Which of the following WWTP steps can be skipped while treating sewage if it does not contain any organic impurities?
(A) Bar screen
(B) Grit and sand removal tank
(C) Aeration
(D) Clarifier tank where water settles for long time
(E) All the processes are necessary
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Which of the following WWTP steps can be skipped while treating sewage if it does not contain any organic impurities?
(A) Bar screen
(B) Grit and sand removal tank
(C) Aeration
(D) Clarifier tank where water settles for long time
(E) All the processes are necessary
→(D) Clarifier tank where water settles for long time
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