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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI(NEW) - EXAMINATION - SUMMER 2019
Subject Code:2160604 Date:18/05/2019
Subject Name:Water & Waste Water Engineering
Time:10:30 AM TO 01:00 PM Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) Enlist different methods used for population forecast. 03
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(b) What is Intake Structure? Give classification of the intake structure. 04(c) Explain the different factors affecting the per capita water demand. 07
Q.2 (a) What are the objectives of water treatment? 03
(b) Design a intake well for a flow of 0.1 m3/sec. 04
(c) Give the classification of different types of pumps used in water supply. 07
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OR
(c) The following data have been noted from the census department. 07
Year 1981 1991 2001 2011
Population 16000 24000 34000 47000
Calculate the probable population for the year 2031 and 2041 by arithmetical increase method and geometrical increase method.
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Q.3 (a) Enlist different component of water supply scheme. 03
(b) Explain different types of coagulant used for water treatment. 04
(c) What is Aeration? What are the objectives of providing the aeration in water treatment? 07
OR
Q.3 (a) Define: (1) Sedimentation (2) Plain Sedimentation (3) Coagulation. 03
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(b) Why Grit chambers are provided in wastewater treatment plants? 04(c) Draw a layout of a complete water-treatment plant. 07
Q.4 (a) What are the requirements of a good distribution system? 03
(b) Enlist various types of screens and describe coarse screens. 04
(c) What is a distribution system? State the function of the distribution system. 07
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OR
Q.4 (a) Write short note on: Septic tank 03
(b) Write short note on: Grid Iron system 04
(c) Draw a complete flow diagram of wastewater treatment plant and describe the function of its each unit. 07
Q.5 (a) Explain COD test. 03
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(b) Explain Nitrification. 04(c) Write short note on: Trickling filter 07
OR
Q.5 (a) Discuss diffused aeration system. 03
(b) State the importance of equalization basin. 04
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(c) What is meant by sludge digestion? Explain in details. 07--- Content provided by FirstRanker.com ---
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