Glossary Terms

May 3, 2017

up-flow softening

A pattern of water flow used in softeners in which the service water flows upward through the ion exchange bed; the media is restricted in movement, […]
May 3, 2017

up-flow brining

Is a means of forcing the brine solution upward through the cation exchanger for regenerating the resin. Where the softening flow is downward and the regenerating […]
May 3, 2017

up-flow

A pattern of water flow in which a solution (water or regenerant usually) enters at the bottom of the vessel or column and flows out at […]
May 3, 2017

uniformity coefficient

The measure of the variation in particle sizes of filter and ion exchange media. The uniformity coefficient is defined as the ratio of the sieve size […]
May 3, 2017

unaccounted-for water

A term used in municipal water systems to describe the difference between the water produced and that metered and sold. It usually includes losses due to […]
May 3, 2017

ultraviolet dosage

The amount of disinfectant ultraviolet rays delivered to the organisms in the water being disinfected. Dosage is a combination of UV intensity times the contact time […]
May 3, 2017

ultraviolet demand

The amount of ultraviolet rays required to inactivate certain microorganisms.
May 3, 2017

ultraviolet chamber

The area where the water is irradiated with ultraviolet rays.
May 3, 2017

ultraviolet (UV)

Pertaining to ultraviolet light.