Which one of the following processes in sewage treatment requires bacterial metabolism?
A) chlorination
B) primary treatment
C) sedimentation
D) removal of BOD
E) None of the answers is correct.
Correct Answer:
Verified
Q16: The guano deposited by seabirds is used
Q17: Adding untreated sewage to a freshwater lake
Q18: NH3 → No2-
A) takes place under anaerobic
Q19: All of the following organisms are involved
Q20: Which of the following is NOT a
Q22: Drinking water supplies are routinely tested for
Q24: Residual chlorine must be maintained in
A) anaerobic
Q25: Bacteria can increase the Earthʹs temperature by
A)
Q26: Which of the following is mismatched?
A) N2
Q38: Sedimentation of sludge occurs in
A)anaerobic sludge digestion.
B)primary
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