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प्रश्न
What is primary treatment of sewage?
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उत्तर
Filtration and sedimentation [Physical process] to remove floating debris and heavy particles respectively are primary treatment of sewage.
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संबंधित प्रश्न
Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.
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.
Due to which of the following reason/s sewage water cannot be discharged directly into river?
Identify the type of microorganisms involved in floe formation during 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.
In a sewage treatment plant, all of the following processes belong to secondary treatment except:
What would happen if a large volume of untreated sewage is discharged into a river?
Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from ______.
In a sewage treatment plant, grit comprising soil and small pebbles is removed during which stage and process?
By what percentage does the decomposition of organic matter by aerobic bacteria in aeration tanks typically lower the BOD during secondary treatment?
