Glossary of Water and Wastewater Terms
A B C D E F G H I J K L M N O P Q R S T U V W Y Z5 random terms from our glossary
algal bloom (al-gull)
Sudden, massive growths of algae, which can develop in lakes, resevoirs, and lagoons under the proper conditions.
variable frequency drive (VFD)
An electronic device that is used to vary the frequency of an electric current applied to a motor. While the motor is not running, it is first connected to a low-frequency source; then, the frequency is incresaed gradually until the motor and pump (or other driven machine) are operating at the desired speed. This allows operators to precisely control the rotational speed of the motor.
power rodder
A machine designed to remove roots, grease, and other materials from pipes. Also referred to as rodding machines.
acid rain
Precipitation that has been rendered (made) acidic by airborne pollutants.
fire point
The lowest temperature of a liquid at which a mixture of air and vapor from the liquid will continue to burn.
