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Current IssueOctober 24, 2014
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WC&P is proud to offer this comprehensive glossary to our readers and website visitors. This living document is intended to serve as an easy-to-use reference source for information on the POU/POE water treatment industry. 

 

Any suggestions or input that would further enhance or expand the glossary are strongly encouraged.

 

We would like to formally thank and credit such organizations as WQA, AWWA, WEF, Lenntech and other web glossary sources for providing some of the basis and background of this compendium.

Capacity

In a softener or deionizer it is the adsorption activity possessed in varying degree by ion exchange materials. This quality may be expressed as kilograins per cubic foot, gram-milliequivalents per gram, pound-equivalents per pound, gram-milliequivalents per milliliter, etc.. It can also refer to the ability of any media to take up a specific contaminant; that is expressed as time over gallons. When used as to flow rates, it is the maximum or minimum flow obtainable under given conditions of media, temperature, pressure, velocity, etc. For ion exchange water softeners, the capacity is expressed in grains of hardness removal between successive regenerations and is related to the pound of salt used in regeneration. For filters, the capacity may be expressed in the length of time or total gallons delivered between servicing.