Question

List and describe the typical steps in municipal wastewater treatment. List the objectives of each step

Answer 1

There are 9 steps of wastewater treatment. These are-

1)- collection-collect the wastewater from local river , lake etc.

2)-screening - screen out the large items from water. Large items trapped on screen.

3)- chemical addition- chemicals are added to help the particles floating in water clumps together form a heavier.

4)- coagulation- coagulant is added to provide quick mixing.

5)- sedimentation- the large particles are settled out in bottom and then removed these particles.

6)- filtration- clarify water enter into filter from top. Smaller particles are removed.

7)- disinfection- to remove bacteria and virus disinfectant are added. Most common disinfectant is chlorination.

8)- storage- after disinfection process water is stored.

9)- distribution- the stored water is pushed through underground pipelines.