Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 5th Sem New 2151303 Physico Chemical Treatment Technologies Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2151303 Date: 06/06/2019
Subject Name: Physico - Chemical Treatment Technologies
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain the procedure for statistical analysis of wastewater flowrate
data.
03
(b) Why are screens necessary before the treatment of wastewater? How
are they classified?
04
(c) Draw a neat sketch of conventional water treatment plant and explain
the function of each unit.
07
Q.2 (a) Explain the concept of ?Break point Chlorination?. 03
(b) Enlist the different types of mixing equipments and explain any one
with sketch.
04
(c) Explain the jar test procedure for determining the optimum dose of
chemical coagulant. What is the relationship between pH, Alkalinity
and the alum dose.
07
OR
(c) Define physical characteristics of water and wastewater. Enlist and
explain all the physical parameters along with their sources and effects.
07
Q.3 (a) Enlist and explain the factors affecting the process of chlorination. 03
(b) Write a short note on Aerated Grit Chamber. 04
(c) Derive the Stokes law for finding the terminal settling velocity of
discrete particles. Which relationship will be used if the type of flow is
turbulent flow?
07
OR
Q.3 (a) Write a short note on ?Filter backwashing?. 03
(b) Enlist and explain the mechanisms by which the colloids are stabilized. 04
(c) Explain the four types of settling phenomena in water and wastewater
treatment. Explain clearly the difference between them.
07
Q.4 (a) What are the advantages of dual media filters as compared to single
media filters?
03
(b) Explain the coagulation theory for removal of colloids. 04
(c) Prepare a list of different types of chemical coagulants and explain any
two along with chemical reactions.
07
OR
Q.4 (a) Write a note on ?Operational difficulties of RSF?. 03
(b) Enlist and explain the mechanisms of filtration in a Rapid Sand filter. 04
(c) Draw a neat sketch of Rapid Sand Filter and explain its construction
and working.
07
Q.5 (a) What are the functions of under drainage systems? 03
(b) Describe the methods normally used to process the sludge before its
final disposal.
04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2151303 Date: 06/06/2019
Subject Name: Physico - Chemical Treatment Technologies
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain the procedure for statistical analysis of wastewater flowrate
data.
03
(b) Why are screens necessary before the treatment of wastewater? How
are they classified?
04
(c) Draw a neat sketch of conventional water treatment plant and explain
the function of each unit.
07
Q.2 (a) Explain the concept of ?Break point Chlorination?. 03
(b) Enlist the different types of mixing equipments and explain any one
with sketch.
04
(c) Explain the jar test procedure for determining the optimum dose of
chemical coagulant. What is the relationship between pH, Alkalinity
and the alum dose.
07
OR
(c) Define physical characteristics of water and wastewater. Enlist and
explain all the physical parameters along with their sources and effects.
07
Q.3 (a) Enlist and explain the factors affecting the process of chlorination. 03
(b) Write a short note on Aerated Grit Chamber. 04
(c) Derive the Stokes law for finding the terminal settling velocity of
discrete particles. Which relationship will be used if the type of flow is
turbulent flow?
07
OR
Q.3 (a) Write a short note on ?Filter backwashing?. 03
(b) Enlist and explain the mechanisms by which the colloids are stabilized. 04
(c) Explain the four types of settling phenomena in water and wastewater
treatment. Explain clearly the difference between them.
07
Q.4 (a) What are the advantages of dual media filters as compared to single
media filters?
03
(b) Explain the coagulation theory for removal of colloids. 04
(c) Prepare a list of different types of chemical coagulants and explain any
two along with chemical reactions.
07
OR
Q.4 (a) Write a note on ?Operational difficulties of RSF?. 03
(b) Enlist and explain the mechanisms of filtration in a Rapid Sand filter. 04
(c) Draw a neat sketch of Rapid Sand Filter and explain its construction
and working.
07
Q.5 (a) What are the functions of under drainage systems? 03
(b) Describe the methods normally used to process the sludge before its
final disposal.
04
2
(c) Describe the usual sources of sludge and the characteristics of sludge
generated in a conventional wastewater treatment plant.
07
OR
Q.5 (a) Discuss the objectives of treatment of sludge. 03
(b) Explain sludge thickening. 04
(c) Specify the significance of the Volume-Weight relationship of the
sludge in design of sludge handling facility.
07
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This post was last modified on 20 February 2020