What are the different types of inorganic and organic impurities generally present in sewage?

Question

Philoid · Accepted Answer

Different types of inorganic and organic impurities generally present in sewage are as follows:

Inorganic impurities: nitrate, phosphate, metals etc.

Organic impurities : human faeces, animal waste, oil, urea present in urine, pesticides, herbicides, fruits and vegetable peels etc.