Kerala University 2009 B.Pharm Seventh Semester B.Tech ,, 03-705 : ENVIRONMENTAL ENGINEERING-I (C), (2003 Scheme) - Question Paper

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Reg. No. : .....................................
Name : ..........................................

Seventh Semester B.Tech. Degree Examination, June 2009

03-705 : ENVIRONMENTAL ENGINEERING-I (C), (2003 Scheme)

Time : three Hours Max. Marks : 100

Instructions: ans all ques.. presume suitable data if necessary.

PART – A

1. What is the importance and necessity of planned water supply schemes ?

2. What is an intake ? Write 4 points to be remembered in selecting site for intake structure.

3. What is coagulation ? discuss alum as a coagulant.

4. What are the various theories of filtration ? discuss any four.

5. Explain the functions of service reservoirs.

6. What is meant by design periods and population forecast ?

7. What is fluoridation and defluoridation ? discuss.

8. What are the various methods of distribution of water ? (8×5=40 Marks)
PART – B
Module I
9. Estimate the future population of a Town in 2011 using :
i) Arithmetical increase method
ii) Geometrical increase method
iii) Incremental increase method.

provided :

Year 1931 1941 1951 1961 1971 1981
. 20
Population in 44 55 75 100 125 140

thousands




OR P.T.O.


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10. a) What is a storage reservoir ?

b) The yield of water from a catchment area during every successive month is provided beneath :


Month J F M A M J J A S O N D

In flow in 1.4 2.1 2.8 8.4 11.9 11.9 7.7 2.8 2.52 2.24 1.96 1.68
million m3
(6+14)
Determine the minimum capacity of the storage reservoir.
Module II
11. What is Flocculation ? Design a clarriflocculator to treat 20 Mld of water for a
water treatment plant. 20
OR
12. Design a rapid sand filter, unit for treating six Mld of water with all its principal
components. 20
Module III
13. a) What is disinfection ? discuss chlorine as a disinfectant.
b) define Zeolite process of softening water with figure. (10+10)
OR

14. a) discuss hardy cross method of solving network of pipes by balancing heads by correcting flows. Derive an expression to obtain the correction of the presumed flow.

b) elaborate the appurtenances used in the distribution system ? discuss any two.

(12+8)


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