VTU Civil Engineering (Semester 6)
Environmental Engineering 1
June 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Explain the various types of water demand.
8 M
1 (b) What is meant by per capita demand? Mention the factors that affect per capita demand.
6 M
1 (c) What is meant by design period? Discuss the factors affecting design period.
6 M

2 (a) Describe the incremental method of estimating the population of a locality.
6 M
2 (b) Mention the different sources of water supply. Give the factors governing the solution of a particular source of water.
6 M
2 (c) What is an intake? Explain the factors governing the location of an intake.
8 M

3 (a) Enumerate the various physical and chemical characteristics of testing of raw water supplies.
8 M
3 (b) Give the drinking water standards for the following parameters. Discuss their effect when they exceed their limits: i) Turbidity ii) Hardness iii) Chlorides iv) Fluoride.
8 M
3 (c) Explain the method of sampling of water.
4 M

4 (a) Briefly explain the complete treatment process of a water supply scheme with flow chart.
6 M
4 (b) What is aeration? Explain the type of acrators.
6 M
4 (c) Describe briefly the various constituents of coagulation - sedimentation plant.
8 M

5 (a) With the help of a neat sketch, explain the working of Rapid gravity filter.
10 M
5 (b) Design six show sand filters beds from the following data:
Population to be served = 50000 persons; per capita demand=150 lped;
Rate of filtration = 180 litres/hr/sq.m; Length of each bed = Twice the breath.
Assume maximum demand as 1.8 times the average daily demand. Also assume that one unit, out of six, will be kept as stand by.
10 M

6 (a) Explain briefly the following processes: i) Break point chlorination ii) super chlorination.
10 M
6 (b) Mention the methods of softening the water. Describe zeolite process of softening water in detail.
10 M

7 (a) Explain briefly: i) De-fluoridation ii) Desalination.
10 M
7 (b) With sketches, explain briefly dead end system grid iron system of distribution networks.
10 M

Write short notes on:
8 (a) Fire hydrant.
5 M
8 (b) Pressure release valve.
5 M
8 (c) Metering in distribution system.
5 M
8 (d) Jar test.
5 M



More question papers from Environmental Engineering 1
SPONSORED ADVERTISEMENTS