GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-VII(NEW) EXAMINATION - SUMMER 2019
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Subject Code:2171303 Date:14/05/2019
Subject Name:Industrial Water Pollution & Control
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Difference between effluent standards and stream standards. (03)
(b) Enlist the different steps for conservation of water in industries. (04)
(c) Justify “why there are different discharge standards for different environmental sinks”. (07)
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Q.2 (a) Difference between “criteria” and “standards”. (03)
(b) Explain how industrial wastewaters differ from domestic wastewater. (04)
(c) What are the three major classification of industrial waste at industrial plant for volume reduction? (07)
OR
(c) What advantages gain by installing modern methods of monitoring waste contaminants as far as strength reduction is concern? (07)
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Q.3 (a) Name seven major methods of neutralization, both acid and alkaline wastes. (03)
(b) Explain in detail caustic soda treatment. (04)
(c) What are the advantages of using lime slurry rather than limestone beds for neutralization? (07)
OR
Q.3 (a) Explain the secondary and tertiary benefits of pollution control. (03)
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(b) Write a note on ‘Waste management hierarchy’. (04)
(c) What is meant by industrial water pollution? Describe what happen when waste water from industries is discharged into nearby stream. (07)
Q.4 (a) Explain with the help of an example “population equivalent’. (03)
(b) How does segregation reduce the strength of waste water? Give an example (04)
(c) Write a short note on “Basic Water quality parameter required for boiler feed water and cooling water.” (07)
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OR
Q.4 (a) What are the objectives of proportioning of industrial waste? (03)
(b) What are the fourmethods of mixing to effect the equalization? (04)
(c) Write down wastewater characteristic of effluent generated from textile industries. Also draw suitable wastewater treatment plant for the same. (07)
Q.5 (a) Write down the limitations of land disposal of sewage. (03)
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(b) Write a note on “DO sag curve”. (04)
(c) What is Evaporation? How it is useful for treatment of strong industrial waste. (07)
OR
Q.5 (a) Explain the basic objective of setting up a CETP. (03)
(b) Describe limitations of CETP. (04)
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(c) Derive the equation for steady state concentration of pollution in a lake. (07)
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