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Environmental Engineering - II (October 2010)

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Total No. of Questions : 12] P1300 [Total No. of Pages : 4 [3864]-102 B.E. (Civil) ENVIRONMENTAL ENGINEERING - II (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) 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. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) Q2) a) Differentiate between separate and combined sewerage system. [6] b) Determine the size of a circular sewer for a discharge of 600 lps running half full. Assume S = 0.0001 and n = 0.015. [6] c) Write a short note on Drop Manhole. [4] OR a) Explain how treatability index helps in deciding the type of treatment.[6] b) The BOD5 of a waste has been measured as 650 mg/l. The rate constant is 0.12. Determine ultimate BOD and 3 day BOD at 27 C. [6] c) Define : [4] i) B.O.D. and ii) COD Q3) a) Discuss the following zones of a stream which is undergoing self purification. [6] i) Zone of degradation. ii) Zone of active decomposition. iii) Zone of recovery. iv) Zone of clear water. P.T.O.

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Additional Info : 2003 Course
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