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प्रश्न
Why is this sewage water treatment essential?
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उत्तर
Importance of sewage water treatment:
- The sewage water contains pathogenic microorganisms like bacteria, viruses, protozoa, and parasitic worms, which can spread a variety of diseases.
- Also, it contains harmful chemicals that may cause toxicity if mixed with the natural resources of water. Therefore, sewage water treatment is essential before it can be discharged into natural bodies.
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संबंधित प्रश्न
What is primary treatment of sewage?
Rearrange the names of tanks used in sewage treatment as per the flow of the procedure.
- Settling tank
- Grit Chamber
- Aeration tanks
- Primary sedimentation tank.
Which of the following is/are found in discharge from industrial waste?
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
Identify the INCORRECT statement with respect to sewage treatment.
Study the following statements regarding tertiary treatment of sewage and choose the correct option.
i. It produces methane gas.
ii. The effluents formed from these plants undergo chlorination.
iii. BOD is significantly increased at this step.
iv. It includes screening and passage of effluent through grit chamber.
What would happen if oxygen availability to activated sludge flocs is reduced?
What is the group of bacteria found in both the rumen of cattle and shidge of sewage treatment?
Why are flocs important in biological treatment of waste water?
In what way anaerobic sludge digestion is important in sewage treatments?
