Which of the following is obtained in the secondary tank in two stage – McqOptions

MCQOPTIONS

1.	Which of the following is obtained in the secondary tank in two stage sludge digester?
A.	Partially digested sludge
B.	Partially digested sludge and supernatant liquor
C.	Digested sludge and supernatant liquor
D.	supernatant liquor
Answer» D. supernatant liquor

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