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प्रश्न
BOD of waste water is estimated by measuring the amount of ______.
पर्याय
total organic matter
biodegradable organic matter
oxygen evolution
oxygen consumption
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उत्तर
BOD of waste water is estimated by measuring the amount of oxygen consumption.
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संबंधित 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.
Explain the function of “anaerobic sludge digester” in a sewage treatment plant.
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.
What are ‘flocs’, formed during secondary treatment of sewage?
Name the tank to which the sewage water is passed after the preliminary treatment?
What are flocs with respect to sewage treatment?
The purpose of biological treatment of waste water is to ______.
Which of the following is/are found in discharge from industrial waste?
Into which of the following the sewage water is pumped after preliminary treatment?
Identify the INCORRECT statement with respect to sewage treatment.
What happens during the course of sewage decomposition?
During tertiary treatment, the bacterial floes sediment in the sedimentation tank, this sediment is called ____________.
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 process is a part of preliminary treatment of sewage?
Methanogenic bacteria are not found in ______.
Activated sludge should have the ability to settle quickly so that it can ______.
In what way anaerobic sludge digestion is important in sewage treatments?
Given below is the flowchart of sewage treatment. Identify A, B, C, D and E and select the correct option.
