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प्रश्न
Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?
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उत्तर
Flocs are masses of bacteria associated with fungal filaments and they are helpful in increasing the decomposition rate and they are put in the aeration tank while secondary sewage treatment is in process.
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संबंधित प्रश्न
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
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