Bardenpho™ Biological wastewater treatment process for removal of nitrogenand phosphorus by Baker Process.. BAT See “best available technology BAT.” Batch Master Package wastewater treat
Trang 1background concentration The general level of air pollutants in a region with alllocal sources of pollution ignored.
background contamination Contamination introduced accidentally into dilutionwaters, reagents, rinse water, or solvents which can be confused with constit-uents in the sample being analyzed
background level The concentration of pollutants in a definite area during a fixedperiod of time prior to starting up a source of emission undercontrol
background organic matter (BOM) Natural organic matter in a mixture withone or more specific organic chemicals
background radiation Nuclear radiation arising from within the human body andnormal surroundings
background soil pH The pH of the soil prior to the addition of substances thatalter the hydrogen ion concentration
backsiphonage A backflow of water of questionable quality that results from anegative pressure within water distribution system
backwash A high-rate reversal of flow for the purpose of cleaning or removingsolids from a filter bed or screening medium
backwash rate The flow rate used during filter backwash when the direction offlow through the filter is reversed for cleaning
BACM Best available control measures
BACT Best available control technology
bacteria Microbes that decompose and stabilize organic matter in wastewater
BADT Best available demonstrated technology
BAF (1) See “biologically active filter.” (2) Biologically activated foam
baffle An obstructing device or plate used to provide even distribution or to preventshort-circuiting or vortexing of flow entering a tank or vessel
baffle chamber In incinerator design, a chamber designed to promote the settling
of fly ash and coarse particulate matter by changing the direction and/orreducing the velocity of the gases produced by the combustion of the refuse
bailer A long pipe with a check valve at the lower end used to remove a slurry
or oil from the bottom or side of a well
Bakflo Barge mounted oil skimmer by Vikoma International Ltd
balefill A land disposal site where solid waste material is compacted and baledprior to disposal
baler A machine used to compress and bind solid recyclable materials such ascardboard or paper
ball valve A valve utilizing a rotating ball with a hole through it that allowsstraight-through flow in the open position
Trang 2ballast water Water used in a ship’s hold for stabilization often requiring treatment
Bamag Former name of Lurgi Bamag GmbH
banana-blade mixer High flow, low-shear mixer with rotating back-swept propeller
band application The spreading of pesticides, fertilizer, or other chemicals over,
or next to, each row of plants in a field
Bandit™ Raking machine by Brackett Geiger
bandscreen See “traveling water screen (TWS).”
bank sand Sand excavated from a natural deposit, usually not suitable for use in
a filter processing or grading
bar A unit of pressure equal to 0.9869 atmospheres, 106 dynes per square meter, 100,000 pascals, and 14.5 pounds per square inch
centi-bar screen A screening device using a parallel set of stationary bars typicallyspaced at 25 mm (1 inch) to 50 mm (2 inches)
Bardenpho™ Biological wastewater treatment process for removal of nitrogenand phosphorus by Baker Process
Barminutor® Combination bar screen and comminuting device by Yeomans cago Corp
Chi-barnacles A marine crustacean with a calcareous shell that attaches itself tosubmerged objects
Barnebey & Sutcliffe Former name of Waterlink/Barnebey Sutcliffe
barometer An instrument used to measure atmospheric pressure
barometric condenser A condenser in which vapor is condensed by direct contactwith water
barometric damper A pivoting plate used to regulate the amount of air entering
a duct or flue to maintain a constant draft within an incinerator
barometric leg (1) A condensate discharge line submerged below the liquid level
of an atmospheric tank (2) A gravity tailpipe from a vacuum barometriccondenser
barometric pressure Ambient or local pressure surrounding a gauge, evaporatorshell, vent pipe, etc
barrel (bbl) 42 U.S gallons
barriered landscape water renovation system (BLWRS) A wastewater ment and denitrification system where wastewater is applied to the top of amound of soil overlaying a water barrier and microbes oxidize soluble organics
treat-as the water percolates through the soil
barrier reef A long ridge of coral built up from the sea floor that runs parallel tothe mainland but is separated from it by a deep lagoon
Barry Rake Trash rake by Cross Machine, Inc
BART Best available retrofit technology
Bartlett-Snow™ Rotary calciner for soil reclamation by ABB Raymond
Trang 3basal application The application of pesticides on plant stems or tree trunks justabove the soil line.
base (1) A substance that can accept a proton (2) A substance that can react with
an acid to form a salt (3) An alkaline substance
baseline A sample used as a comparative reference point when conducting furthertests or calculations
basic water requirement (BWR) The amount of water required by humans fordrinking, sanitation, bathing, and cooking needs to meet a minimum quality
of life, and generally considered to be 50 liters per day per person
basicity factor Factor used to determine neutralization capabilities of alkalinereagents used to treat acidic wastes
basket centrifuge Batch-type centrifuge where sludge is introduced into a cally mounted spinning basket and separation occurs as centrifugal force drivesthe solids to the wall of the basket
verti-basophil A cell or substance easily stained by basic dyes Also spelled “basophile.”
Basys Biolfilter Modular air pollution control filter by Basys Technologies
BAT See “best available technology (BAT).”
