You know what it looks like… but what is it called?
TAKE THE QUIZ“activated sludge”
We have one entry that includes the term activated sludge.
activated sludge process
noun: a sewage treatment procedure in which the decomposition of the raw sewage is hastened by the addition to it of biologically active sewage sludge
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- Arachnophobia is the fear of what multi-legged creatures?
You can make only 12 words. Pick the best ones!
PLAYLove words? Need even more definitions?
Merriam-Webster unabridged