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Environmental Engineering 1 Question Paper - Jun 19 - Civil Engineering (Semester 5) - Mumbai University (MU)
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Environmental Engineering 1 - Jun 19

Civil Engineering (Semester 5)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.

1.a. Write down the permissible limits for following parameters set by BIS and its significance i) Residual chlorine ii) Turbidity iii) hardness iv) chlorides v) Alkalinity.
(5 marks) 00

1.b. Explain classification of distribution system with neat sketch
(5 marks) 00

1.c. Give the requirements of good water meter
(5 marks) 00

1.d. What are the impacts of air pollution on man and environment?
(5 marks) 00

1.e. Compare chlorine and ozone as disinfectant
(5 marks) 00

2.a. Draw the flow diagram of water treatment process and explain each component in details
(10 marks) 00

2.b. What do you mean by intake structure? Explain any 3 types of it
(5 marks) 00

2.c. What are the factors that affecting efficiency of sedimentation?
(5 marks) 00

3.a. Design approximate dimensions of a set of rapid gravity filters for treating water required for a population of 65,000. The rate of supply being 140 lpcd. The filters are rated to work 5000 lit/ hr/mstrong text2 Assume data necessary.
(5 marks) 00

3.b. Draw the neat and well labeled sketch of pressure filter.
(5 marks) 00

3.c. Explain different methods of disinfection and its suitability
(10 marks) 00

4.a. Explain in detail sources, effects, control methods of noise pollution.
(10 marks) 00

4.b. Calculate quantity of bleaching powder required per day for disinfecting 5 MLD. The dose of chlorine has to be 0.7 ppm and bleaching powder contains 30% of available chlorine
(10 marks) 00

5.a. Classify and discuss the different air pollutants.
(10 marks) 00

5.b. Define water softening. Explain Ion-exchange process in detail
(10 marks) 00

6.a. Short note on Residual chlorine.
(5 marks) 00

6.b. Short note on tube settlers
(5 marks) 00

6.c. Short note on rapid mixing devices
(5 marks) 00

6.d. Short note on reverse osmosis
(5 marks) 00

6.e. Short note on methods of collection of rain water for direct use.
(5 marks) 00

6.f. Short note on occupational hazards due to air pollution
(5 marks) 00

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