Total No. of Questions : 6] SEAT No.

:
P506 [Total No. of Pages : 2
APR - 18/TE/Insem. - 105

6
8:5
T.E. (Civil)

0:4
ENVIRONMENTAL ENGINEERING - I

81
3/2 1
(2015 Course) (Semester - II)

9
01
8 1 30
Time : 1 Hour] .23 01 [Max. Marks : 30
Instructions to the candidates:
5/0
1) Solve Q1 or Q2, Q3 or Q4, Q5 or Q6.
P

2) Neat diagrams must be drawn wherever necessary.

8.2 G

3) Figures to the right indicate full marks.

.24 CE
16

4) Assume suitable data, if necessary.

5) Use of logarithmic tables, slide rule, mollier charts, electronic pocket calculator

6
and steam tables are allowed.

8:5
49

0:4
Q1) a) What sound pressure level will result from combining following four
81
91
SPLs : [5]
01
30
3/2

71 dB, 64 dB, 76 dB and 79 dB.

01
5/0

b) Discuss various sources of municipal solid waste. Also explain sanitary

GP
81

land fill technique for disposal of MSW. [5]

.23

OR
CE
16

Q2) a) Explain the effect of atmospheric stability conditions on dispersion of

8.2

pollutants. [5] 6
.24

8:5
b) Enlist various equipments used for control of particulate matter pollution.
49

0:4

Also explain with a neat sketch working of Fabric filter. [5]

81
91
01
30
3/2

Q3) a) Enlist methods of population forecast. Explain Incremental Increase

01

method of population forecasting with formula. [5]

5/0
GP
81

b) What are the important requirements of potable water? Also enlist various
factors which affect the rate of demand. [5]
.23
CE
16

OR
8.2

Q4) a) Mention various physical characteristics of water. Discuss in detail

.24

laboratory procedure for determination of Alkalinity present in water.[5]

49

P.T.O.
 b) Find out water demand of a town in the year 2041 by Incremental Increase
method from the following census data : [5]
Year 1961 1971 1981 1991 2001 2011

6
8:5
Population in thousands 65 68 72 79 89 97

0:4
Water is supplied at the rate of 135 lpcd.

81
3/2 1
9
01
8 1 30
.23 01
Q5) a) Enlist various units of water treatment plant. Also mention functions of
5/0
each treatment unit. [5]
8.2 G
P

b) What is principle of sedimentation? Enlist various factors affecting

.24 CE

sedimentation. [5]
16

OR

6
8:5
49

Q6) a) What is aeration of water? Mention various objectives of aeration. [5]

0:4
81
91
b) Two primary settling basins 26m in diameter with 2.1 m side water depth.
01
Single effluent weirs are located on the peripheries of the tank. For water
30
3/2

flow of 26000 m3/day, Calculate, [5]

01
5/0

i) Detention period.
GP
81
.23

ii) Volume.
CE
16

iii) Surface area of tank.

8.2

6
.24

8:5
iv) Overflow rate.
49

0:4

v) Weir loading.
81
91
01
30
3/2
01

llll
5/0
GP
81
.23
CE
16
8.2
.24
49

TE/Insem. - 105 2