Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2171303 Industrial Water Pollution And Control Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2171303 Date:21/01/2021
Subject Name:Industrial Water Pollution & Control
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) What is equalization? Explain its importance in treatment of wastewater.
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(b) Enlist the methods of volume reduction and explain any one.
04
(c) What is Strength Reduction? How can strength reduction of wastewater
07
be achieved?
Q.2 (a) What are the points to be kept in mind while selecting river as a disposal
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sink?
(b) A stream survey has revealed that the reaeration constant is 0.05 d-1 and
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the deoxygenation constant is 0.03 d-1. If the initial DO deficit is 5.00
mg/L and the ultimate BOD after mixing is 12.00 mg/L, how long will
it take to reach the critical point in the DO sag and what will be the value
of critical DO deficit?
(c) Differentiate clearly between Stream standards and effluent standards
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highlighting the benefits and drawbacks of both.
Q.3 (a) How does industrial wastewater differ from domestic waste water?
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(b) Enlist and explain the types of conveyance systems for transporting
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effluents at CETP.
(c) Explain the objectives of CETP.
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Q.4 (a) Explain the different zones of lake based on biological activity.
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(b) Explain why there is a need to recycle and reuse the wastewater.
04
(c) Enlist the treatment technologies for strong industrial wastewaters and
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explain any one in detail.
Q.5 (a) Enlist the technologies to remove oil and grease from wastewater
03
(b) Enlist the sources of oil pollution in industries and explain the effects of
04
oil pollution.
(c) Write a short note on Dissolved Air Flotation technique for treatment of
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oil and grease from wastewater.
Q.6 (a) Enlist the objectives of proportioning the wastewater.
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(b) What is neutralization? Explain any one method of neutralization.
04
(c) Enlist and explain the primary and secondary benefits of pollution
07
control in industries.
Q.7 (a) Differentiate between criteria and standards
03
(b) Enlist and explain the milk processing steps and identify the sources of
04
waste water along with a neat sketch.
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(c) Explain the line of treatment for dairy wastewater for satisfying the
07
discharge norms.
Q.8 (a) Differentiate between concentration based and load based standards.
03
(b) Identify the sources of wastewater for vegetable and chrome tanning.
04
(c) Draw a schematic flow diagram of typical Effluent Treatment Plant for
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cotton textile mill wastewater and explain each process in brief.
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This post was last modified on 04 March 2021