Code No: R05320102
R05
Set No. 2
in
III B.Tech II Semester Examinations,APRIL 2011 ENVIRONMENTAL ENGG.-I Civil Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Describe in brief various unit operations for chemical clarification along with the design recommendations.
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(b) What do you understand by secondary treatment (or biological treatment) of wastewater? Enumerate various treatment techniques used for biological treatment. [8+8]
or
2. (a) If 50 cu.m./day of canal water of pH P 3.5 and Chloride concentration 50 ppm P 9.75 and Chloride 125 is mixed with 1500 cu.m./day of a stream water of pH P and Chloride in the mixture. ppm, find the pH
(b) Give the Desirable and Maximum permissible standards as per IS 10500 for any EIGHT parameters in Drinking water. [16]
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3. Design rapid gravity filters including the drainage system for treating 5 mld of water. Assume the necessary data required. [16] 4. (a) Write a brief note on the use of sewage effluent for irrigation.
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(b) A town with a population of 25,000 is to be provided with a sewage treatment plant to handle both its industrial as well as domestic wastes. A sanitary survey has revealed the following facts: Dairy wastes of 2.7 × 108 litre/day with BOD of 1200 mg/l and sugar mill waste of 2.2 × 106 litre/day with B.O.D. of 800 mg/l are produced. In addition, domestic sewage is produced at the rate of 200 litres/capita/day, the per capita BOD of sewage being 76 gm/day. An expansion factor of 10% is to be provided. The effluent from the treatment plant is to be discharged into a stream with a minimum flow 7000 liters/sec and a dissolved oxygen content of 8 mg/l. It is necessary to maintain a D.O. content of 4.0 mg/l. find the degree of treatment required for the plant. [8+8]
5. (a) Find the monthly requirement of Alum if dosage required is 80 mg/l, tp process 15 MLD of water. Assume all the necessary data. (b) Describe the procedure of conducting Jar Test, hence the significance of the test. [8+8]
6. (a) What is a hydraulically balanced network? What is the sum of the head loss around a balanced pipe loop?
1
Code No: R05320102
R05
Set No. 2
(b) A storage reservoir is situated at a distance of 6 km from a city of 3 lakh population. The total loss of head from the source to the city is not to exceed 20 m. Taking the daily demand of 200 litr/capita/day , pumping is to be done for 12 hours only, determine the size of supply main by
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i. Darcy-Weisbach formula taking coefficient of friction as 0.015 ii. Hazen-Williams formula, taking C=130. Assume minor losses equal to 10V2 /2g. [8+8] 7. Compare the quality and quantity of various Ground and Surface water sources. [16]
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8. (a) Explain the mechanism of anaerobic digestion.
(b) Mention the advantages and disadvantages of oxidation pond.
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or
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2
[8+8]
Code No: R05320102
R05
Set No. 4
1. (a) Explain the mechanism of anaerobic digestion.
[8+8]
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(b) Mention the advantages and disadvantages of oxidation pond.
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III B.Tech II Semester Examinations,APRIL 2011 ENVIRONMENTAL ENGG.-I Civil Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
2. (a) What is a hydraulically balanced network? What is the sum of the head loss around a balanced pipe loop?
or
(b) A storage reservoir is situated at a distance of 6 km from a city of 3 lakh population. The total loss of head from the source to the city is not to exceed 20 m. Taking the daily demand of 200 litr/capita/day , pumping is to be done for 12 hours only, determine the size of supply main by i. Darcy-Weisbach formula taking coefficient of friction as 0.015 ii. Hazen-Williams formula, taking C=130. Assume minor losses equal to 10V2 /2g. [8+8]
uW
P 3.5 and Chloride concentration 50 ppm 3. (a) If 50 cu.m./day of canal water of pH P 9.75 and Chloride 125 is mixed with 1500 cu.m./day of a stream water of pH ppm, find the pH P and Chloride in the mixture. (b) Give the Desirable and Maximum permissible standards as per IS 10500 for any EIGHT parameters in Drinking water. [16] 4. Compare the quality and quantity of various Ground and Surface water sources. [16]
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5. (a) Describe in brief various unit operations for chemical clarification along with the design recommendations.
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(b) What do you understand by secondary treatment (or biological treatment) of wastewater? Enumerate various treatment techniques used for biological treatment. [8+8]
6. (a) Find the monthly requirement of Alum if dosage required is 80 mg/l, tp process 15 MLD of water. Assume all the necessary data. (b) Describe the procedure of conducting Jar Test, hence the significance of the test. [8+8]
7. (a) Write a brief note on the use of sewage effluent for irrigation.
3
Code No: R05320102
R05
Set No. 4
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(b) A town with a population of 25,000 is to be provided with a sewage treatment plant to handle both its industrial as well as domestic wastes. A sanitary survey has revealed the following facts: Dairy wastes of 2.7 × 108 litre/day with BOD of 1200 mg/l and sugar mill waste of 2.2 × 106 litre/day with B.O.D. of 800 mg/l are produced. In addition, domestic sewage is produced at the rate of 200 litres/capita/day, the per capita BOD of sewage being 76 gm/day. An expansion factor of 10% is to be provided. The effluent from the treatment plant is to be discharged into a stream with a minimum flow 7000 liters/sec and a dissolved oxygen content of 8 mg/l. It is necessary to maintain a D.O. content of 4.0 mg/l. find the degree of treatment required for the plant. [8+8]
8. Design rapid gravity filters including the drainage system for treating 5 mld of water. Assume the necessary data required. [16]
Aj
nt
uW
or
?????
