Physical removal of large and small particle from the sewage through filtration and sedimentation is calledA. Primary treatmentB. Secondary treatmentC. Biological treatmentD. Both B and C

Physical removal of large and small particle from the sewage through f

1.	Physical removal of large and small particle from the sewage through filtration and sedimentation is calledA. Primary treatmentB. Secondary treatmentC. Biological treatmentD. Both B and C
Answer» Correct Answer - A Physical removal of large and small particles from the sewage through filtration and sedimentation is called primary treatment.

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Physical removal of large and small particle from the sewage through filtration and sedimentation is calledA. Primary treatmentB. Secondary treatmentC. Biological treatmentD. Both B and C

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