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2yankees2 2yankees2
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Posts: 308
5 years ago
What is the first step in treating raw sewage?
A) filtration of solids
B) removal of fine particles by settling
C) removal of grit by settling
D) removal of sludge
E) disinfection
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nhoclocnhocloc
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Posts: 185
5 years ago
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2yankees2 Author
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5 years ago
Thanks for your help!!
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Yesterday
Good timing, thanks!
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2 hours ago
Brilliant
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