*$_Aerobic biological oxidation ponds used for the purification of pol – McqOptions

MCQOPTIONS

1.	*$_Aerobic biological oxidation ponds used for the purification of polluted water?
A.	Destroys/removes pathogen from the sewage
B.	Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents
C.	Destroys/removes pathogen much more effectively if the sewage is chlorinated
D.	All of the above
Answer» E.

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