STUPIDSID
1(a)
Describe the fluctuation per day in flow of sewage of a city.
2 M
1(b)
Describe various shapes of sewer with merits and demerits.
2 M
1(c)
Describe the combined and separate system of sewerage, with their merits and demerits.
3 M
Solve any one question from Q.1(d) & Q.1(e)
1(d)
What do you understand by "Sewer appurtenance", Enumerate various appurtenances commonly used. Explain any two in details.
7 M
1(e)
For a small town, having projected population of 30,000 residing over an area 20 hectares. Find the design discharge for the combined sever for the following data
rate of water supply=150lit/day/per capita
Runoff coefficient=0.40
Time of concentration =30 minutes
rate of water supply=150lit/day/per capita
Runoff coefficient=0.40
Time of concentration =30 minutes
7 M
2(a)
Define the term relative stability and population equivalent.
2 M
2(b)
Write short note on "Self purification capacity of river".
2 M
2(c)
Enumerate various physical and chemical characteristics of sewage with their definitions.
3 M
Solve any one question from Q.2(d) & Q.2(e)
2(d)
What is sewage farming? What are its advantages over the methods of sewage disposal by dilution? What precautions must be taken in its operation to prevent health hazards.
7 M
2(e)
Describe the BOD of sewage with influencing parameters. Calculate the 1day 37°C BOD of a sewage sample whose 5 day 20°C BOD is 100mg/lit.
7 M
3(a)
Enumerate the various stages of sewage treatment with unit of treatment of each stag.
2 M
3(b)
Write short note on "Skimming tank" Or "Grit Chamber".
2 M
3(c)
Enumerate the types of screen and their functions in sewage treatment.
3 M
Solve any one question from Q.3(d) & Q.3(e)
3(d)
What is sedimentation?How it can improve with coagulants? Describe the functioning of a rectangular sedimentation tank with neat sketch. Also stated the key parameters which considered in design of a sedimentation tank.
7 M
3(e)
What is trickling filter, explain with neat sketch. Compare the conventional and high rate trickling filter. Also stated the key parameters which considered in design of a trickling filter.
7 M
4(a)
Differentiate between aerobic and non aerobic decomposition of sewage.
2 M
4(b)
Define the functioning of Oxidation pond.
2 M
4(c)
Describe the functioning of Septic tank with neat sketch.
3 M
Solve any one question from Q.4(d) & Q.4(e)
4(d)
What is meant by activated sludge? Describe with sketches the treatment of sewage by activated sludge process. Also mention the merits and demerits of activated sludge process method.
7 M
4(e)
What is meant by digestion of sewage sludge? Describe the functioning of a digesting tank with sketch. Also mention the term "Sludge digestion index".
7 M
5(a)
Write short note on "Diatomaceous earth filter"
2 M
5(b)
Write short note on "Adsorption by activated carbon".
2 M
5(c)
Define conservancy system of sanitation. Describe the various types of privies, that are used in conservancy system of sanitation.
3 M
Solve any one question from Q.5(d) & Q.5(e)
5(d)
What is the meant of "Sulabh souchalya". Describe with sketch. Why are they finding increasing uses in developing countries like India.
7 M
5(e)
Write short note on
i) Physio chemical waste water treatment.
Phosphorus removal
i) Physio chemical waste water treatment.
Phosphorus removal
7 M
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