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प्रश्न
In what way anaerobic sludge digestion is important in sewage treatments?
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उत्तर
In anaerobic sludge digestion, anaerobic bacteria, digest the aerobic bacteria and the fungi in the sludge and the remaining organic matter. During this digestion, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases (biogas) can be used as a source of energy as it is inflammable.
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संबंधित प्रश्न
Explain the role of microbes in sewage treatment.
Explain the function of “anaerobic sludge digester” in a sewage treatment plant.
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20 mg/L, 8 mg/L and 400 mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each, assuming the river water is relatively clean?
Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.
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 TRUE about primary treatment?
In the process of biogas production which of the following anaerobic bacteria are used?
Which of the following is TRUE regarding 'Flocs'?
During sewage, treatment biogas is produced wits which include:
Methanogenic bacteria are not found in ______.
The primary treatment of waste water involves the removal of ______.
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?
What would happen if a large volume of untreated sewage is discharged into a river?
Given below is the flowchart of sewage treatment. Identify A, B, C, D and E and select the correct option.
Which one is wrongly matched?
After a significant reduction in the BOD of wastewater, it is passed into a settling tank where bacterial flocs are allowed to sediment. This sediment is called ______.
