۸ 00000CH301121904 Pages: 2

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Fifth Semester B.Tech Degree Regular and Supplementary Examination December 2020

Course Code: CH301
Course Name: ENVIRONMENTAL ENGINEERING

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Explain precipitation processes in water treatment. (7)
b) What are the various constituents in wastewater and their effects? (3)
c) Explain any two methods for determining the total solids present in a given 5)
(
sample of wastewater.
2 a) What are the methods for treatment of boiler feed water treatment? Explain. (7)
b) Write a note on various physical characteristics of wastewater. (8)
3 ஐ Explain with neat sketch, any three methods for desalination. (7)
b) Explain ‘most probable number’ and how will you determine the most probable (8)
number of bacteria in a given sample?
PART ‏تا‎
‎Answer any two full questions, each carries 20 marks.
4 a) Explain the working of grit chambers. What are the factors to be considered in 6)
the design of a grit chamber?
b) Explain the mechanism of an anaerobic process. (4)
c) Describe any three methods for sludge thickening with neat figure. (10)

5 a) Witha neat sketch explain the working of ೩ 1) Clariflocculator 11) Trickling filter (10)

b) Explain various treatment methods for hazardous waste. (5)
€) Write a note on sludge lagooning. (5)
6 a) With a neat sketch explain the working of upflow anaerobic sludge blanket (10)
reactor. Also compare anaerobic and aerobic process for wastewater treatment.
b) Explain treatment of fertilizer industry waste with a neat sketch. (10)
PART C
Answer any two full questions, each carries 15 marks.
7 ഒ) What 15 meant by atmospheric dispersion and air pollution meterology? (3)
b) What are primary and secondary air pollutants? Write a note on effects of air 5)

pollutants.

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