4
Code No: R05320102
R05
Set No. 1
in
III B.Tech II Semester Examinations,APRIL 2011 ENVIRONMENTAL ENGG.-I Civil Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Describe in brief various unit operations for chemical clarification along with the design recommendations.
ld .
(b) What do you understand by secondary treatment (or biological treatment) of wastewater? Enumerate various treatment techniques used for biological treatment. [8+8] 2. (a) Write a brief note on the use of sewage effluent for irrigation.
uW
or
(b) A town with a population of 25,000 is to be provided with a sewage treatment plant to handle both its industrial as well as domestic wastes. A sanitary survey has revealed the following facts: Dairy wastes of 2.7 × 108 litre/day with BOD of 1200 mg/l and sugar mill waste of 2.2 × 106 litre/day with B.O.D. of 800 mg/l are produced. In addition, domestic sewage is produced at the rate of 200 litres/capita/day, the per capita BOD of sewage being 76 gm/day. An expansion factor of 10% is to be provided. The effluent from the treatment plant is to be discharged into a stream with a minimum flow 7000 liters/sec and a dissolved oxygen content of 8 mg/l. It is necessary to maintain a D.O. content of 4.0 mg/l. find the degree of treatment required for the plant. [8+8] 3. (a) If 50 cu.m./day of canal water of P pH 3.5 and Chloride concentration 50 ppm P 9.75 and Chloride 125 is mixed with 1500 cu.m./day of a stream water of pH P and Chloride in the mixture. ppm, find the pH
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(b) Give the Desirable and Maximum permissible standards as per IS 10500 for any EIGHT parameters in Drinking water. [16]
Aj
4. (a) What is a hydraulically balanced network? What is the sum of the head loss around a balanced pipe loop? (b) A storage reservoir is situated at a distance of 6 km from a city of 3 lakh population. The total loss of head from the source to the city is not to exceed 20 m. Taking the daily demand of 200 litr/capita/day , pumping is to be done for 12 hours only, determine the size of supply main by i. Darcy-Weisbach formula taking coefficient of friction as 0.015 ii. Hazen-Williams formula, taking C=130. Assume minor losses equal to 10V2 /2g. [8+8]
5. (a) Find the monthly requirement of Alum if dosage required is 80 mg/l, tp process 15 MLD of water. Assume all the necessary data. 5
Code No: R05320102
R05
Set No. 1
(b) Describe the procedure of conducting Jar Test, hence the significance of the test. [8+8]
7. (a) Explain the mechanism of anaerobic digestion. (b) Mention the advantages and disadvantages of oxidation pond.
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6. Compare the quality and quantity of various Ground and Surface water sources. [16]
[8+8]
Aj
nt
uW
or
?????
ld .
8. Design rapid gravity filters including the drainage system for treating 5 mld of water. Assume the necessary data required. [16]
6
Code No: R05320102
R05
Set No. 3
in
III B.Tech II Semester Examinations,APRIL 2011 ENVIRONMENTAL ENGG.-I Civil Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Compare the quality and quantity of various Ground and Surface water sources. [16]
ld .
2. (a) What is a hydraulically balanced network? What is the sum of the head loss around a balanced pipe loop?
or
(b) A storage reservoir is situated at a distance of 6 km from a city of 3 lakh population. The total loss of head from the source to the city is not to exceed 20 m. Taking the daily demand of 200 litr/capita/day , pumping is to be done for 12 hours only, determine the size of supply main by i. Darcy-Weisbach formula taking coefficient of friction as 0.015 ii. Hazen-Williams formula, taking C=130. Assume minor losses equal to 10V2 /2g. [8+8]
uW
3. Design rapid gravity filters including the drainage system for treating 5 mld of water. Assume the necessary data required. [16]
P 3.5 and Chloride concentration 50 ppm 4. (a) If 50 cu.m./day of canal water of pH P 9.75 and Chloride 125 is mixed with 1500 cu.m./day of a stream water of pH P and Chloride in the mixture. ppm, find the pH (b) Give the Desirable and Maximum permissible standards as per IS 10500 for any EIGHT parameters in Drinking water. [16]
nt
5. (a) Find the monthly requirement of Alum if dosage required is 80 mg/l, tp process 15 MLD of water. Assume all the necessary data.
Aj
(b) Describe the procedure of conducting Jar Test, hence the significance of the test. [8+8]
6. (a) Write a brief note on the use of sewage effluent for irrigation. (b) A town with a population of 25,000 is to be provided with a sewage treatment plant to handle both its industrial as well as domestic wastes. A sanitary survey has revealed the following facts: Dairy wastes of 2.7 × 108 litre/day with BOD of 1200 mg/l and sugar mill waste of 2.2 × 106 litre/day with B.O.D. of 800 mg/l are produced. In addition, domestic sewage is produced at the rate of 200 litres/capita/day, the per capita BOD of sewage being 76 gm/day. An expansion factor of 10% is to be provided. The effluent from the treatment plant is to be discharged into a stream with a 7
Code No: R05320102
R05
Set No. 3
minimum flow 7000 liters/sec and a dissolved oxygen content of 8 mg/l. It is necessary to maintain a D.O. content of 4.0 mg/l. find the degree of treatment required for the plant. [8+8] 7. (a) Explain the mechanism of anaerobic digestion. (b) Mention the advantages and disadvantages of oxidation pond.
[8+8]
in
8. (a) Describe in brief various unit operations for chemical clarification along with the design recommendations.
Aj
nt
uW
or
?????
ld .
(b) What do you understand by secondary treatment (or biological treatment) of wastewater? Enumerate various treatment techniques used for biological treatment. [8+8]
8
