Which of the following step involves bacteria in an effluent treatment plant?
(1) Primary treatment
(2) Secondary treatment
(3) Tertiary treatment
(4) All of them
Answers
Answered by
4
hi dear....
answer is....
(3) Tertiary treatment.
Answered by
13
Hi dear..
Answer is....
(3)Tertiary treatment
Answer is....
(3)Tertiary treatment
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