Batch Master Package wastewater treatment system by USFilter/Industrial water Systems
Waste-batch process A noncontinuous treatment process in which a discrete quantity orbatch of liquid is treated or produced at one time
batch reactor A reactor where the contents are completely mixed and flow isneither entering nor leaving the reactor vessel
Batch-Master Bottom discharge basket centrifuge by Baker Process/Ketema
Batch-Miser Horizontal plate filter by Baker Process/Ketema
Batch-O-Matic Bottom discharge basket centrifuge by Baker Process/Ketema
BATEA Best available technology economically achievable and available
bathyal zone The ecological zone of the ocean above the abyssal zone, generallybetween 200 and 3500 meters
BATNEEC Best available technology not entailing excessive cost
battery limit The boundary limits of equipment or a process unit that definesinterconnecting points for electrical piping or wiring
Bauer® Screening equipment product line acquired by Andritz-Ruthner, Inc
Baumé Designation of hydrometer scale used to indicate specific gravity
bauxite Ore containing alumina monohydrate or alumina trihydrate which is theprincipal raw material for alumina production
bbl See “barrel (bbl).”
BCC See “bioaccumulative chemicals of concern (BCC).”
BCF (1) See “bioconcentration factor (BCF).” (2) Bead and crevice free
BCL Screen Back cleaned bar screen by Waste-Tech, Inc
BCPCT Best conventional pollutant control technology
BCT Best control technology
BDAT See “best demonstrated available technology (BDAT).”
BDCT Best demonstrated control technology
BDOC See “biodegradable dissolved organic carbon (BDOC).”
Trang 4BDT Best demonstrated technology.
beachwell A shallow intake well making use of beach sand and structure as a filtermedium
Bead Mover™ Ion exchange resin and filter media loading pump by IX ServicesCo
Bead Thief™ Ion exchange resin core sampler by IX Services Co
Beaufort scale A numerical scale of wind force where a Beaufort force 0 wind iscalm and a force 12 wind indicates hurricane force with winds in excess of
120 km/hr (75 mph)
bed depth The depth of filter media or ion exchange resin contained in a vessel
bed load Sediment particles resting on or near the channel bottom that are pushed
or rolled along by the flow of water
bed volume (BV) The volume occupied by filter media in a filter, or resin in anion exchange device
bedrock Solid rock encountered below the mantle of loose rock and soil whichoccurs on the earth’s surface
Beggiatoa Filamentous microbe, commonly associated with sludge bulking, thatresults from low dissolved oxygen levels and/or high sulfide levels
BEI See “biological exposure indexes (BEI).”
BEJ Best engineering judgement
Bekomat ® Micro-processor-driven condensate trap by BEKO Condensate tems Corp
Sys-Bekosplit Separation process for condensate emulsions by BEKO CondensateSystems Corp
Bekox Former name of USFilter/Bekox
Belclene® Scale control additive by BioLab, Inc
Belcor Organic corrosion control by BioLab, Inc
Belgard® Antiscalant for seawater evaporators by BioLab, Inc
Belite® Antifoaming agent by BioLab, Inc
Bellacide Algaecide by BioLab, Inc
BelloZon Chlorine dioxide generator by ProMinent Fluid Controls, Inc
Beloit-Passavant Company acquired by USFilter/Zimpro
Belspere® Chemical dispersant by BioLab, Inc
belt conveyor A device used to transport material, consisting of an endless beltthat revolves around head and tail pulleys
belt filter press See “belt press.”
belt press A dewatering device utilizing two fabric belts revolving over a series
of rollers to squeeze water from the sludge
belt thickener Mechanical sludge processing device that uses a revolving zontal filter belt to pre-thicken sludge prior to dewatering and/or disposal
hori-bench test A small scale test or study used to determine whether a technology issuitable for a particular application
beneficial organism A pollinating insect, pest predator, parasite, pathogen, orother biological control agent which functions naturally or as part of anintegrated pest management program to control another pest
Trang 5benthal oxygen demand The oxygen demand exerted by microbes and otherorganisms living on, or in close association with, the organic mud and sludgedeposits on the bottom of a river or stream.
