VARDHAMAN COLLEGE OF ENGINEERING
(AUTONOMOUS)
B. Tech VI Semester Regular/Supplementary Examinations, May 2018
(Regulations: VCE-R15)
ENVIRONMENTAL ENGINEERING
(Civil Engineering)
Date: 10 May, 2018 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.

Write a comprehensive note on population forecasting with respect to water supply.
7M

The Population of a locality, as obtained from a census report, is given below:
Census Year
1880
1890
1900
1910
1920
1930
1940
1950
1960
Population
8000
12000
17000
22500
29000
37500
47000
57000
66500
Estimate the population of the locality in 1980 by incremental method.
8M
2.

Write a critical note on Infiltration galleries and water intakes.
8M

Explain the physical, chemical characteristics of water.
7M
Unit II
3.

What is jar test and write about its procedure.
7M

Discuss about sedimentation process with respect to water treatment and basic principles governing it.
8M
4.

Compare slow sand filters with rapid sand filters (RSF).
7M

Write comprehensive notes on the methods of disinfection.
8M
Unit III
5.

Compare conservancy and water carriage systems.
8M

What is a manhole? Describe its usage?
7M
6.

Explain the functioning of the automatic flushing tank with a neat sketch.
8M

Catalog the basic principles of good drainage system.
7M
Unit IV
7.

Describe the primary waste water treatment plant with a neat sketch.
8M

Elucidate the secondary waste water treatment using Trickling Filters.
7M
8.

Discuss the applications of grit chambers. How does it function? Give examples.
8M

Explain the activated sludge process with a neat sketch.
7M
Unit V
9.

Depict the various stages of anaerobic sludge digestion.
8M

Explain factors affecting process of Sludge Digestion.
7M
10.

Explain the working of the Oxidation Ditch with a neat diagram.
7M

Illustrate the concept of self-purification of rivers. How this is beneficial for sewage farming.