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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  Environmental Engineering  >  Test: Sludge Thickening, Sludge Dewatering - Civil Engineering (CE) MCQ

Test: Sludge Thickening, Sludge Dewatering - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Environmental Engineering - Test: Sludge Thickening, Sludge Dewatering

Test: Sludge Thickening, Sludge Dewatering for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Sludge Thickening, Sludge Dewatering questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Sludge Thickening, Sludge Dewatering MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Sludge Thickening, Sludge Dewatering below.
Solutions of Test: Sludge Thickening, Sludge Dewatering questions in English are available as part of our Environmental Engineering for Civil Engineering (CE) & Test: Sludge Thickening, Sludge Dewatering 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: Sludge Thickening, Sludge Dewatering | 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: Sludge Thickening, Sludge Dewatering - Question 1
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 The design solid surface loading in an activated sludge process is 

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Explanation: The design solid surface loading during a gravity thickening process in an activated sludge plant lies between 25 to 30 kg/m2/day.

Test: Sludge Thickening, Sludge Dewatering - Question 2
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Which of the following plant nutrient is not found in municipal sewage?

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Explanation: Potassium, Phosphorous and Nitrogen are found in municipal sewage having maximum plant nutrient concentration of 3.3% of total municipal waste as nitrogen.

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Test: Sludge Thickening, Sludge Dewatering - Question 3
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The design pressure of ____ is applied on pressure type flotation device. 

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Explanation: In pressure type flotation device, 3-5kg/cm2 pressure is applied to the sludge thickening process.

Test: Sludge Thickening, Sludge Dewatering - Question 4
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The design Hydraulic loading rate of the gravity thickener is _______ m3/m2/day. 
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Explanation: The range of design Hydraulic loading rate of the gravity thickener is 20-25m3/m2/day.

Test: Sludge Thickening, Sludge Dewatering - Question 5
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 Which of the following process is not involved in sludge thickening?
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Explanation: The process involved in sludge thickening are gravity thickening, air flotation and centrifugation.

Test: Sludge Thickening, Sludge Dewatering - Question 6
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7% of solids concentration of thickened sludge is obtained from gravity thickener.What is the type of sludge?
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Explanation: When the thickened sludge, solid concentration is between 7-9, the type of sludge obtained from gravity thickner is activated.

Test: Sludge Thickening, Sludge Dewatering - Question 7
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Which of the following is not used for drying of sludge?
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Explanation: The process used for drying of sludge is multiple effect evaporation, rotary dryer, spray dryer and flash dryer.

Test: Sludge Thickening, Sludge Dewatering - Question 8
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 In which of the following method, the sludge is rotated for dewatering process?
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Explanation: In the centrifugation process, the force is applied so that rotation of sludge takes place which helps in the dewatering of sludge.

Test: Sludge Thickening, Sludge Dewatering - Question 9
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 The dewatered sludge cannot be disposed by
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Explanation: Acid fermentation is a sludge digestion process and composting, heat drying and incineration are the methods of disposal of dewatered sludge.

Test: Sludge Thickening, Sludge Dewatering - Question 10
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In which of the following process, the sludge is dried and disposed in land?
Detailed Solution for Test: Sludge Thickening, Sludge Dewatering - Question 10

Explanation: Good amount of dried solids is produced by drying bed process and they are commonly used in the sludge dewatering process due to their low cost and better efficiency.

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