benthic Relating to the bottom environment of a water body
benthos Microbes and other organisms living on or in close association with thebottom of a water body
BentoLiner™ Clay composite liner by SLT North America, Inc
Bentomat™ Geotextile-bentonite liner by Colloid Environmental TechnologiesCo
bentonite Colloidal clay-like mineral that can be used as a coagulant aid in watertreatment systems Sometimes used as the earth component or soil amendmentfor construction of a pond or landfill liner because of its low permeability
benzene A colorless, flammable liquid with carcinogenic properties produced fromcoal tar and used as a solvent Benzene is an aromatic hydrocarbon charac-terized by its six-sided ring structure with the chemical formula C6H6
Bepex Former name of Hosokawa Bepex Corp
berm A horizontal, earthen ridge or bank
Bernoulli’s Equation Energy equation commonly used to calculate head pressure,and considers velocity head, static head, and elevation
beryllium An airborne metal hazardous to human health when inhaled that may
be discharged by machine shops, ceramic and propellant plants, and foundries
best available technology (BAT) The best technology, treatment techniques, orother means available after considering field, rather than solely laboratoryconditions
best demonstrated available technology (BDAT) A technology demonstrated infull-scale commercial operation and shown to have statistically better perfor-mance than other technologies
best management practice (BMP) The schedules of activities, methods, sures, and other accepted industry management practices to prevent pollution
mea-of waters and facilitate compliance with applicable regulations
Beta NOx 2000™ NOx oxidation/reduction unit by Duall Division, Met-Pro Corp
beta particles Electrons emitted by a radioactive nucleus
beta radiation A stream of beta particles released during radioactive decay
Betz Laboratories Former name of BetzDearborn, Inc
BevMAX™ Reverse osmosis system for beverage industry applications by USFilter
BFI® Trademark of Browning-Ferris Industries, Inc
BFR See “Ballasted Floc Reactor™ (BFR).”
B-Gon™ Mist eliminator by Kimre Inc
BGS2 Sludge dryer/pelletizer formerly offered by Wheelabrator Water gies, Inc
Technolo-BHN Probiotic Lagoon sludge oxidation product line by Bio Huma Netics, Inc
B-horizon The intermediate soil layer, usually having a high clay content, whereminerals and other particles washed down from the A-horizon accumulate
bhp Brake horsepower The power developed by an engine as measured by adynamometer applied to the shaft or flywheel
Trang 6Bibbigard Torque limitor by Brunel Corp.
Bibo Dewatering and drainage pumps by ITT Flygt Corp
bicarbonate A chemical compound containing an HCO3 group
bicarbonate alkalinity Water alkalinity caused by bicarbonate ions
bicarbonate hardness Water hardness caused by calcium bicarbonate and nesium bicarbonate
mag-BI-CHEM Surfactant degradation product by Sybron Chemicals, BiochemicalDivision
Bi-Chem® Selectively adapted bacterial cultures for wastewater treatment bySybron Chemicals, Inc
BIF See “boilers and industrial furnaces (BIF).”
BIF® Product group of BIF
biflow filter Granular media filter characterized by water flow from both top andbottom to a collector located in the center of the filter bed
Big Dipper® Grease removal unit by Thermaco, Inc
bilharzia Waterborne disease also known as “schistosomiasis.”
binary fission Asexual reproduction in some microbes where the parent organismsplits into two independent organisms
Bio Disk-10 Biological deodorizer by Neutraman, Inc
Bio Dredge A lagoon sludge oxidation process by Unisol
Bio Genesis™ Microbial formulation to reduce wastewater odors by Bio HumaNetics, Inc
Bio Gro Bio Gro Division of Wheelabrator Water Technologies, Inc
Bio Jet-7 Organic solution of seven strains of live, non-toxic bacteria by Jet, Inc
Bio Max™ Floating piping system by Environmental Dynamics Inc
Bio*Fix® Alkaline stabilization process for biosolids by Wheelabrator Water nologies, Inc
Tech-Bio*Lime® Agricultural liming agent by Wheelabrator Water Technologies, Inc
Bio/Scent™ Liquid odor neutralizer by Hinsilblon Laboratories
BioAccelerator™ Groundwater treatment unit by Biotrol
bioaccumulants Substances that increase in concentration in living organisms asthey take in contaminated air, water, or food because the substances are veryslowly metabolized or excreted See also “biological magnification.”
bioaccumulation The process by which living organisms absorb and retain icals or elements from their environment, especially from their food
chem-bioaccumulative A characteristic of a chemical whose rate of intake into a livingorganism is greater than its rate of excretion or metabolism
bioaccumulative chemicals of concern (BCC) Chemicals including mercury,dioxin, chlordane, DDT, and PCBs which accumulate in the environment andrepresent potential risks to human health, aquatic life, and wildlife
Bio-Activation Combination activated sludge and trickling filter wastewater ment system by Amwell, Inc
treat-bioassay An analytical method that uses living organisms to measure the effect
of a substance, factor, or condition on the environment
bioaugmentation A method of cleaning up pollution by inoculating a site withspecific contaminant-targeted microbes in high density
Trang 7Biobed Wastewater treatment plant by Biothane Corp.
