Glossary Terms

The cation exchange cycle (H+ form) in which the cation medium is regenerated with acid and all cations in the water are removed by exchange with […]

A process in which particles of the same specific gravity may be graded according to size by backwashing or other relative upward flow of water, with […]

Referring to water or other fluids in motion.

The chemical combination of water into a substance.

A dry solid, largely calcium hypochlorite, used as a disinfecting agent; has excellent stability as long as kept dry.

A procedure for estimating the total number of live non-photosynthetic bacteria in water.

The same as “pressure drop”.

A measure of the pressure at a point in a water system, expressed in pounds per square inch (psi), or in the height of a column […]

Metallic elements with high atomic weights, e.g., mercury, chromium, cadmium, arsenic, and lead. They can damage living things at low concentrations and tend to accumulate in […]