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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  Environmental Engineering  >  Test: Mechanical Aeration System, Treatment Of Sludge - Civil Engineering (CE) MCQ

Test: Mechanical Aeration System, Treatment Of Sludge - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Environmental Engineering - Test: Mechanical Aeration System, Treatment Of Sludge

Test: Mechanical Aeration System, Treatment Of Sludge for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Mechanical Aeration System, Treatment Of Sludge questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Mechanical Aeration System, Treatment Of Sludge MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Mechanical Aeration System, Treatment Of Sludge below.
Solutions of Test: Mechanical Aeration System, Treatment Of Sludge questions in English are available as part of our Environmental Engineering for Civil Engineering (CE) & Test: Mechanical Aeration System, Treatment Of Sludge 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: Mechanical Aeration System, Treatment Of Sludge | 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: Mechanical Aeration System, Treatment Of Sludge - Question 1
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 The device used for the aeration in the combined aerator is

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Explanation: In combined aeration, both diffused air aeration and mechanical aeration take place using both diffuser plate and paddles.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 2
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The detention period of the Sheffield mechanical aeration tank is

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Explanation: The detention period of a Sheffield mechanical aeration tank is 15 hours. Its return sludge is 15-20% of sewage flow.

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Test: Mechanical Aeration System, Treatment Of Sludge - Question 3
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The minimum detention period of combined aerator is

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Explanation: The detention period of combined aerator lies between 3 to 4 hours and the minimum detention period is 3 hours.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 4
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The speed at which the bubbles are formed in the simplex aerator
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Explanation: The cones, with spiral vanes rotates at a high speed of 60rpm that results in the formation of bubbles in a simplex aerator resulting in the aeration of sewage.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 5
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 Dorroco aerator is a type of
Detailed Solution for Test: Mechanical Aeration System, Treatment Of Sludge - Question 5

Explanation: Dorroco aerator is a type of combined aerator which is efficient in comparison to diffused air and mechanical aerator.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 6
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 Simplex aerator is a type of
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Explanation: Simplex aerator is a type of mechanical aerator where a square or rectangular tank with a hopper bottom is used.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 7
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Which gas is produced in aerobic digestion of sludge? 
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Explanation: Carbon dioxide gas is produced in the aerobic digestion of sludge by the oxidation of organic matter by bacteria into CO2.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 8
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Which of the following process is not involved in the treatment of sludge?
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Explanation: The process involved in the treatment of sludge are thickening, stabilization, dewatering and dying.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 9
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 Which of the following is the final stage in the sludge treatment process?
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Explanation: Drying of the sludge is the final stage in the sludge treatment process where the most stable form of sludge is obtained.

Test: Mechanical Aeration System, Treatment Of Sludge - Question 10
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In which sludge treatment process, the organic solids are converted into more stable form?
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Explanation: In the sludge digestion process, the organic solids are converted into more stable form. It makes the dewatering and drying process of sludge simpler.

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