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

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem New 2153509 Liquid Effluent Treatment I Previous Question Paper

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2153509 Date: 29/11/2019

Subject Name: Liquid Effluent Treatment-I
Time: 10:30 AM TO 01:00 PM Total Marks: 70

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

MARKS

Q.1 (a) Differentiate Sewage & Effluent. 03
(b) With a help of a neat sketch explain microbial growth pattern curve. 04
(c) Discuss various sources of drinking water. Also explain utilization of water
for different purpose.








07
Q.2 (a) Explain the principal role and purpose of screen. 03
(b) Differentiate suspended growth process & attached growth process. 04
(c) With a help of a neat sketch explain wet feeding of coagulants. 07
OR
(c) Discuss different population forecasting methods. 07
Q.3 (a) Explain characteristics of grit particles. 03
(b) Discuss limitations of BOD test. 04
(c) With a help of a neat sketch explain different locations of equalization tank. 07
OR
Q.3 (a) Explain the limitation of ultrafiltration over reverse osmosis. 03
(b) Explain the working of Rotating Biological contactor in brief. 04
(c) Define Screening. Classify screens on the basis of their opening size &
method of cleaning in detail.
07
Q.4 (a) Discuss the design aspects of sedimentation tank. 03
(b) With a help of a neat sketch explain Activated sludge process in brief. 04
(c) Discuss physical characteristics of wastewater in detail. 07
OR
Q.4 (a) Enlist different methods of neutralizing waste and explain and one in brief. 03
(b) Write a note on importance & necessity of planned water supplies. 04
(c) With a help of a neat sketch explain vortex type grit chamber. 07
Q.5 (a) Write equation & explain notation in each equation with their units:
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
03
(b) Explain in brief the impacts due to high alkalinity levels in wastewater. 04
(c) Write a note on variations in wastewater flow rates. 07
OR

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

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