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
input horsepower
The total power used in operating a pump and motor.
input horsepower [hp] = (brake horsepower [hp] × 100%) / (motor efficiency [%])
internal inflow
Nonsanitary or industrial wastewaters generated inside a domestic, commercial, or industrial facility and being discharged into the wastewater collection system. Examples are cooling tower waters, basement sump pump discharge waters, continuousflow drinking fountains, and defective or leaking plumbing fixtures.
back pressure
A pressure that can cause water to backflow into the water supply when a user's water system is at a higher pressure than the public water system.
solution
A liquid mixture of dissolved substances in which it is impossible to see all the separate parts.
nitrification stage (NYE-truh-fuh-KAY-shun)
A stage of decomposition that occurs in biological treatment processes when aerobic bacteria, using dissolved oxygen (DO), change nitrogen compounds (ammonia and organic nitrogen) into oxidized nitrogen (usually nitrate).
