Download GTU BE/B.Tech 2019 Winter 5th Sem New 2153509 Liquid Effluent Treatment I Question Paper

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Subject Code: 2153509
BE - SEMESTER- V (New) EXAMINATION — WINTER 2019
Subject Name: Liquid Effluent Treatment-I
Time: 10:30 AM TO 01:00 PM
Instructions:

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1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Differentiate Sewage & Effluent. (MARKS 03)

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(b) With a help of a neat sketch explain microbial growth pattern curve. (MARKS 04)
(c) Discuss various sources of drinking water. Also explain utilization of water for different purpose. (MARKS 07)

Q.2 (a) Explain the principal role and purpose of screen. (MARKS 03)
(b) Differentiate suspended growth process & attached growth process. (MARKS 04)

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(c) With a help of a neat sketch explain wet feeding of coagulants. (MARKS 07)
OR
(c) Discuss different population forecasting methods. (MARKS 07)

Q.3 (a) Explain characteristics of grit particles. (MARKS 03)

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(b) Discuss limitations of BOD test. (MARKS 04)
(c) With a help of a neat sketch explain different locations of equalization tank. (MARKS 07)
OR
Q.3 (a) Explain the limitation of ultrafiltration over reverse osmosis. (MARKS 03)
(b) Explain the working of Rotating Biological contactor in brief. (MARKS 04)

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(c) Define Screening. Classify screens on the basis of their opening size & method of cleaning in detail. (MARKS 07)

Q.4 (a) Discuss the design aspects of sedimentation tank. (MARKS 03)
(b) With a help of a neat sketch explain Activated sludge process in brief. (MARKS 04)
(c) Discuss physical characteristics of wastewater in detail. (MARKS 07)

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OR
Q.4 (a) Enlist different methods of neutralizing waste and explain and one in brief. (MARKS 03)
(b) Write a note on importance & necessity of planned water supplies. (MARKS 04)
(c) With a help of a neat sketch explain vortex type grit chamber. (MARKS 07)

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Q.5 (a) Write equation & explain notation in each equation with their units: (MARKS 03)
1. Krishmer’s equation to calculate head loss through a bar rack
2. Head loss through fine screens
3. Head loss through partially cleaned bar screen
(b) Explain in brief the impacts due to high alkalinity levels in wastewater. (MARKS 04)

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(c) Write a note on variations in wastewater flow rates. (MARKS 07)
OR
Q.5 (a) Differentiate Stream Standards & Effluent Standards. (MARKS 03)
(b) Enlist different types of sedimentation tanks and explain Circular sedimentation tank in detail with a neat sketch. (MARKS 04)
(c) Enlist different water borne diseases. Also discuss preventive steps to be taken care of during epidemics. (MARKS 07)

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Date: 29/11/2019
Total Marks: 70