biobrick A kiln-dried building brick with an organic component provided bymunicipal wastewater solids
BioCam Wastewater treatment system utilizing conditioned anaerobic gens by Parkson Corp
methano-Biocarb™ Activated carbon by USFilter/Westates
Biocarbone® Biological wastewater treatment process using immersed fixed bedfilter by USFilter/Krüger
Biocel Modular biofiltration system for VOC reduction by Envirogen
biochemical oxidation Oxidative reactions brought about by biological activitywhich result in chemical combination of oxygen with organic matter
biochemical oxygen demand (BOD) A standard measure of wastewater strengththat quantifies the oxygen consumed in a stated period of time; usually 5 daysand at 20°C
Biocidal™ Sodium hypochlorite system by Scienco/FAST Systems
biocide A chemical used to inhibit or control the population of troublesome microbes
Bio-Clarifier Secondary clarifier with rotating sludge scoop for use with packagerotating biological contactor by USFilter/Envirex
Bioclean Reverse osmosis membrane cleaner by BetzDearborn-Argo District
Bioclere™ Packaged wastewater treatment plants by Ekofinn Bioclere
bioconcentration The net increase in concentration of a substance in plants andanimals above what is found in the natural surroundings
bioconcentration factor (BCF) The accumulation of chemicals that live in taminated environments equal to the quotient of the concentration of a sub-stance in aquatic organisms divided by the concentration in the water duringthe same time period
con-Biocontact® Biological aerated filter by Ekokan
biocontactor A unit process such as an aeration basin, trickling filter, RBC, ordigester where microbes degrade/transform organic matter
bioconversion The conversion of organic waste products into an energy resourcethrough the action of microbes
biocriteria Quantitative and narrative goals for the aquatic community used withinwater programs
Biocube™ Aerobic biofilter for airborne odors and VOCs by AMETEK RotronBiofiltration
Bio-D® Bioremediation nutrients by Medina Products Bioremediation Division
biodegradable Term used to describe organic matter which can undergo biologicaldecomposition
biodegradable dissolved organic carbon (BDOC) The portion of TOC that iseasily degraded by microbes
biodegradable organic matter (BOM) The portion of organic matter in waterthat can be degraded by microbes
BIOdek® Synthetic media for fixed film wastewater treatment reactors by wood Industries, Inc
Brent-BioDen™ Anaerobic biological nitrate removal process by Nitrate Removal nologies, LLC
Trang 8Tech-BioDenipho Biological phosphorus and nitrogen removal process by ter/Krüger.
USFil-Biodenit® Biological denitrification process using immersed fixed bed filter byUSFilter/Krüger
Bio-Denitro® Biological nitrogen removal process by USFilter/Krüger
biodiversity An environment where multiple organisms coexist
BioDoc® Rotary distributor for trickling filters by WesTech Engineering Inc
Bio-Drum Rotating drum containing biological filter media for wastewater ment by JDV Equipment Corp
treat-Bio-Energizer Lagoon sludge oxidation system by Probiotic Solutions
biofeasibility A bioremediation feasibility study done to determine the bility and potential success of a bioremediation technique or procedure for agiven site
applica-biofilm An accumulation of microbial growth
BiofiltAIR™ Biological air filter by Biorem Technologies, Inc
biofilter See “biological filter.”
BioFlex® Moving aeration chains for wastewater treatment systems by ParksonCorp
Bioflush Trash rake by E Beaudrey & Co
Biofor™ Biological fixed film wastewater treatment system by Infilco Degremont,Inc
biofoul Presence and growth of organic matter in a water system
BioFuser® Oxygen transfer and mixing units for wastewater treatment systems byParkson Corp
biogas The gases produced by the anaerobic decomposition of organic matter
biogenesis The theory that living organisms arise only from other living organisms
Bioglas Rigid, open cell foam silica biological oxidation media by the formerBioglas Corp
Bioglas Alpha Package fixed film wastewater treatment plant by the former glas Corp
Bio-Biograte Floor grating by Brentwood Industries, Inc
BioGuard ACS™ Biofouling inhibitor for reverse osmosis systems by sional Water Technologies, Inc
Profes-BioGuard® Influent cleaning system by Parkson Corp
BioGuide® Process monitoring and control technology by BioChem Technology,Inc
Bioken Former name of Filter Products
biokinetics The branch of science that pertains to the study of living organisms
Biolac® Extended aeration waste treatment process by Parkson Corp
Biolift™ Waste activated sludge thickening system by Baker Process
Biologic™ Nutrient supplement for wastewater treatment facilities by SciCorpSystems, Inc
biological exposure indexes (BEI) Guidelines used for assessing the hazardposed to healthy workers by chemical substances present in the body
biological filter A bed of sand, stone, or other media through which wastewaterflows that depends on biological action for its effectiveness
Trang 9biological magnification Refers to the process whereby certain substances such
as pesticides or heavy metals move up the food chain, work their way intorivers or lakes, and are eaten by aquatic organisms such as fish, which in turnare eaten by large birds, animals, or humans
biological process The process by which the metabolic activities of bacteria andother microorganisms break down complex organic materials into simple, morestable substances
biological treatment A treatment technology that uses bacteria to consumeorganic waste
biologically active filter (BAF) A granular media filter, usually employing vated carbon or anthracite which relies on the growth of a biofilm to aid inthe degradation of organic matter and/or ammonia
acti-Bio-Lysis® Sludge reduction process by Kady International
biomass The mass of biological material contained in a system
biome A biological community or ecosystem characterized by a specific habitatand climate such as a tropical rain forest or a desert
biomedical waste Waste derived from the operation of hospital, laboratory, andhealth care facilities
Biomizer™ Continuously sequencing reactor process by Environmental DynamicsInc
Bio-Module Package wastewater treatment plant using rotating biological tors by USFilter/Envirex
contac-BioMonitor™ Automated on-line BOD analyzer by Anatel Corp
biomonitoring The use of living organisms to test water quality at a dischargesite or further downstream
Bio-Net® Rotating biological contactor by NSW Corp
BIONOx™ Submersible aerator/mixer by ABS Pumps, Inc
Bionutre Nutrient removal process by USFilter/Envirex
Bio-Nutri™ Nitrogen and phosphorus removal process by Smith & Loveless, Inc
Bio-Ox™ Bioreactor for biological treatment of wastewater by SRE, Inc
bio-oxidation See “biochemical oxidation.”
