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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