Use of chlorine in the treatment of sewage? – McqOptions

MCQOPTIONS

1.	Use of chlorine in the treatment of sewage?
A.	Helps in grease separation
B.	Increases the biological oxygen demand(BOD)
C.	Causes bulking of activated sludge
D.	Aids in flocculation
Answer» B. Increases the biological oxygen demand(BOD)

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