Bio-Pac Package trickling filter formerly offered by USFilter/Envirex
Bio-Pac SF#30 Trickling filter media by NSW Corp
Biopaq ® Upflow anaerobic sludge blanket process used for treatment of strength wastes by CBI Walker, Inc., (U.S licensee), Biwater (U.K licensee),and Paques B.V (licensor)
high-BioPasteur® Biosolids pasteurization system by USFilter/Krüger
biopile A remediation technique that involves the mounding of contaminated soil
in a lined and covered pile with air and amendments circulating via pumping
Bio-Pure Water reclamation treatment plant by AquaClear Technologies Corp
biopure water Water that is sterile, pyrogen free and has a total solids content ofless than 1 mg/L
Biopuric Technology to remove hydrogen sulfide from anaerobic digester biogas
by Biothane Corp
Bio-Reel™ Fixed film wastewater treatment system using coiled, corrugated ing by Schreiber Corp
Trang 10tub-bioremediation The use of the natural ability of microbes to use waste materials
in their metabolic processes and convert them into harmless endproducts
Bio-S® Bioremediation surfactant by Medina Products Bioremediation Division
Bioscan 2 Monitoring technology for microbial activity by BetzDearborn, Inc
Bioscrub™ Rotating biological contactor odor and VOC treatment system by CMSGroup, Inc
Bioscrubbers™ Biological-based system for removal of odors by WRc ProcessEngineering
Biosep® Membrane water/wastewater treatment process by USFilter/Krüger(North America) and OTV
Bio-Separator Floating flow diversion baffle for lagoons by ThermaFab, Inc
bioslurping An in situ remediation technique that involves extraction of both vaporand liquid from the subsurface, also known as “dual-phase extraction.”
Bio-Sock Fabric sock used to introduce bacterial cultures into a flow by SybronChemicals, Inc
Biosock™ Biological culture application system by Sybron Chemicals, Inc
biosolids Solid organic matter recovered from municipal wastewater treatment thatcan be beneficially used, especially as a fertilizer “Biosolids” are solids thathave been stabilized within the treatment process, whereas “sludge” has not
biosorption process See “contact stabilization process.”
Bio-Source™ Biocide by Avista Technologies
biosparging A groundwater remediation technology where compressed air isinjected into a contaminated aquifer
biosphere The mass of living organisms found in a thin belt at the earth’s surface
BioSpiral Rotating biological contactor formerly offered by Walker ProcessEquipment
Biostart™ Liquid microbial concentrate by Advanced Microbial Systems, Inc
biostat A substance that inhibits biological growth without destroying the biomass
biostimulation A method of cleaning up pollution using indigenous microbes at
a contaminated site and providing only fertilizers, nutrients, or special ical compounds that speed the growth of the indigenous microbial population
chem-Biostyr® Upflow mixed media reactor process for removal of nitrogen and pended solids by USFilter/Krüger (North America) and OTV
sus-Biostyrene® Floating filter media by USFilter/Krüger (North America) and OTV
Bio-Surf Rotating biological contactor process by USFilter/Envirex
biota All living organisms within a system
Biotac™ Bioremediation system that delivers bacteria to wet wells by ter/Davis Process
USFil-biotechnology Techniques that use living organisms or parts of organisms toproduce a variety of products to improve plants or animals or to developmicroorganisms to remove toxics from bodies of water, or act as pesticides
Biothane® Anaerobic wastewater treatment process by Biothane Corp
Bio-Tite® Biofiltration odor control system by Thermacon Enviro Systems, Inc
Bioton® Biological VOC and odor control system by Monsanto Enviro-ChemSystems, Inc
biotower See “biological filter.”
Trang 11Biotox Regenerative thermal oxidation process by Biothermica International, Inc.
biotransformation Conversion of a substance into other compounds by isms; includes biodegradation
organ-biotrickling filter Odor treatment system where air is scrubbed with recirculatingliquid flowing over high-porosity packing materials covered with a thin film
of sulfur-oxidizing microbes
bioturbation The net effect of the activity of benthic organisms at wastewatertreatment plant discharges which may aid in the dispersion of contaminantsand increase the exchange of oxygen and nutrients between the sediment andwater
bioventing An in situ groundwater remediation technology where air is introducedinto unsaturated soil to facilitate biodegradation of organic contaminants
BioWeb™ Synthetic media providing a growth site for wastewater biomass byUSFilter/Davco
Biox™ Package water treatment plant by Bioscience, Inc
Bioxide® Sewage odor control product by USFilter/Davis Process
Bioxide-AQ™ Odor and corrosion control product by USFilter/Davis Process
BIPM International Bureau of Weights and Measures
bipolar membrane A membrane composed of two distinct layers of oppositelycharged materials
bipolar membrane electrodialysis See “water splitting.”
