Question

From which one of these does sewage pass through to remove larger impurities?​

Answer 1

Answer:

Filtration

Explanation:

The wastewater is passed through bar screen. Large objects; like rags, sticks, plastic bags, cans, etc. are removed in this process.

Answer 2

Answer:

sewage must be treated before throwing or discharging it

Explanation:

because it produces so much water pollution and we must save our environment