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14/09/2020 6:27 pm
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Which of the following is put into Anaerobic sludge digester for further sewage treatment?
(1) Floating debris
(2) Effluents of primary treatment
(3) Activated sludge
(4) Primary sludge
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14/09/2020 6:27 pm
Correct Answer: (3) Activated sludge