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प्रश्न
Explain the process of secondary treatment given to the primary effluent up to the point it shows significant change in the level of biological oxygen demand (BOD) it.
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उत्तर
The effluent from the primary treatment is passed to aeration tanks where air is pumped into it. The useful aerobic microbes grow into flocs (masses of bacteria associated with fungal filaments) and consume the major part of the organic matter in the effluent which reduces BOD of the effluent. The effluent is then passed into a settling tank where bacterial flocs are allowed to sediment. This sediment is called activated sludge.
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संबंधित प्रश्न
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
What is primary treatment of sewage?
Name the tank to which the sewage water is passed after the preliminary treatment?
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.
What happens during the course of sewage decomposition?
Which of the following is put into Anaerobic sludge disaster for further sewage treatment?
Wastewater treatment generates a large quantity of sludge, which can be treated by ______.
Which one is wrongly matched?
Removal of suspended, floating, coarse and solid particles in sewage treatment is called ______.
What is the major component of municipal wastewater (sewage)?
