Question

1. What is sewage? Explain why it is harmful to discharge untreated sewage into rivers or
seas.
2. Why should oils and fats be not released in the drain? Explain.
3. Describe the steps involved in getting clarified water from wastewater.
4. What is sludge? Explain how it is treated.
5. Untreated human excreta is a health hazard. Explain.
6. Name two chemicals used to disinfect water.
7. Explain the function of bar screens in a wastewater treatment plant.
8. Explain the relationship between sanitation and disease.
9. Outline your role as an active citizen in relation to sanitation

Answer 1

Answer:

To complete secondary treatment effluent from the sedimentation tank is usually disinfected with chlorine before being discharged into receiving Page five waters. Chlorine is fed into the water to kill pathogenic bacteria, and to reduce odor.

Explanation: