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Envt- Activated Sludge Process-quiz (App update required to attempt this test)
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Question 1
The type of settling in the secondary sedimentation tank of activated sludge process is
Question 2
The most important type of species involved in the degradation of organic matter in the case of activated sludge process is
Question 3
Find the percentage reduction in volume of the sludge when the moisture content of the sludge gets reduced to 88% from earlier 92%.
Question 4
Which of the following is the F/M ratio for conventional ASP system?
Question 5
Sludge age is ratio of
Question 6
In a complete mix process
Qo = 10000 m3/day
BOD after PST = 150 mg/lit
Efficient BOD = 20 mg/lit
Volume of Aeration tank = 2000 m3
MLSS = 3000 mg/lit
F/M ratio will be
Question 7
A treatment plant has 2 rapid sand filters, if the water demand of a city is 24 million litres per day then find out how many more number of rapid sand filters are required for its treatment?
Question 8
If the detention period is 24 hours and flow rate into the tank is 80 lpcd then surface loading of a septic tank (required for 150 persons), having length to width ratio of 2 and depth of waste water about 1m, is (in m3/m2/day) ________.
Question 9
Which of the following statements are incorrect:
1- CH4 and CO2 are formed as the end product of anerobical biological degradation of sewage.
2- The aerobic digestion is energy intensive process.
1- CH4 and CO2 are formed as the end product of anerobical biological degradation of sewage.
2- The aerobic digestion is energy intensive process.
Question 10
Which of the f0ollowing bacteria helps in satisfying second stage Biochemical oxygen demand
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May 11ESE & GATE CE