Bird Machine Sludge dewatering equipment product line of Baker Process
Birm® Granular filter media for removal of iron and manganese by Clack Corp
bittern The bitter liquid remaining after the crystallization of salt from a brine.See also “mother liquor.”
Bitumastic® Coal tar coating products by Carboline Co
bituminous coal A coal high in carbonaceous matter that yields a considerableamount of volatile waste matter when burned
Blace Filter A precoat filter system by Blace Filtronics, Inc
Black Clawson Former name of Thermal Black Clawson
black liquor Strong organic waste generated during kraft pulping process
black lung disease Common name for the lung disease “anthracosis” caused byprolonged inhalation of coal dust, which results in fibrosis, or scarring of lungtissue
black sand Discoloration of filter sand resulting from manganese deposits
black water (1) A condition in drinking water that results from the presence ofexcess oxidized manganese (2) Water that contains animal, human, or foodwaste
blank A quality control sample representing a matrix and containing all the stituents except the analyte
con-blanketing gas Nitrogen or other inert gas used in a “gas blanket.”
blast furnace Furnace used in iron-making process in which hot blast air flowsupward through the raw materials and exits at the furnace top
Blastocystis An intestinal protozoan parasite transmitted by contaminate food orwater
Blaw-Knox Former name of Buffalo Technologies, Inc
Trang 12bleach An oxidizing compound usually containing chlorine combined with cium or sodium.
cal-bleed To draw accumulated liquid or gas from a line or container
Blendmaster Sludge mixer by McLanahan Corp
Blendrex™ Motionless mixer by LCI Corp
blind flange A flanged plate or blind used to close the end of a pipeline
blinding The reduction or cessation of flow through a filter resulting from solidsrestricting the filter openings
Blizzard Adsorption System Polymeric adsorbent technology for VOC abatement
by On-Demand Environmental Systems, Inc
BLM U.S Department of Interior’s Bureau of Land Management
Block & Hong process Biological phosphorus removal process by ter/Krüger
USFil-blood worm The larval stage of the midge fly
bloodborne pathogen Pathogenic microbes present in human blood and otherpotentially infectious materials which can cause disease in humans
bloom See “algal bloom.”
blowback Filtrate blown out through the filter medium on a rotary vacuum filter
by the air introduced to move the filter cake away from the cloth
blowdown A controlled discharge from a recirculating system designed to prevent
a buildup of some material
blower Air conveying equipment that generates pressures up to 103 kPa (15 psi)commonly used for wastewater aeration systems
BLS™ Sludge reduction process by Kady International
blue baby syndrome See “methemoglobinemia.”
blue vitriol Common name for copper sulfate used to control algae
blue-green algae A group of aquatic organisms having a blue pigment in addition
to a green-colored colorophyll, and often the cause of nuisance conditions inwater bodies
BLWRS See “barriered landscape water renovation system (BLWRS).”
BMP See “best management practice (BMP).”
BMR Baseline monitoring report
BNR Biological nutrient removal
Boa-Boom Oil spill containment booms by Environetics, Inc
Boat® Boat-shaped intrachannel clarifier by United Industries, Inc
BOD See “biochemical oxygen demand (BOD).”
BOD 5 Five-day carbonaceous or nitrification-inhibited BOD See also ical oxygen demand (BOD).”
“biochem-BOD-Seed™ Seed microbes for BOD testing by Sybron Chemicals, Inc
BODu See “ultimate BOD (BODU).”
body burden The total radiation or toxic material present in the body at a point
Trang 13BogenFilter™ Belt filter press by Klein America, Inc.
boil out An evaporator cleaning process where wash water is boiled in an rator to remove scale deposits
evapo-boiler A vessel in which water is continually vaporized into steam by the cation of heat
appli-boiler feedwater Water which, in the best practice, is softened and/or ized, heated to nearly boiler temperature, and deaerated before being pumpedinto a steam boiler
demineral-Boilermate® Packed column deaerator by Cleaver-Brooks
boilers and industrial furnaces (BIF) A category of thermal treatment tions, also including cement and aggregate kilns, asphalt, and smelting fur-naces, whose combustion processes and air emissions are regulated
opera-boiling point The temperature at which a liquid’s vapor pressure equals the sure acting on the liquid
pres-boiling point elevation (BPE) The difference between the boiling point of a tion and the boiling point of pure water at the same pressure
solu-BOM See “biodegradable organic matter (BOM)” and “background organic matter(BOM).”
bomb calorimeter An instrument used to determine the heat content of sludge orother material
bone char A carbon-based adsorbent made by carbonizing animal bones
BonoZon Ozone generator by ProMinent Fluid Controls, Inc
BOO Build, own, operate
BOOM Build-own-operate-maintain
boom A floating barrier used to contain oil on a body of water
booster pump A pump used to raise the pressure of the fluid on its discharge side
BOOT Build-own-operate-transfer
Boothwall™ Dust collector cartridge filters by Dustex Corp
BoR U.S Bureau of Reclamation Also called “BuRec.”
