GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
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Seat No.:
Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VIII (New) EXAMINATION — WINTER 2019
Subject Name: Advanced Wastewater Treatment Technologies
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
(b) Highlight the need of advanced wastewater treatment technologies in environmental engineering field. 04
(c) What is membrane fouling? Explain different fouling phenomenon with sketches. 07
Q.2 (a) Define (i) flux (ii) transmembrane pressure (iii) product water 03
(c) Compare spiral wound membrane and tube membrane 07
OR
(c) Compare Hollow fiber and plate & frame membrane. 07
(b) Enlist benefits and limitations of MBR. 04
(c) Explain the microbiology involved in biological process of phosphorous removal. 07
OR
(a) Explain micro-porous membrane and thin composite membrane. 03
(c) Enlist chemical methods of phosphorous removal and explain any one method with equations and the process configurations. 07
Q.4 (a) Enlist three different types of electro-oxidation mechanism and explain any one in brief. 03
(b) Write a note on electro-flotation technique of removing sediments. 04
OR
(a) Differentiate between electro-coagulation and chemical coagulation. (give at least 3 points) 03
(b) Enlist advanced oxidation processes in which ozone is used. Explain any one with equations. 04
(c) Highlight applications of ion exchange in wastewater treatment. 07
Date: 21/11/2019
Total Marks: 70
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Q.5 (a) Enlist photochemical advanced oxidation processes. Explain any one in brief. 03
(b) Explain modes of operation of MBR. 04
Carbon dose, mg 100 668 512 393 313 238 0
Residual Conc, mg/L 71 70 931 166 122 628 250
OR
(b) Explain the treatment process of wastewater with powdered activated carbon. 04
(c) Explain Membrane cleaning mechanisms. 07
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Seat No.:
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Subject Code: 2181308Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VIII (New) EXAMINATION — WINTER 2019
Subject Name: Advanced Wastewater Treatment Technologies
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Time: 02:30 PM TO 05:00 PMInstructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
Q.1 (a) Explain application of Microfiltration and Reverse osmosis. 03(b) Highlight the need of advanced wastewater treatment technologies in environmental engineering field. 04
(c) What is membrane fouling? Explain different fouling phenomenon with sketches. 07
Q.2 (a) Define (i) flux (ii) transmembrane pressure (iii) product water 03
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(b) Write a short note on membrane material. 04(c) Compare spiral wound membrane and tube membrane 07
OR
(c) Compare Hollow fiber and plate & frame membrane. 07
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Q.3 (a) Explain types of membrane Bioreactor with figure. 03(b) Enlist benefits and limitations of MBR. 04
(c) Explain the microbiology involved in biological process of phosphorous removal. 07
OR
(a) Explain micro-porous membrane and thin composite membrane. 03
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(b) Explain Nitrification along with chemical reaction. 04(c) Enlist chemical methods of phosphorous removal and explain any one method with equations and the process configurations. 07
Q.4 (a) Enlist three different types of electro-oxidation mechanism and explain any one in brief. 03
(b) Write a note on electro-flotation technique of removing sediments. 04
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(c) Explain the Fenton’s process for wastewater treatment along with equations. 07OR
(a) Differentiate between electro-coagulation and chemical coagulation. (give at least 3 points) 03
(b) Enlist advanced oxidation processes in which ozone is used. Explain any one with equations. 04
(c) Highlight applications of ion exchange in wastewater treatment. 07
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Date: 21/11/2019
Total Marks: 70
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Q.5 (a) Enlist photochemical advanced oxidation processes. Explain any one in brief. 03
(b) Explain modes of operation of MBR. 04
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(c) An adsorption study is set up in laboratory by adding a known amount of activated carbon to six flasks which contain 200 mL of an industrial waste. An additional flask containing 200 mL of waste but no carbon is run as a blank. Plot the Langmuir isotherm and determine the values of the constants. 07Carbon dose, mg 100 668 512 393 313 238 0
Residual Conc, mg/L 71 70 931 166 122 628 250
OR
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Q.5 (a) Define: (i) adsorption, (ii) adsorbent and (iii) adsorbate. 03(b) Explain the treatment process of wastewater with powdered activated carbon. 04
(c) Explain Membrane cleaning mechanisms. 07
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