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49123 Waste and Pollution Management

Question

Answered

Question:

Question 1 (16 points)

What are the 4 different pollutants in domestic wastewater (sewage). Name the methods by which each of these pollutants can be treated before disposal into waterways. 

Question 2 (20 marks)

a) What are the major pollutant parameters in (i) storm water, (ii) thermal power plant effluent and (iii) construction site? (6 points)  

b) Compare the solids and bacterial concentrations allowed in the (i) treated sewage effluent and (ii) drinking water (8 points)  

c) How is microorganisms measured in sewage? (6 points)  

Question 3 (18 marks)

a) What are the different forms of N and P present in the sewage? What are their typical values? (6 points)  

b) Describe briefly the two ways phosphorus are removed from sewage in a wastewater treatment plant (6 points)  

c) Describe briefly the two ways N are removed from sewage in a wastewater treatment plant? (6 points)  

Question 4 (14 points)

a) What is the significance of the ratio of BOD5/COD (6 points)  

b) What are the pollutant removal mechanisms in an intermittently decanted aerated lagoons (IDEAL) used in wastewater treatment plant.
(8 points)  

Question 5 (18 marks)

a) Why is it important to have dewatering of digested sludge? (6 points)  

b) What are the beneficial uses of biosolids? (6 points)  

c) A sludge of 1000 m3 is to be dewatered by centrifuge. If the solid content of sludges before and after dewatering is 0.5% (volume/volume) and 10% (volume/volume), calculate the amount of water removed by this process. (6 points)  

Question 6 (14 marks)

a) What is the advantage of dual media filter over sand filter? (6 points)  

b) Design a filtration unit for a flow of 5x103L/d.  Assume a filtration velocity of 0.2 m/h. (8 points) 

49123 Waste and Pollution Management

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Tellus molestie nunc non blandit massa enim nec dui. Tellus molestie nunc non blandit massa enim nec dui. Ac tortor vitae purus faucibus ornare suspendisse sed nisi. Pharetra et ultrices neque ornare aenean euismod. Pretium viverra suspendisse potenti nullam ac tortor vitae. Morbi quis commodo odio aenean sed. At consectetur lorem donec massa sapien faucibus et. Nisi quis eleifend quam adipiscing vitae proin sagittis nisl rhoncus. Duis at tellus at urna condimentum mattis pellentesque. Vivamus at augue eget arcu dictum varius duis at. Justo donec enim diam vulputate ut. Blandit libero volutpat sed cras ornare arcu. Ac felis donec et odio pellentesque diam volutpat commodo. Convallis a cras semper auctor neque. Tempus iaculis urna id volutpat lacus. Tortor consequat id porta nibh.

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So you have to complete the digram the way it is by adding the plate boundaries and the oceanic crust, the thickness of the lithosphere and how they are meeting. you have to draw the digram and then upload it. We did draw out some information for your help its just you need to edit. Like where are t ...

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