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activated sludge

British  

noun

  1. a mass of aerated precipitated sewage added to untreated sewage to bring about purification by hastening decomposition by microorganisms

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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These plants can magnify antibiotic resistance by giving genes that confer the resistance the opportunity to spread among different types of bacteria in activated sludge, she said.

From Los Angeles Times • Apr. 10, 2023

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.