Explain the procedure for statistical analysis of wastewater flowrate data.
[3 marks]Why are screens necessary before the treatment of wastewater? How are they classified?
[4 marks]Draw a neat sketch of conventional water treatment plant and explain the function of each unit.
[7 marks]Explain the concept of “Break point Chlorination”.
[3 marks]Enlist the different types of mixing equipments and explain any one with sketch.
[4 marks]Explain the jar test procedure for determining the optimum dose of chemical coagulant. What is the relationship between pH, Alkalinity and the alum dose.
[7 marks]Define physical characteristics of water and wastewater. Enlist and explain all the physical parameters along with their sources and effects.
[7 marks]Enlist and explain the factors affecting the process of chlorination.
[3 marks]Write a short note on Aerated Grit Chamber.
[4 marks]Derive the Stokes law for finding the terminal settling velocity of discrete particles. Which relationship will be used if the type of flow is turbulent flow?
[7 marks]Write a short note on ‘Filter backwashing’.
[3 marks]Enlist and explain the mechanisms by which the colloids are stabilized.
[4 marks]Explain the four types of settling phenomena in water and wastewater treatment. Explain clearly the difference between them.
[7 marks]What are the advantages of dual media filters as compared to single media filters?
[3 marks]Explain the coagulation theory for removal of colloids.
[4 marks]Prepare a list of different types of chemical coagulants and explain any two along with chemical reactions.
[7 marks]Write a note on “Operational difficulties of RSF”.
[3 marks]Enlist and explain the mechanisms of filtration in a Rapid Sand filter.
[4 marks]Draw a neat sketch of Rapid Sand Filter and explain its construction and working.
[7 marks]What are the functions of under drainage systems?
[3 marks]Describe the methods normally used to process the sludge before its final disposal.1
[4 marks]Describe the usual sources of sludge and the characteristics of sludge generated in a conventional wastewater treatment plant.
[7 marks]Discuss the objectives of treatment of sludge.
[3 marks]Explain sludge thickening.
[4 marks]Specify the significance of the Volume-Weight relationship of the sludge in design of sludge handling facility.
[7 marks]