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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  Environmental Engineering  >  Test: Design Of Activated Sludge Plant - Civil Engineering (CE) MCQ

Test: Design Of Activated Sludge Plant - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Environmental Engineering - Test: Design Of Activated Sludge Plant

Test: Design Of Activated Sludge Plant for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Design Of Activated Sludge Plant questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Design Of Activated Sludge Plant MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Design Of Activated Sludge Plant below.
Solutions of Test: Design Of Activated Sludge Plant questions in English are available as part of our Environmental Engineering for Civil Engineering (CE) & Test: Design Of Activated Sludge Plant solutions in Hindi for Environmental Engineering course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt Test: Design Of Activated Sludge Plant | 10 questions in 25 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study Environmental Engineering for Civil Engineering (CE) Exam | Download free PDF with solutions
Test: Design Of Activated Sludge Plant - Question 1
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Which of the following is the correct expression of the aeration period in hours?

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Explanation: Aeration period = 24V/Q where, V is the volume of the tank and Q is the quantity of sewage. It is measured in hours.

Test: Design Of Activated Sludge Plant - Question 2
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 Which of the following activated sludge process has minimum food to microorganism ratio?

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Explanation: Extended aeration process has minimum food to microorganism ratio of 0.5 which means it has the maximum BOD removal efficiency.

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Test: Design Of Activated Sludge Plant - Question 3
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The maximum aeration period for a conventional activated sludge system is

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Explanation: The detention period for a conventional activated sludge system is between 4 to 6 hours.

Test: Design Of Activated Sludge Plant - Question 4
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 The organic loading in an activated sludge plant is defined as
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Explanation: The organic loading in an activated sludge plant is defined as the mass of BOD to the aeration tank in grams per unit volume of aeration tank in m3.

Test: Design Of Activated Sludge Plant - Question 5
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_________ is defined as a volume in ml occupied by 1gram of solid in the mixed liquor after 30 minutes of settling.
Detailed Solution for Test: Design Of Activated Sludge Plant - Question 5

Explanation: Sludge volume index is used to indicate the settling behavior of sludge. It is measured in ml/gm.

Test: Design Of Activated Sludge Plant - Question 6
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 The design value of food to microorganism ratio in the tapered aeration sludge process is
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Explanation: The design value of food to microorganism ratio is 0.3-0.4 for a tapered aeration sludge process.

Test: Design Of Activated Sludge Plant - Question 7
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Which of the following sludge process has maximum aeration period?
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Explanation: Extended process has the maximum aeration period of 12 to 24 hours.

Test: Design Of Activated Sludge Plant - Question 8
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The maximum BOD removal efficiency of the Step aeration process of the activated sludge system is
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Explanation: The BOD removal efficiency of the step aeration process of the activated sludge system is between 85% to 92%.

Test: Design Of Activated Sludge Plant - Question 9
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 _________ is the time at which sewage is detained in the aeration tank.
Detailed Solution for Test: Design Of Activated Sludge Plant - Question 9

Explanation: Aeration period decides the loading rate at which sewage is introduced in the aeration tank.

Test: Design Of Activated Sludge Plant - Question 10
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Which of the following has minimum hydraulic retention time?
Detailed Solution for Test: Design Of Activated Sludge Plant - Question 10

Explanation: Modified aeration process has a minimum hydraulic retention time with an aeration period of 1.5 hours.

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