Why is sewage said to be a complex mixture?

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Sewage contains many substances in it like suspended solids, organic and inorganic impurities, nutrients, saprotrophic and disease causing bacteria and other microbes. Hence it is said to be a complex mixture.

Answered by  | 4th Jun, 2014, 03:23: PM