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Ich2304:Waste Management Question Paper

Ich2304:Waste Management

Course:Bachelor Of Science In Public Health

Institution: Meru University Of Science And Technology question papers

Exam Year:2012

INSTRUCTIONS: Answer question one and any other two questions
QUESTION ONE (30 MARKS)
a) Explain what is meant by the following terms;
(i) Waste water (1 mark)
(ii) Industrial liquid wastes (1 mark)
(iii) Strength of sewage ( 1mark)
(iv) Flow equalization (1 mark)
b) Briefly explain the three stages of sewage treatment (3 marks)
c) What is sewage treatment (3 marks)
d) Enumerate four (4) advantages of waste stabilization ponds in liquid wastes management
(4 marks)
e) What roles do plants play in a reed bed? (3 marks)
f) What is the difference between percolating filters and activated sludge processes?
(4 marks)
g) What hazards are associated with disposal of raw sewage and sludge? (4 marks)
h) Explain how waste water can be recycled (5 marks)
2
QUESTION TWO (20 MARKS)
Discuss pretreatment activities in a waste water treatment plant
QUESTION THREE (20 MARKS)
Explain in detail, the options you would recommend for sewage treatment in a college with four
thousand students
QUESTION FOUR (20 MARKS)
A medical training college has three thousand students who produce 50 litres of waste water per
capita per day. The retention period of the waste water is four hours. Calculate the volume of a
trickling filter that can treat the wastes.
Take t=
Q
V
as the formular
Where t= time in days
V= volume of the filter
Q= amount of waste water per day

Ich2304:Waste Management Question Paper

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