bore hole A man-made hole in a geological formation
Bosker™ Trash rack cleaner by Brackett Green
BOT Build, operate, transfer
botanical pesticide A pesticide whose active ingredient is a plant-produced ical such as nicotine or strychnine
chem-bottom ash The noncombustible particles that fall to the bottom of a boiler furnace
bottoming cycle Cogeneration system where thermal heat is produced by theprocess and by-product electricity is then generated
botulism A severe form of food poisoning usually associated with development
of a toxin produced by bacteria such as bacillus in improperly preserved orprepared food
bound water Water held on the surface or interior of colloidal particles
Bouyoucos A laboratory test procedure employing hydrometers to determine thefine particle size distribution in a slurry
Bowser-Briggs Former manufacturer of oil/water separation equipment
Boyle’s Law The volume of a gas varies inversely with its pressure at constanttemperature
Trang 14Boythorp Glass coated steel tanks by Klargestor.
BPE See “boiling point elevation (BPE).”
BPEO Best practical environmental option
BPR (1) Biological phosphorous removal (2) Boiling point rise
Brackett Green Former name of Brackett Geiger
brackish water Water containing low concentration of soluble salts, usuallybetween 1000 and 10,000 mg/L
branch sewer A sewer that receives wastewater from a small area and dischargesinto a main sewer serving more than one area
Brandol® Cylindrical fine bubble diffusers by USFilter/Schumacher Filters
brass A copper alloy containing up to 40% zinc
braze To thermally bond metallic parts with a cuprous alloy
break tank A storage tank at atmospheric pressure from which feed water is drawnprior to further treatment or use
breakpoint chlorination Addition of chlorine to a water or wastewater until thechlorine demand has been satisfied Further addition will result in a chlorineresidual so that disinfection can be assured
breakthrough That point in the granular media filter cycle when the filtrate bidity begins to increase because the filter bed is full and no longer able toretain solids
tur-breakwater An offshore barrier, often connected to shore, which breaks the force
of waves and provides shelter from wave action
Breeze™ Compact air stripping unit by Aeromix Systems, Inc
BRI See “building-related illness (BRI).”
brine Water saturated with, or containing a high concentration of, salts, usually
in excess of 36,000 mg/L
brine concentrator Term used to describe a vertical tube falling film evaporatoremploying special scale control techniques to maximize concentration of dis-solved solids
brine heater The heat input section of a multistage flash evaporator where water is heated to the process’ top temperature
feed-brine mud Waste material, often associated with well-drilling or mining, posed of mineral salts or other inorganic compounds
com-brine staging See “reject staging.”
British Thermal Unit (Btu) The quantity of heat required to raise the temperature
of one pound of water by 1°F
Brix scale A scale used in a hydrometer for measuring the concentration or density
of sugar in solution
broadcast application The spreading of pesticides over an entire area
broad-crested weir A weir having a substantial crest width in the direction allel to the direction of water flowing over it
par-broke Paper waste generated prior to completion of the papermaking process
bromate The highest oxidation state of the bromide ion which can be formedduring the ozonation of waters containing bromide
BromiCide® Microbiocide by BioLab Water Additives
Trang 15bromide An inorganic ion found in surface water and groundwater that, whenoxidized by chlorine or ozone, can result in the formation of bromide-substi-tuted disinfection byproducts.
bromine A halogen element used as a water disinfectant in combination withchlorine as a chlorine-bromide mixture Chemical symbol is Br
bronze A copper-tin alloy, or any other copper alloy, that does not contain zinc
or nickel as the principal alloying element
brown coal A common term for lignite
brownfield An inactive site or property being put back into productive economicuse after the relevant environmental agencies agree contaminants present at theproperty no longer pose an unacceptable risk to human health or the environment
Brownian motion Erratic movement of colloidal particles that results from theimpact of molecules and ions dissolved in the solution
Brownie Buster Organic solids agitator/separator by Enviro-Care Co
Bruner Product line by Culligan International
Bruner-Matic® Water treatment control center by Culligan International Corp
brush aerator Mechanical aeration device most frequently used in oxidation ditchwastewater treatment plants, consisting of a horizontal shaft with protrudingpaddles, that is rapidly rotated at the water surface Also called a “rotor.”
BS&W Bottom sediments and water
BTEX Benzene, toluene, ethylbenzene, and xylene
Btu See “British Thermal Unit (Btu).”
