Environmental Engineering - 1 : Question Paper May 2014 - Civil Engineering (Semester 6) | Mumbai University (MU)

Environmental Engineering - 1 - May 2014

Civil Engineering (Semester 6)

(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.
1 (1) Explain the importance of environmental sanitation.(4 marks) 1 (2) Explain food chain and food web in relation to ecology.(4 marks) 1 (3) Explain the principle of sedimentation.(4 marks) 1 (4) Define potable water and state different types of pollution.(4 marks) 1 (5) State the significance of residual chlorine in drinking water. Explain the test performed in the laboratory for determining residual chlorine.(4 marks) 2 (1) A rectangular tank with length of 15 m, width of 6 m and depth 3 m into treat 2.40 × 106 MLD. Calculate (1) Detention period of tank (2) Average flow velocity through tank (3) S.O.R.(10 marks) 2 (2) Briefly explain the different types of disinfectants used in water treatment stating the relative merits and situation where they are most suited.(10 marks) 3 (1) Draw the flow sheet showing sequence of various treatment units of a typical water treatment units of a typical water treatment plant with perennial river as the source of water. List these treatment units sequentially and state the function of each unit.(10 marks) 3 (2) Design a rapid sand filter to treat 2.25 MLD water supply for town. Given (i) filter works for 12 hours a day (ii) rate of filtration is 1250 MI/d/ha.(10 marks) 4 (1) Describe the operating problems of Rapid sand filter. Explain Negative head.(10 marks) 4 (2) How are impurities in water classified? What are their respective causes and their effects?(10 marks) 5 (1) Explain various methods to control leachate.(10 marks) 5 (2) Explain why chlorination is considered necessary even when filtration provided. Explain break point chlorination with diagram.(10 marks) 6 (1) Why are coagulants required in water treatment? What factors affect the dosage of coagulant?(10 marks) 6 (2) Define soft water. Write down the different methods of water softening. Explain a method of softening of water for industrial use.(10 marks)

Write any short notes on any four of the following

7 (1) Composting(5 marks) 7 (2) Hazardous waste.(5 marks) 7 (3) Iron and Manganese removal.(5 marks) 7 (4) Biochemical cyties.(5 marks) 7 (5) Fluoridation and de fluoridation.(5 marks)


Next up

Read More Questions

If you are looking for answer to specific questions, you can search them here. We'll find the best answer for you.


Study Full Subject

If you are looking for good study material, you can checkout our subjects. Hundreds of important topics are covered in them.

Know More