Available Answers

1. 1.

   Write any two sources of wastewater.

2. 2.

   Differentiate between sewer and sewage.

3. 3.

   What is sludge?

4. 4.

   Name the steps involved in wastewater treatment.

5. 5.

   In which stage of water treatment is sewage treated with useful bacteria.

6. 6.

   Why is chlorine gas passed through treated sewage?