Glossary of Water and Wastewater Terms

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5 random terms from our glossary

Flume

An open conduit of wood, masonry, metal, or plastic constructed on a grade and sometimes elevated. Sometimes called an aqueduct or channel. Also see PARSHALL FLUME.

Information Collection Rule (ICR)

The Information Collection Rule (ICR) was promulgated on May 14, 1996 and approved by the Director of the Federal Register on June 18, 1996. It was to remain effective until December 31, 2000. The rule specified requirements for monitoring microbial contaminants and disinfection by-products (DBPs) by large public water systems (PWSs). It required large PWSs to conduct either bench- or pilot-scale testing of advanced treatment techniques. The data reported under the ICR were used by EPA to learn more about the occurrence of microbial contamination and disinfection by-products, the health risks posed, appropriate analytical methods, and effective forms of treatment. The ICR data form the scientific basis for EPA's development of the Enhanced Surface Water Treatment Rule and the Disinfectants and Disinfection By-Products (D/DBP) Rule.

Chemical Grouting

Sealing leaks in a pipeline or manhole structure by injecting a chemical grout. In pipelines, the chemicals are injected through a device called a packer. In operation, the packer is located at the leak point with the use of a television camera. Inflatable boots at either end of the packer isolate the leak point and the grouting chemicals are then forced into the leak under pressure. After allowing time for the grout to set, the packer is deflated and moved to the next location. Also called pressure grouting.

Pickle

An acid or chemical solution in which metal objects or workpieces are dipped to remove oxide scale or other adhering substances.

Kinetic Energy

Energy possessed by a moving body of matter, such as water, as a result of its motion.