Code.No: 25004

RR

SET-1

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD III.B.TECH - I SEMESTER SUPPLEMENTARY EXAMINATIONS NOVEMBER, 2009 ENVIRONMENTAL ENGINEERING – I (CIVIL ENGINEERING) Time: 3hours Max.Marks:80 Answer any FIVE questions All questions carry equal marks --1.a) What is design period? Explain the drinking water standards. b) What is infiltration gallery? Explain hardy cross method of water distribution network. [8+8]

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2.a) Explain the fundamental principles of House Plumbing. b) What are the various systems of sanitation? Explain their advantages and disadvantages. [8+8] 3.a)

Draw typical layout of water treatment plant. State the various treatment units to be adopted and their function. b) What is difference between coagulation and Flocculation? Explain the chemical reaction of alum coagulant with turbid water. [8+8]

4.a) Explain the theory of filtration. b) Differentiate between slow sand filter and Rapid sand filter.

[8+8]

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5.a) What is biological treatment? Explain principle, construction and operation of oxidation pond. b) Design a septic tank for 60 uses. Make suitable assumptions and Justify. [8+8] 6. Explain the construction, operation and design consideration of a high rate trickling filters. [16]

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7. Water works of a town is provided with a sedimentation tank of size 50mX20mX30m. If 80mg/l of suspended solids are present in water and 75% of which are removed in the basin, determine the following parameters of 5X106 letres is treated daily a) Detention time b) Average velocity through tank c) Over flow rate d) Weight of settled solids if their density is 2 and specific weight is 2000 kg/m3. [4+4+4+4] 8. Write short notes on any three of the following? a) Sludge digestion process b) Screen chamber c) Joints and valves d) Sewage farming. e) Operation troubles in Rapid sand filters. [16] *****

Code.No: 25004

RR

SET-2

1.a)

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD III.B.TECH - I SEMESTER SUPPLEMENTARY EXAMINATIONS NOVEMBER, 2009 ENVIRONMENTAL ENGINEERING – I (CIVIL ENGINEERING) Time: 3hours Max.Marks:80 Answer any FIVE questions All questions carry equal marks --Draw typical layout of water treatment plant. State the various treatment units to be adopted and their function. b) What is difference between coagulation and Flocculation? Explain the chemical reaction of alum coagulant with turbid water. [8+8]

or ld

2.a) Explain the theory of filtration. b) Differentiate between slow sand filter and Rapid sand filter.

[8+8]

3.a) What is biological treatment? Explain principle, construction and operation of oxidation pond. b) Design a septic tank for 60 uses. Make suitable assumptions and Justify. [8+8] 4. Explain the construction, operation and design consideration of a high rate trickling filters. [16]

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uW

5. Water works of a town is provided with a sedimentation tank of size 50mX20mX30m. If 80mg/l of suspended solids are present in water and 75% of which are removed in the basin, determine the following parameters of 5X106 letres is treated daily a) Detention time b) Average velocity through tank c) Over flow rate d) Weight of settled solids if their density is 2 and specific weight is 2000 kg/m3. [4+4+4+4] 6. Write short notes on any three of the following? a) Sludge digestion process b) Screen chamber c) Joints and valves d) Sewage farming. e) Operation troubles in Rapid sand filters. [16] What is design period? Explain the drinking water standards. What is infiltration gallery? Explain hardy cross method of water distribution network. [8+8]

Aj

7.a) b)

8.a) Explain the fundamental principles of House Plumbing. b) What are the various systems of sanitation? Explain their advantages and disadvantages. [8+8] *****

Code.No: 25004

RR

SET-3

.in

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD III.B.TECH - I SEMESTER SUPPLEMENTARY EXAMINATIONS NOVEMBER, 2009 ENVIRONMENTAL ENGINEERING – I (CIVIL ENGINEERING) Time: 3hours Max.Marks:80 Answer any FIVE questions All questions carry equal marks --1.a) What is biological treatment? Explain principle, construction and operation of oxidation pond. b) Design a septic tank for 60 uses. Make suitable assumptions and Justify. [8+8]

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2. Explain the construction, operation and design consideration of a high rate trickling filters. [16]

5.a) b)

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3. Water works of a town is provided with a sedimentation tank of size 50mX20mX30m. If 80mg/l of suspended solids are present in water and 75% of which are removed in the basin, determine the following parameters of 5X106 letres is treated daily a) Detention time b) Average velocity through tank c) Over flow rate d) Weight of settled solids if their density is 2 and specific weight is 2000 kg/m3. [4+4+4+4] 4. Write short notes on any three of the following? a) Sludge digestion process b) Screen chamber c) Joints and valves d) Sewage farming. e) Operation troubles in Rapid sand filters. [16] What is design period? Explain the drinking water standards. What is infiltration gallery? Explain hardy cross method of water distribution network. [8+8]

nt

6.a) Explain the fundamental principles of House Plumbing. b) What are the various systems of sanitation? Explain their advantages and disadvantages. [8+8] Draw typical layout of water treatment plant. State the various treatment units to be adopted and their function. b) What is difference between coagulation and Flocculation? Explain the chemical reaction of alum coagulant with turbid water. [8+8]

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7.a)

8.a) Explain the theory of filtration. b) Differentiate between slow sand filter and Rapid sand filter.

*****

[8+8]

Code.No: 25004

RR

SET-4

What is design period? Explain the drinking water standards. What is infiltration gallery? Explain hardy cross method of water distribution network. [8+8]

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3.a) b)

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.in

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD III.B.TECH - I SEMESTER SUPPLEMENTARY EXAMINATIONS NOVEMBER, 2009 ENVIRONMENTAL ENGINEERING – I (CIVIL ENGINEERING) Time: 3hours Max.Marks:80 Answer any FIVE questions All questions carry equal marks --1. Water works of a town is provided with a sedimentation tank of size 50mX20mX30m. If 80mg/l of suspended solids are present in water and 75% of which are removed in the basin, determine the following parameters of 5X106 letres is treated daily a) Detention time b) Average velocity through tank c) Over flow rate d) Weight of settled solids if their density is 2 and specific weight is 2000 kg/m3. [4+4+4+4] 2. Write short notes on any three of the following? a) Sludge digestion process b) Screen chamber c) Joints and valves d) Sewage farming. e) Operation troubles in Rapid sand filters. [16]

4.a) Explain the fundamental principles of House Plumbing. b) What are the various systems of sanitation? Explain their advantages and disadvantages. [8+8] Draw typical layout of water treatment plant. State the various treatment units to be adopted and their function. b) What is difference between coagulation and Flocculation? Explain the chemical reaction of alum coagulant with turbid water. [8+8]

nt

5.a)

6.a) Explain the theory of filtration. b) Differentiate between slow sand filter and Rapid sand filter.

[8+8]

Aj

7.a) What is biological treatment? Explain principle, construction and operation of oxidation pond. b) Design a septic tank for 60 uses. Make suitable assumptions and Justify. [8+8] 8. Explain the construction, operation and design consideration of a high rate trickling filters. [16] *****