A surface-active substance that when added to water lowers surface tension and increases the “wetting” capabilities of the water. Reduced surface tension allows water to spread […]
Liquid removed from settled sludge. Supernatant commonly refers to the liquid between the sludge on the bottom and the water surface of a basin or container.
The addition of excess amounts of chlorine to a water supply to speed chemical reactions or insure disinfection with short contact time. The chlorine residual following […]
A specific acidic group which forms the exchange site active group in certain cation exchange resins and gives these resins their ion exchange capability.
A group of bacteria which are capable of reducing sulfates in water to hydrogen sulfide gas, thus producing obnoxious tastes and odors. These bacteria have no […]