What is sewage ? Explain why it is harmful to discharge untreated sewage in to river or seas?
Answers
sewage is waste produced due to household means .it is harmfull to discharge it in rivers as it may contaminate drinking water,affect marine life and health of ppl
SEWAGE
sewage is a flowing combination of waste water and human excrement. It may consist of tissue papers
Sewage should not be discharged into water bodies because;
> it contains chemical substances that can cause damage to water bodies that supports life
> bacterial content of sewage such as E coli can infect water and cause diseases
>plastic waste and tissue papers can pollute water hence making it harmful
>bacteria in sewage uses up oxygen as they decompose organic wastes hence leading to suffocation of other living organisms
>fertilizer chemicals such as nitrogen and phosphorus can cause excessive growth of algae