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प्रश्न
What is the group of bacteria found in both the rumen of cattle and shidge of sewage treatment?
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उत्तर
Methanogens are the group of bacteria found in both the rumen of cattle and sludge of sewage treatment.
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संबंधित प्रश्न
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
What is the key difference between primary and secondary sewage treatment?
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?
Answer the following question.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.
Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.
Name the tank to which the sewage water is passed after the preliminary treatment?
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
Into which of the following the sewage water is pumped after preliminary treatment?
Identify the INCORRECT statement with respect to 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.
After which of the following treatment BOD of the effluent is significantly reduced?
Which of the following is TRUE regarding 'Flocs'?
BOD of waste water is estimated by measuring the amount of ______.
What would happen if a large volume of untreated sewage is discharged into a river?
Which one is wrongly matched?
Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from ______.
