E. Coli - The common abbreviation of Escherichia Coli.
eductor - A device utilizing a nozzle and throat, installed in a stream of water to create a partial vacuum to draw air or liquid into the stream; commonly used to draw regeneration chemicals into an ion exchange water
treatment system, such a softener or deionizer.
efficiency - The ratio of output per unit input or the effectiveness of performance of a system; in an ion exchange system, often
expressed as the amount of regenerant required to produce a unit of capacity,
such as the pounds of salt per kilograin of hardness removal.
effluent - The stream emerging from a unit, system or
process, such as the softened water from an ion exchange softener.
ejector - A device which used a high velocity jet to entrain a gas or liquid in a stream of air or liquid. (See eductor.)
electron - A fundamental particle found in the atom which carries a single negative charge.
erosion - The process in which material is worn away by a stream of air or liquid, often due to the presence of abrasive particles in the stream; a physical or mechanical wearing process rather than a chemical solution process.
Escherichia Coli - One of the members of the coliform groups of bacteria indicating fecal contamination. (See fecal, coliform.)
exhaustion - The state of an ion exchange material that is no longer capable of effective function due to the depletion of the initial
supply of exchangeable ions. (See ion exchange, endpoint.)
