Q. The sludge is digested in which of the following?

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Q. The gas chamber in the below figure is represented by _____________

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Q. The sewage comes in the Imhoff tank through which of the following?

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Q. The detention period of the sedimentation chamber of an Imhoff tank is?

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Q. B in the following figure is represented by ____________

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Q. Which of the following is called a scum chamber in the following figure?

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Q. Which of the following is an anaerobic process for treating sewage?

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Q. The minimum design depth of oxidation pond is ___________

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Q. Oxidation pond is ineffective in removing pathogenic bacteria.

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Q. The detention period of oxidation pond is ___________

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Q. The maximum BOD removal efficiency of an oxidation pond is ___________

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Q. What is the minimum depth of water to be kept in the oxidation pond?

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Q. Which chemical is added to the oxidation pond to avoid bad odor?

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Q. The disposal of sewage from the septic tank is done by which of the following?

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Q. The detention period of a septic tank is ___________

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Q. The concentration of biodegradable organic matter after the septic tank is ___________

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Q. What is the maximum design flow of sewage in a septic tank?

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Q. Which of the following is not the method of disposal of sewage from septic tank?

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Q. The minimum depth of septic tank as per design consideration is ___________

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Q. What is the type of filter used in the septic tank when the rate of percolation is 90 minutes?

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