organic compounds to nontoxic form. advanced secondary treatment Secondary wastewater treatment with enhanced solids separation. advanced treatment plant (ATP) A treatment facility using processes that provide treatment to levels greater than that of a conventional plant. advanced wastewater treatment (AWT) Treatment processes designed to remove pollutants such as phosphorus, nitrogen, and a high percentage of suspended
solids which are not adequately removed by conventional secondary treatment processes. advection The transfer of heat by horizontal currents of air. Advent Package water treatment plant by Infilco Degremont, Inc. advisory A nonregulatory document that communicates risk information to those who may have to make risk management decisions AEM Acoustic emission monitoring aeolian deposit Soil deposited by the wind. Aeralatero Packaged iron and manganese removal system by USFilter/General aerated pile composting A composting method where municipal wastewater sol- ids are mixed with a bulking material and the mixture placed over a forced air ventilation system. aeration The addition of air or oxygen to water or wastewater, usually by mechan- ical means, to increase dissolved oxygen levels and maintain aerobic conditions. Aeration Engineering Resources Corp. Former name of Aercor product group of Aeration Panels Fine bubble membrane diffuser panel by Parkson Corp. aerator a device used to introduce air or oxygen into water or wastewater Aerators Inc. Former name of uSfilter/ Aerator Products Aercor Aeration and packing products by Sanitaire Corp Aer-Degritter Aerated grit removal system by USFilter/Headworks Products Aerflare Air diffuser by Walker Process Equipment. AergridM Floor grid aeration system by Aeration Technologies, Inc Aermar Fine pore aeration diffuser by Aeration Technologies, Inc Aero-Accelatore Circular, packaged activated sludge treatment plant by Infilco Degremont, Inc aeroallergen An allergen transported by air. An organism that requires free oxygen for respiration Condition characterized by the presence of free oxygen digestion Sludge stabilization process involving direct oxidation of bio- degradable matter and oxidation of microbial cellular material aerobic treatment Process by which microbes decompose complex organic com- pounds in the presence of oxygen and use the liberated energy for reproduction and growth Aeroburn Wastewater treatment plant by Walker Process Equipment Aerocleve Former manufacturer whose product line is now offered by Chemineer, Aeroductor Aerated grit removal system by Lakeside Equipment Corp Aero-Filter Rotary distributor by Lakeside Equipment Corp Aer-O-Flo Wastewater treatment equipment product line by Purestream, Inc aerogel A substance formed by the suspension of small bubbles of gas in a liquid Aero-Mar Tubular membrane diffuser by Aeration Research Company Aero-Modr Wastewater treatment product line by Waterlink/Aero-Mod Systems Aeropure Activated carbon vapor filtration system by American Norit Company, Inc
solids which are not adequately removed by conventional secondary treatment processes. advection The transfer of heat by horizontal currents of air. Advent® Package water treatment plant by Infilco Degremont, Inc. advisory A nonregulatory document that communicates risk information to those who may have to make risk management decisions. AEM Acoustic emission monitoring. aeolian deposit Soil deposited by the wind. Aeralater® Packaged iron and manganese removal system by USFilter/General Filter. aerated pile composting A composting method where municipal wastewater solids are mixed with a bulking material and the mixture placed over a forced air ventilation system. aeration The addition of air or oxygen to water or wastewater, usually by mechanical means, to increase dissolved oxygen levels and maintain aerobic conditions. Aeration Engineering Resources Corp. Former name of Aercor product group of Sanitaire Corp. Aeration Panel™ Fine bubble membrane diffuser panel by Parkson Corp. aerator A device used to introduce air or oxygen into water or wastewater. Aerators, Inc. Former name of USFilter/Aerator Products. Aercor Aeration and packing products by Sanitaire Corp. Aer-Degritter Aerated grit removal system by USFilter/Headworks Products. AerFlare Air diffuser by Walker Process Equipment. Aergrid™ Floor grid aeration system by Aeration Technologies, Inc. Aermax® Fine pore aeration diffuser by Aeration Technologies, Inc. Aero-Accelator® Circular, packaged activated sludge treatment plant by Infilco Degremont, Inc. aeroallergen An allergen transported by air. aerobe An organism that requires free oxygen for respiration. aerobic Condition characterized by the presence of free oxygen. aerobic digestion Sludge stabilization process involving direct oxidation of biodegradable matter and oxidation of microbial cellular material. aerobic treatment Process by which microbes decompose complex organic compounds in the presence of oxygen and use the liberated energy for reproduction and growth. Aeroburn Wastewater treatment plant by Walker Process Equipment. Aerocleve Former manufacturer whose product line is now offered by Chemineer, Inc. Aeroductor Aerated grit removal system by Lakeside Equipment Corp. Aero-Filter Rotary distributor by Lakeside Equipment Corp. Aer-O-Flo Wastewater treatment equipment product line by Purestream, Inc. aerogel A substance formed by the suspension of small bubbles of gas in a liquid or solid. Aero-Max Tubular membrane diffuser by Aeration Research Company. Aero-Mod® Wastewater treatment product line by Waterlink/Aero-Mod Systems. Aeropure Activated carbon vapor filtration system by American Norit Company, Inc