BTU-Plus® Filter media that incinerates to inert ash by Alar Engineering Corp
BTX Benzene, toluene, and xylene
bubble point The pressure at which air first passes through a wet membrane; thepath being the channel of greatest pore size
bubbler system Common terminology for pneumatic-type differential levelcontroller
bubonic plague An acute infectious disease usually transmitted from infectedanimals to humans by the bite of a rat flea
buchner funnel A laboratory funnel with a perforated bottom that utilizes a posable filter paper to evaluate wastewater and sludge dewaterability
dis-bucket elevator A conveying device consisting of a head and foot assembly thatsupports and drives an endless chain or belt to which buckets are attached
Budd Nonmetallic chain product line by Polychem Corp
buffer A substance that stabilizes the pH value of solutions
buffer strips Strips of grass or other erosion-resisting vegetation between or belowcultivated strips or fields
buffered The ability to resist changes in pH
buffering capacity The capacity of a solution to resist a change in composition,especially changes in pH
Buflovak® Evaporator and crystallizer product line by Buffalo Technologies, Inc
building-related illness (BRI) Condition in which at least 20% of a building’soccupants display symptoms of illness for more than 2 weeks and the cause
of the illness can be traced to a specific building source
Trang 16bulk density The density/volume ratio for a solid including the voids contained
in the bulk material
bulkhead A partition of wood, rock, concrete, or steel used for protection fromwater, or to segregate sections of tanks or vessels
bulking sludge A poorly settling activated sludge that results from the nance of filamentous organisms
predomi-bulky waste Large items of waste materials, such as appliances, furniture, largeauto parts, trees, stumps
Bullseye™ Wastewater nutrient removal process by United Industries, Inc
buoyancy The tendency of a body to rise or float in a liquid
BuRec U.S Bureau of Reclamation Also called “BoR.”
burette A glass tube with fine gradations and bottom stopcock used to accuratelymeasure and dispense fluids
burning agents Additives that improve the combustibility of the materials towhich they are applied
burning rate The rate at which solid waste is incinerated or heat is released duringincineration
burnishing A surface finishing process in which surface irregularities are placed rather than removed
dis-bushing (1) A short threaded tube which screws into a pipe fitting to reduce itssize (2) The bearing surface for pin rotation when a chain revolves around asprocket
butterfly valve A valve equipped with a stem-operated disk that is rotated parallel
to the liquid flow when opened and perpendicular to the flow when closed
BV See “bed volume (BV).”
BVF® Anaerobic wastewater treatment system by ADI Systems, Inc
BWI British Drinking Water Inspectorate
BWR See “basic water requirement (BWR).”
BWRO Brackish water reverse osmosis
bypass A channel or pipe arranged to divert flow around a tank, treatment process,
or control device
byproduct A material or substance that is not a primary product of a process and
is not separately produced
C
C See “Celsius (C).”
C parvum See “Cryptosporidium.”
C × T The product of the “residual disinfection concentration” (C) in mg/L
deter-mined before or at the first customer, and the corresponding “disinfectantcontact time” (T) in minutes Also called “CT value.”
C × T 99.9 The CT value required for 99.9% inactivation of Giardia lamblia cysts.
c/c Center-to-center
Trang 17CA See “cellulose acetate (CA).”
CA membrane Cellulose acetate membrane
CA•RE™ Spent cartridge filter recovery program by USFilter Corp
CAA See “Clean Air Act (CAA).”
CAAA See “Clean Air Act Amendments (CAAA).”
CableTorq Circular thickener with automatic torque load response system byGL&V/Dorr-Oliver, Inc
CaCO 3 See “calcium carbonate.”
CAD Computer-aided design
cadmium (Cd) A heavy metal element that accumulates in the environment
CADRE® VOC destruction process by Vara International
CAF® Cavitation air flotation units by HydroCal, Inc
CAFE See “Corporate Average Fuel Economy Standard (CAFE).”
CAFOs Concentrated animal feeding operations
Cairox® Potassium permanganate by Carus Chemical Co., Inc
Cairox ZM® Zebra mussel control technology by Carus Chemical Co., Inc
caisson Watertight structure used for underwater work
cake Dewatered sludge with a solids concentration sufficient to allow handling as
a solid material
cake filtration Filtration classification for filters where solids are removed on theentering face of the granular media
CakePress Modular high pressure section of dewatering press by Parkson Corp
Cal Large calorie See “calorie.”
cal Small calorie See “calorie.”
calandria The heating element in an evaporator consisting of vertical tubes whichact as the heating surface
calcareous Composed of, or containing, calcium compounds, particularly calciumcarbonate
calcify To become stone-like or chalky due to deposition of calcium salts
calcine Ore, carbonate, mineral, or concentrate that has been roasted in an ing atmosphere to remove sulfur or carbon dioxide
oxidiz-calcined lime See “quicklime.”
calciner A device in which the moisture and organic matter in phosphate rock isreduced in a combustion chamber
calcining Exposure of an inorganic compound to a high temperature to alter itsform and drive off a substance that was originally part of the compound
Calciquest Liquid polyphosphate by Calciquest, Inc
calcium carbonate A white, chalky substance which is the principal hardness andscale-causing compound in water Chemical formula is CaCO3
calcium carbonate equivalent (mg/L as CaCO 3 ) A convenient unit of exchangefor expressing all ions in water by comparing them to calcium carbonate whichhas a molecular weight of 100 and an equivalent weight of 50; signifies thatthe concentration of a dissolved mineral is chemically equivalent to the statedconcentration of calcium carbonate
calcium hardness The portion of the total hardness attributed to calcium compounds
calcium hydroxide See “hydrated lime.”