Which of the these is a part of the wastewater treatment plant?

In a waste water treatment plant, after passing the waste water through a grit and sand removal tank, the water is allowed to settle in a large tank. The solids that settle at the bottom of large tank and called ____________________

Chimneys of the industries should be __________________ , so that their emissions are given out high up atmosphere.

When waste water is passed through bar screens in WWTP, it removes

Aeration of water during waste water treatment removes __________________

What are the general measures to reduce pollution ?

Which process during waste water teratment helps in eliminating germs ?

In a filtration plant, water is filtered using layers of _____________, fine gravel and medium gravel

What are the products of waste treatment system ?

Which of the following are correct :

(a) Industrial wastes should be recycled and used again.

(b) Proper toilet facilities should be provided to rural people.