Give the classification of Screens.
[3 marks]Enlist characteristics of wastewater and explain physical characteristics in detail.
[4 marks]Discuss aerated grit chamber with neat sketch. Also explain advantages and disadvantages of it.
[7 marks]Differentiate between electrophoresis and electro osmosis.
[3 marks]Classify the properties of colloidal dispersion.
[4 marks]Describe electric double layer theory with neat sketch.
[7 marks]Describe DLVO theory with neat sketch.
[7 marks]Distinguish between discrete and Flocculant settling.
[3 marks]Define effective size and uniformity co-efficient.
[4 marks]Write a short note on tube settler with neat sketch.
[7 marks]Define following terms: 1. SOR 2. WOR 3. Scour velocity
[3 marks]Give the detail classification of filtration.
[4 marks]Enlist functional zones of sedimentation tank and explain sludge and outlet zone in detail.
[7 marks]Give the detail classification of treatment.
[3 marks]Find terminal settling velocity of spherical particle with diameter of 0.05mm of specific gravity 2.65 settling through water having kinematic viscosity 1.004 x 10-4 m2/sec.
[4 marks]A 50 MLD treatment uses an alum dose of 125 mg/Lfor raw water which contains about 15 mg/Lsuspended solids. Estimate maximum kg/day of dry sludge solids which must be removed from plant and volume of wet sludge which has 2 % by weight. Take specific gravity of sludge as 1.02. Assume Al (SO ) .14 H Oas alum.
[7 marks]Differentiate between flocculation and coagulation.
[3 marks]Determine the head loss through bar screen when 50% of flow area is clogged due to accumulation of coarse particles. Assume Vapp = 0.6 m/sec, Vscreen = 0.9 m/sec , open area for flow through clear bar screen = 0.9 m2, head loss coefficient C(clean) = 07 and C(Clogged) = 0.61
[4 marks]Discuss settling column test of discrete particles.
[7 marks]How to estimate the SVI?
[3 marks]Enlist methods of dewatering and explain any one in detail.
[4 marks]Write a short note on breakpoint chlorination with neat sketch.
[7 marks]Enlist sources of sludge.
[3 marks]Differentiate between aerobic and anaerobic digestion.
[4 marks]What do you understand by the term disinfection of water? Why it is necessary to disinfect the water for public water supply schemes?
[7 marks]