Rr420103 Industrial Waste And Waste Water Management

Set No. 1

Code No: RR420103

IV B.Tech II Semester Supplimentary Examinations, May 2008 INDUSTRIAL WASTE AND WASTE WATER MANAGEMENT (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) How will you detect the presence of iron and manganese? (b) Tabulate the water quality requirements for Cooling water.

[8+8]

2. (a) Enumerate the basic theories of Industrial wastewater management and explain the proportioning. (b) What is Equalisation? List and explain any four methods of the Equalisation in industrial wastewater. [8+8] 3. Design an aerated Grit chamber for treatment of composite municipal and industrial waste with average flow of 1 MLD. Assume all other necessary data. [16] 4. A wastewater effluent of 600 l/s with a BOD = 60 mg/l, DO = 2.5 mg/l and temperature of 250 C enters a river where the flow is 30 m3 /sec and BOD = 3 mg/l, DO = 8.5 mg/l and temperature of 160 C. Deoxygenation constant for the waste is 0.10 per day at 200 C. The velocity of water in the river downstream is 0.15 m/s and depth of flow is 1.5 m. Determine the following after mixing of wastewater with the river water: (a) (b) (c) (d)

Combined discharge BOD DO, and Temperature.

[16]

5. What are the advantages of recirculation of industrial wastes and use of treated municipal waste water in industries? Explain in detail. [16] 6. Give the characteristics and treatment of the waste generated in the following industries (a) Textile (b) Tannery

[16]

7. (a) Write a detailed note on treat ability of Distilleries wastewater. (b) What are fertilizer plant wastes? Suggest suitable method for disposal of the same. [16] 8. Write about generation of waste water, its characteristics and suggest suitable treatment for steel plant wastewater. [16] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 2

Code No: RR420103

IV B.Tech II Semester Supplimentary Examinations, May 2008 INDUSTRIAL WASTE AND WASTE WATER MANAGEMENT (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) How will you detect the presence of iron and manganese? (b) Tabulate the water quality requirements for Cooling water.

[8+8]

2. (a) Enumerate the basic theories of Industrial wastewater management and explain the proportioning. (b) What is Equalisation? List and explain any four methods of the Equalisation in industrial wastewater. [8+8] 3. Enumerate the various processes involved in tertiary treatment of industrial waste and describe any one of them. [16] 4. A wastewater effluent of 600 l/s with a BOD = 60 mg/l, DO = 2.5 mg/l and temperature of 250 C enters a river where the flow is 30 m3 /sec and BOD = 3 mg/l, DO = 8.5 mg/l and temperature of 160 C. Deoxygenation constant for the waste is 0.10 per day at 200 C. The velocity of water in the river downstream is 0.15 m/s and depth of flow is 1.5 m. Determine the following after mixing of wastewater with the river water: (a) Combined discharge (b) BOD (c) DO, and (d) Temperature.

[16]

5. (a) Write a detailed note on reuse of industrial waste water. (b) Write a note an Economics of industrial waste water treatment.

[8+8]

6. What different operations are carried out in paper and pulp industry? Also give the following information in detail of the same industry. (a) Waste water characteristics (b) by product recoveries (c) Treatment methods.

[16]

7. Give the characteristics and treatment of the waste generated in the following industries (a) Fertilizer plant

1 of 2

Set No. 2

Code No: RR420103 (b) Distilleries

[16]

8. Write about generation of waste water, its characteristics and suggest suitable treatment for steel plant wastewater. [16] ⋆⋆⋆⋆⋆

2 of 2

Set No. 3

Code No: RR420103

IV B.Tech II Semester Supplimentary Examinations, May 2008 INDUSTRIAL WASTE AND WASTE WATER MANAGEMENT (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Describe the method of the removal of colour, odour and taste from Water. (b) Tabulate the water quality requirements for Boiler water.

[8+8]

2. (a) Enumerate the basic theories of Industrial wastewater management and explain the strength reduction. (b) What is volume reduction? List and explain any four methods of the volume reduction in industrial wastewater. [8+8] 3. Design an aerated Grit chamber for treatment of composite municipal and industrial waste with average flow of 1 MLD. Assume all other necessary data. [16] 4. What do you understand by self-purification property of a stream? Explain the factors affecting this property. [16] 5. (a) Write a detailed note on reuse of industrial waste water. (b) Write a note an Economics of industrial waste water treatment.

[8+8]

6. What different operations are carried out in paper and pulp industry? Also give the following information in detail of the same industry. (a) Waste water characteristics (b) by product recoveries (c) Treatment methods.

[16]

7. What different operations are carried out in fertilizer plant? Also give the following information in detail o the same industry. (a) Waste water characteristics (b) byproduct recoveries (c) Treatment methods.

[16]

8. Give the characteristics and treatment of the waste generated in the following industries. (a) steel plants. (b) Oil refineries.

[16] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 4

Code No: RR420103

IV B.Tech II Semester Supplimentary Examinations, May 2008 INDUSTRIAL WASTE AND WASTE WATER MANAGEMENT (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) How will you detect the presence of iron and manganese? (b) Tabulate the water quality requirements for Cooling water.

[8+8]

2. (a) What is strength reduction? List and explain any four methods of the strength reduction in industrial wastewater. (b) What is the necessity of Neutralization in Industrial waste treatment? Explain the working of the same with suitable examples. [8+8] 3. (a) Write a note on effect of Industrial pollutants on sewage treatment. (b) Write a detailed note on Importance and necessity of Common Effluent Treatment Plant. [8+8] 4. A city discharges 1.25 m3 /S of wastewater into a stream whose minimum rate of flow is 8 m3 /S. The velocity of stream is 0.8 m/s. The temperature of the wastewater is 200 C and that of the stream is 2.0 mg/l. The wastewater contains no dissolved oxygen but the stream is 90 percent saturated upstream of the discharge. At 200 C, K’ is estimated to be 0.3 per day and R is 0.9 per day. Determine the criticaloxygen deficit and its location. Also, estimate the 200 C BOD5 of a sample taken at the critical point. Use temperature coefficients of 1.135 for K’ and 1.024 for R’. Also, plot the dissolved-oxygen-Sag curve. Given: saturation concentration at 150 C = 10.15 mg/l. [16] 5. (a) Write a detailed note on reuse of industrial waste water. (b) Write a note an Economics of industrial waste water treatment.

[8+8]

6. What different operations are carried out in paper and pulp industry? Also give the following information in detail of the same industry. (a) Waste water characteristics (b) by product recoveries (c) Treatment methods.

[16]

7. Write in detail about generation of waste water, its characteristics and suggest suitable treatment for distilleries waste water. [16] 8. What different operations are carried out in oil refinery? Also give the following information in detail of the same industry. (a) Waste water characteristics 1 of 2

Set No. 4

Code No: RR420103 (b) byproduct recoveries (c) Treatment methods.

[16] ⋆⋆⋆⋆⋆

2 of 2