AeroScrub Flue gas scrubber by Aeropulse, Inc. Aerosep Multi-stage aerosol separation system by Imre, Inc aerosols A suspension of collodial particles in air or another ga Aero-Surf Air driven rotating biological contactor by USFilter/Envirex Aero-Terra-Aqua ATA Technologies, Inc. Aerotherm In-vessel composting system by Fairfield Service Co AerResearch Aeration diffuser product line by Aeration Research Company AershearM Coarse bubble diffuser by Aeration Technologies, Inc AertubeTM Static tube aerators by Aeration Technologies, Inc AertecIM Air diffuser product line by Aeration Technologies, In AethalometerTM An aerosol black carbon monitor for measuring agricultural burning. diesel emissions and speciation of fine particles by Andersen Instruments, Inc AF SeriesTM Backwashable filter and carbon treatment units by Asahi America. AFCTM Advanced fluidized composting process by USFilterIndustrial Wastewater AFD Adjustable frequency drive. affected public The people who live and/or work near a hazardous waste site affluent stream A stream or river flowing into a larger river or lake afforestation The process of establishing a forest where one did not previously exist AFO Air fail open AFOS Animal feeding operations AFPA American Forest and Paper Association. Also called"AF&PA. AfterBlend Output booster for chemical feed system by USFilter/Stranco afterburner A device used to reduce air emissions by incinerating organic matter In a gas stream. aftercondenser A condenser installed as the last stage of an evaporator venting system to minimize atmospheric steam discharge aftergrowth The increase of bacterial density in treated distribution water caused by growth of bacteria released from pipewall biofilm and sediments. aftershock Any seismic tremor following a main earthquake event and originating at or near the same place. AFXM Ozone instrumentation products by IN USA, Inc. agar A gelatinous substance extracted from a red algae, commonly used as a medium for laboratory cultivation of bacteria agar plate A circular glass plate, containing agar or another nutrient-medium used to culture microorganisms AGC Association of general Contractors of america age tank A tank used to store a chemical solution of known concentration for feed a chemical feeder. Also called a day tank. agent Any substance, organism, or active force that produces an effect or change Agent Orange a dio ning toxic herbicide used as a defoliant during the Vietnam War gessive water Water having corrosive qua glomerate To gather fine particles into a larger mass
AeroScrub Flue gas scrubber by Aeropulse, Inc. Aerosep® Multi-stage aerosol separation system by Kimre, Inc. aerosols A suspension of collodial particles in air or another gas. Aero-Surf Air driven rotating biological contactor by USFilter/Envirex. Aero-Terra-Aqua ATA Technologies, Inc. Aerotherm In-vessel composting system by Fairfield Service Co. AerResearch Aeration diffuser product line by Aeration Research Company. Aershear™ Coarse bubble diffuser by Aeration Technologies, Inc. Aertec™ Air diffuser product line by Aeration Technologies, Inc. Aertube™ Static tube aerators by Aeration Technologies, Inc. Aethalometer™ An aerosol black carbon monitor for measuring agricultural burning, diesel emissions and speciation of fine particles by Andersen Instruments, Inc. AF Series™ Backwashable filter and carbon treatment units by Asahi America. AFC™ Advanced fluidized composting process by USFilter/Industrial Wastewater Systems. AFD Adjustable frequency drive. affected public The people who live and/or work near a hazardous waste site. affluent stream A stream or river flowing into a larger river or lake. afforestation The process of establishing a forest where one did not previously exist. AFO Air fail open. AFOs Animal feeding operations. AFPA American Forest and Paper Association. Also called “AF&PA.” AfterBlend Output booster for chemical feed system by USFilter/Stranco. afterburner A device used to reduce air emissions by incinerating organic matter in a gas stream. aftercondenser A condenser installed as the last stage of an evaporator venting system to minimize atmospheric steam discharge. aftergrowth The increase of bacterial density in treated distribution water caused by growth of bacteria released from pipewall biofilm and sediments. aftershock Any seismic tremor following a main earthquake event and originating at or near the same place. AFX™ Ozone instrumentation products by IN USA, Inc. agar A gelatinous substance extracted from a red algae, commonly used as a medium for laboratory cultivation of bacteria. agar plate A circular glass plate, containing agar or another nutrient-medium, used to culture microorganisms. AGC Association of General Contractors of America. age tank A tank used to store a chemical solution of known concentration for feed to a chemical feeder. Also called a day tank. agent Any substance, organism, or active force that produces an effect or change. Agent Orange A dioxin-containing toxic herbicide used as a defoliant during the Vietnam War. aggessive water Water having corrosive qualities. agglomerate To gather fine particles into a larger mass