Question Paper: Environmental Engineering 2 Question Paper - May 17 - Civil Engineering (Semester 7) - Mumbai University (MU)
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Environmental Engineering 2 - May 17

Civil Engineering (Semester 7)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question No.1 is compulsory.
(2) Attempt any three questions from remaining five questions.
(3) Draw the sketches if necessary.

1(a) Write a note on tertiary treatment of waste treatment.
(5 marks) 00

1(b) What is impact of BOD and pH in waste treatment.
(5 marks) 00

1(c) Define settling velocity, surface loading, detention period.
(5 marks) 00

1(d) Explain ventilation of sewers.
(5 marks) 00

2(a) Write a note on oxygen sag curve
(6 marks) 522

2(b) Explain the construction and working of sludge digester.
(8 marks) 3071

2(c) Write a detailed note on crown corrosion.
(6 marks) 00

3(a) The 5 day BOD of sewage sample is 170mg/l at 35$^o$C. Calculate it's 5 day 20c BOD. Take K20= 0.1
(6 marks) 2854

3(b) What are the effects of particulate matter on human body?
(6 marks) 00

3(c) Design a septic tank for a 100 people. Assume data necessary and mention same.
(8 marks) 1115

4(a) Determine the size of secondary and primary sendimentation tank for treating activated sludge of 10 mld flow.
(10 marks) 00

4(b) Explain operation and maintenance of tricking filter.
(6 marks) 523

4(c) Define Noise. State the method to measure and prevent noise in building.
(4 marks) 00

5(a) What is activated sludge. Explain types of aeration system used in the treatment process.
(8 marks) 3070

5(b) Explain the working of sludge Drying Beds.
(6 marks) 00

5(c) Write a short note on Aerated Lagoon.
(6 marks) 00

6(a) Explain types of sewers and sewer appurtenances.
(8 marks) 00

6(b) Explain working of grit chamber.
(6 marks) 582

6(c) Write a note on Drop Manhole
(6 marks) 1620

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