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प्रश्न
Explain the role of microbes in sewage treatment.
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उत्तर
Microbes play a significant role during secondary and tertiary sewage treatment.
- During secondary treatment, primary effluent is continuously agitated in a large tank due to which vigorous growth of useful aerobic microbes into flocs takes place. These microbes consume major part of the organic matter in the effluent as they grow. Due to this, BOD of the effluent is significantly reduced.
- During tertiary treatment, bacterial flocs are allowed to sediment. Small part of it is passed back into the aeration tank and a large part is pumped into large tanks called anaerobic sludge digesters. These anaerobic bacteria digest the bacteria and fungi in sludge.
- Thus, use of microbes in sewage treatment helps to remove organic matter from waste water before it is discharged in water bodies like rivers.
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संबंधित प्रश्न
Small part of activated sludge is passed back into primary sedimentation tank.
If the above statement is correct then rewrite as it is and in case it is incorrect then reframe it.
After which of the following process effluents from anaerobic sludge digesters are released in natural water bodies?
Which of the following occurs during tertiary treatment?
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
Which of the following occurs during secondary treatment?
During sewage, treatment biogas is produced wits which include:
Why do we prefer to call secondary waste water treatment as biological treatment?
What is the group of bacteria found in both the rumen of cattle and shidge of sewage treatment?
Which one is wrongly matched?
Explain the steps involved in preliminary treatment of sewage.
