What is the thickened concentration of anaerobically digested primary sludge from primary digestor?

What is the thickened concentration of anaerobically digested primary

1.	What is the thickened concentration of anaerobically digested primary sludge from primary digestor?
A.	1-3%
B.	5-7%
C.	10%
D.	12%
Answer» E.

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What is the thickened concentration of anaerobically digested primary sludge from primary digestor?

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