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
rotor
The rotating part of a machine. The rotor is surrounded by the stationary (nonmoving) parts (stator) of the machine.
cone of depression
The depression, roughly conical in shape, produced in the water table by the pumping of water from a well. Also called the cone of influence. Also see circle of influence.
molecular weight
The molecular weight of a compound in grams per mole is the sum of the atomic weights of the elements in the compound. The molecular weight of sulfuric acid (H2SO4) in grams is 98.
mixed liquor suspended solids (MLSS)
The amount microorganisms, biodegradable material, and nonbiodegradable material in the bioreactor. Also called solids inventory.
variable costs
Costs that a utility must cover or pay that are associated with producing a product or service. These costs vary based on the amount of the product or service the utility produces. Also see fixed costs.
