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Useful Commercial & Industrial Terms


Alternate Terms

Definition and/or Use

Activated Carbon GAC, Carbon, Activated Coal, Charcoal,
Activacted Charcoal
A widely used water treatment medium commonly used for dechlorination, organics removal and other specialty processes. Base products include but not limited to bituminous coal, coconut and lignite.
Alkalinity Dealkalizer, Alkaline Water, M-Alkalinity, P-Alkalinity The quantitative capacity of water to neutralize an acid; that is, the measure of how much acid can be added to a liquid without causing a significant change in pH. Alkalinity is not the same as pH because water does not have to be strongly basic (high pH) to have high alkalinity. In the water industry, alkalinity is expressed in mg/L of equivalent calcium carbonate.
Anion Resin White stuff, SBA, Strong Base Anion, WBA, Weak Base Anion, Tannin Resin, Type 1 Anion, Type II Anion, Organic Scavenger Resin An ion with a negative charge. Anion Exchange is an ion exchange process in which anions in solution are exchanged for other anions from an ion exchanger.
Bed Resin Bed, Filter Bed, Softener Bed, Softner Bed The mass or volume of ion exchange resin or other media through which the water passes in the process of water treatment.
Brine Salt Solution, Saturated Brine A strong solutions of salt(s), usually sodium chloride and other salts too. Potassium or sodium chloride brine is used in the regeneration state of cation and or anion exchange water treatment equipment. Sodium chloride brine saturation in an ion exchange softening brine tank is about 26 percent NaCI by weight at 60 degrees F.
Brine Tank Trash Can, Salt Bale, Brine Keeper, Salt Tank, Brine Maker, Brine Holding Tank, Brine Measuring Tank A brine tank holds the brine solution used in conjunction with water treatment equipment. The brine is used to regenerate the resin.
Calcium Scale Calcium is one of the principal elements making up the earth's crust. Calcium compounds, when dissolved, make water hard. The presence of calcium in water is a factor contributing to the formation of scale and insoluble soap curds, which are a means of clearly identifying hard water.
Catalyst Catalytic A substance that changes the speed or yield of a chemical reaction without being consumed or chemically changed by the chemical reaction.
Catalyst Media   Those filter media which can cause certain reactions to occur in water treatment, such as activated carbon, calcite, manganese greensand, manganese oxides, and dissimilar metal alloys.
Cation Resin SAC, Strong Acid Cation, Softener Resin, WAC, Wek Acid Cation, Zeolite, Softener Beads, Softner Beads, Softner Resin An ion with a positive charge. Cation Exchange is an ion exchange process in which cations in solution are exchanged for other cations from an ion exchanger.
Decationize Decationized Water The exchange of cation for hydrogen ions by a strong acid cation exchanger operated in the hydrogen form.
Degasifier Degasify, Degassing, Decarbonator, Forced Draft Degasifier, VOC Tower, Air Stripper The removal of dissolved gasses such as carbon dioxide, methane, hydrogen sulfide, and oxygen by: 1) subjecting the water to a pressure below atmospheric pressure (vacuum degassing) or 2) passing large amounts of air thoroughly through the water at atmospheric pressure (air stripping)
Deionizer Demineralizer, Demin, DI The removal of all ionized minerals and salts (both organic and inorganic) from a solution by a two-phase ion exchange procedure. First, positively charged ions are removed by a cation exchange resin in exchange for a chemically equivalent amount of hydrogen ions. Second, negatively charged ions are removed by an anion exchange resin for a chemically equivalent amount of hydroxide ions. The hydrogen and hydroxide introduced in this process unite to from water molecules. This process is also called demineralization by ion exchange.
Desilicizer   An ion exchange process designed for reduction of silica from a water supply. Typically a strong base anion exchanger operated in the OH- form is used.
DI Exchange Tanks DI Bottles, SDI, Service DI, PE, Portable Exchange, PEDI, Exchange Bottles Tanks that are leased or rented to a facility lacking the means to regenerate the medium, usually ion exchange resin.
Effective Size Mesh Size, Average Size A measure of the diameter of particles in a media bed or resin bed. Effective size is that mesh size which will permit 10 percent of the bed's particles to pass and will retain that remaining 90 percent; in other words, that size for which 10 percent of the media grains or particles are smaller and 90 percent are larger
Feedwater Boiler Feed water, Makeup Water, Boiler Make up water The water to be treated that is fed in to a given water treatment system.
Flowrate GPM, Gallons Per Minute, M3/Hr, Feet per Second The quantity of water or regenerant which passes a given point in a specified unit of time often expressed in US gpm (orL/min). In filter, flow rate is usually measured in gpm/sq. ft of bed area. In ion exchangers, it is expressed in gpm/cu.ft of resin. Flow rate is a critical design parameter by which the effectiveness of the water treatment unit is measured.
Groundwater Well Water Water found beneath the surface of the ground. Groundwater is primarily water which has seeped down from the surface by migrating through the interstitial spaces in soils and geologic formation.
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