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Monday, December 28, 2015

T.E. (Civil) (Semester – II),2010 Question Paper,University Of Pune Question Paper,ENVIRONMENTAL ENGINEERING – I

University Of Pune Question Paper
T.E. (Civil) (Semester – II) Examination, 2010
ENVIRONMENTAL ENGINEERING – I
(2003 Course)
Time : 3 Hours Max. Marks : 100
 Instructions : 1) Answer any 3 questions from each Section.
2) Answers to the two Sections should be written in separate
books.
3) Neat diagrams must be drawn wherever necessary.
4) Black figures to the right indicate full marks.
5) Your answers will be valued as a whole.
6) Use of logarithmic tables, slide rule, Mollier charts, electronic
pocket calculator and steam tables is allowed.
7) Assume suitable, data if necessary.
8) Solve Q. 1 or Q. 2, Q. 3 or Q. 4, Q. 5 or Q. 6 from
Section I and Q. 7 or Q. 8, Q. 9 or Q. 10, Q. 11 or Q. 12
from Section II.
SECTION – I
1. a) List the sources of noise and explain various effects caused due to noise
pollution on human. 6
b) Explain :
i) Ecology ii) Water pollution 4
c) Write short note on :
i) Composting ii) Sanitary landfill 8
OR
2. a) Explain on site handling, storage and processing of solid wastes. 6
b) Explain various techniques used to control noise pollution. 6
c) Describe the classification of solid wastes. 6
3. a) State standards specified by CPCB for ambient air for various categories of
area. 4
b) Write short note on : 12
i) Stability of atmosphere and its effects on dispersion of air pollutants
ii) Fabric filter.
OR
4. a) Define “Air Pollution” as per IS. Enlist major natural and man made sources
of Air Pollution. 5
b) What is the effect of stable, unstable and neutral atmosphere on dispersion of
Air Pollutants ? 5
c) Explain the methods used to control vehicular pollution. 6
5. a) How is the provision made for fire demand in water supply scheme ? 4
b) Define Rainwater harvesting. Write different types of rainwater harvesting system
and explain any one in detail. 6
c) The following data has been noted from the census department 6
Year 1970 1980 1990 2000
Population 8000 12000 17000 22500
Forecast the population for year 2010, 2020 and 2030 by means of incremental
increase method.
OR
6. a) Explain need of rainwater harvesting system and precautions to be taken for
rainwater harvesting. 6
b) Write down the standards of Govt. of India for drinking water for the following : 4
i) pH ii) Fluorides
iii) Mitrites iv) Iron
v) Chlorides vi) MPN
vii) Hardness viii) Sulphates
c) Describe different phases involved in a water supply scheme. 6
SECTION – II
7. a) Explain theory of coagulation. Give equations of coagulation by Alum. 6
b) Explain the purpose and limitations of aeriation. 4
c) Design a circular sedimentation tank fitted with mechanical sludge remover
for a water work which has to supply daily 4.2 million litres of water to the
town. The detention period in the tank for water is 4.5 hrs. and the depth of
water in the tank may be assumed 3.3 m. 8
OR
8. a) Explain theory of sedimentation. Prove that, theoretically, the surface loading
Q/A and not the depth of water is a measure of effective removal of particles
in sedimentation tank. 7
b) Draw a flow diagram of river water treatment process for a city. Explain the
purpose of any two units used for water treatment. 7
c) What do you mean by treatment of water ? State the objects of treatment of
water. 4
9. a) Define filtration. What are the objects of filtration ? 4
b) Enlist various methods of disinfecting water. Comment on chlorination as the
best method of disinfection for public water supplies. 6
c) Explain electrodialysis. 6
OR
10. a) Explain zeolite process to remove hardness. Give the appropriate chemical
equations. 4
b) Explain theory of chlorination. State the factors affecting chlorine demand. 6
c) Design a rapid sand filter unit for treating 5×106
 e/d supply for a town. The
filter has to work day and night. Take 4500 e/m2
/hr as the rate of filtration. 6
11. a) Compare continuous and intermittent systems of water supply. 4
b) Enlist any 8 appurtenances used in the water distribution system. Explain the
requirements of a good water meter. 8
c) Write short note on mass curve method. 4
OR
12. a) Explain the necessity of distribution reservoir and the way in which its capacity
is fixed. 6
b) State the requirements which are considered while designing the distribution
system. 4
c) Explain the following layout system for distribution : 6
i) Dead end system
ii) Radial system.
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