Question

what is sewage explain why it is harmful to discharge untreated sewage into river or sea

Answer 1

Combined sewers transport both wastewater and surface water runoff to wastewater treatment plants (WWTPs). Heavy, intense or prolonged rainfall can overload these combined sewers, which can overwhelm downstream treatment facilities. A combined sewer overflow, or CSO - also known as a stormwater regulator - is designed to act as a kind of safety valve for the WWTP that diverts excess wet weather flow, enabling the plant to continue operating and preventing upstream flooding.

Answer 2

HEYA!! HERE IS YOUR ANSWER DEAR


sewage is waste , polluted and contaminated water conveyed in sewers .


it is harmful to discharge sewage into river or sea as it will pollute river or sea water causing the death of aquatic plants and animals.


I HOPE THIS WILL HELP YOU DEAR!!!