In which of the following, both primary and secondary tanks are used? Options: A . &nbspTwo stage sludge digesters B . &nbspSingle stage sludge digesters C . &nbspLow rate digesters D . &nbspHigh rate digesters

In which of the following, both primary and secondary tanks are used?

Question

In which of the following, both primary and secondary tanks are used?

Options:

A . Two stage sludge digesters

B . Single stage sludge digesters

C . Low rate digesters

D . High rate digesters

Answer: Option A
Answer: (a).Two stage sludge digesters

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Question 1. The minimum size of sludge digestion tank is ___________....

Question 2. The range of temperature at which mesophilic microorganism becomes active in sludge digester is ___________....

Question 3. The maximum BOD removal efficiency of the Step aeration process of the activated sludge system is ___________....

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