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Environmental Engineering - II (April 2010)

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Total No. of Questions : 12] [Total No. of Pages : 4 [3764]-102 P1463 B.E. (Civil) ENVIRONMENTAL ENGINEERING - II (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to 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) a) b) Explain giving reasons, when to adopt separate and combined systems.[6] Design a sanitary sewer for following data: i) Population = 120000 persons. ii) [6] Rate of water supply = 200 Lpcd. iii) Value of N = 0.013. iv) Peak factor = 3. v) c) Slope = 1 in 700. Differentiate Dry Weather Flow and Wet Weather Flow. [4] OR Q2) a) Describe the procedure for laying and testing of sewers. [6] b) The BOD5 of a waste has been measured as 500 mg/l. The rate constant is 0.12. Determine ultimate BOD and 3 day BOD at 27 C. [6] c) Explain the necessity of DO fixation while determining DO in water and state procedure for the same. [4] P.T.O.

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Additional Info : April 2010 Examination - Environmental Engineering - II (2003 Course)
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