STUPIDSID
Answer any one question from Q1 and Q2
1
Explain the noise control techniques.
6 M
2
Explain primary and secondary air pollutants and state their importance.
6 M
Answer any one question from Q3 and Q4
3
Explain with neat sketch the working, location and function of air relief valve and non-return valve.
6 M
4
Explain with neat sketch river intake and lake intake.
6 M
Answer any one question from Q5 and 6
5
Explain type I and type II settling. What are the various types of plain sedimentation basins? Explain any one basin type with a neat sketh.
8 M
6
Design a tube settler module with the following data-
a) Average output required from tube settler = 250m3 /hr.
b) Loss of water in desludging = 2% of output required.
c) Average design flow = (250×100)/(100-2) = 255.1 m3 /hr.
d) Cross section of square tubes ?50mm × 50mm.
e) Length of tubes = 1m.
f) Angle of inclination of tubes 60°.
a) Average output required from tube settler = 250m3 /hr.
b) Loss of water in desludging = 2% of output required.
c) Average design flow = (250×100)/(100-2) = 255.1 m3 /hr.
d) Cross section of square tubes ?50mm × 50mm.
e) Length of tubes = 1m.
f) Angle of inclination of tubes 60°.
8 M
Answer any one question from Q7 and Q8
7
Design a clariflocculator for desired average outflow of 250m3/hr, water lost in desludging-2%, design average flow = (250×100)/ (100-2)=255.1 m3/hr, detention period - 20 minutes and average value of velocity gradient G = 40/ second.
16 M
8
Design a RSGF unit for treating 400 MLD of supply, with under-drainage system and wash water troughs.
16 M
Answer any one question from Q9 and Q10
9 (a)
Explain chlorine demand, residual chlorine, super chlorination, dechlorination, rechlorination and post chlorination.
9 M
9 (b)
Chlorine usage in treatment plant of 20MLD of water is 8.5 kg/day. The residual chlorine content after 10min. Is 0.2 mg/L. Calculate dosage of chlorine in mg/L and chlorine demand of water.
4 M
9 (c)
State the factors affecting chlorination.
3 M
10
State the principles, working, advantages and disadvantages of water softening by zeolite method and demineralization of water by ion exchange method.
16 M
Answer any one question from Q11 and Q12
11 (a)
Describe the various layouts of distribution networks in water supply scheme and state their advantages and disadvantages.
10 M
11 (b)
Explain detection and prevention of wastage of water.
8 M
12 (a)
Explain the benefits of rain water harvesting and discuss the different methods of rain water harvesting.
10 M
12 (b)
Explain RO process with a neat sketch.
8 M
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