Question

List the ways in which wastewater present in sewage is generated and the kind of contaminants present in each.

Answer 1

Sewage wastewater includes:
(i) Waste water generated in houses during bathing, washing and cleaning kitchen utensils, which contains detergent and dirt as well as faeces and urine.
(ii) Wastewater generated in industries and hospitals, which contains poisonous chemicals.
(iii) Rainwater that has run down, which contains harmful substances.