Question

6. (a) What is sewage?
(b) What is the key difference between primary and secondary sewage treatment?
Sample Papers​

Answer 1

Answer:

plz refer class 12 HSC textbook......ls no 5 microbes in human welfare......it is given straight forward there.....read means you will understand

Answer 2

The main difference is the way each respective treatment is processed. Primary treatment works on sedimentation, where solids separate from the water through several different tanks. In contrast, secondary treatment uses aeration, biofiltration and the interaction of waste throughout its process

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