Difference between unit operation and unit process.
[3 marks]Enlist and explain 4 physical parameters of water along with sources and effects of each parameter.
[4 marks]Draw a detailed sketch of surface water (River water) treatment for drinking purpose and explain each unit in detail.
[7 marks]What is screen? Write importance of screen in Water and wastewater treatment.
[3 marks]Write the different empirical formula for determination of headloss through fine and coarse screen.
[4 marks]Explain the types of Grit chamber with neat sketch.
[7 marks]Write down chemical reactions involved with Alum, Copperas and Ferric chloride; (i) When bicarbonate alkalinity present and (ii) When Lime added
[7 marks]Explain the phenomenon of flocculation for water and waste-water treatment.
[3 marks]Abar screen is inclined at 60 angle from horizontal. The rectangular bars have width 15 mm & spacing 20 mm. Total number of spacing are 25. Determine the headloss when the bars are clean and velocity approaching 1 m/s. Assume bar shape factor is 1.83.
[4 marks]Enlist and explain the mechanisms of coagulation.
[7 marks]Determine the amount of Fe(OH) produced and amount of alkalinity consumed when 62 mg/Lof FeCl is added to water.3
[3 marks]Draw a neat sketch of functional zone of sedimentation tank for horizontal flow.
[4 marks]Define following terms along with equation and explain its importance for design of sedimentation tank:
[7 marks]Detention time, (ii) Surface overflow rate, (iii) Weir overflow rate and (iv) Scour velocity
Why dewatering of sludge is required?
[3 marks]Briefly explain the jar test in detail with a diagram.
[4 marks]Derive the Newton’s law for settling velocity of discrete particle.
[7 marks]Write a short note on Tube settler.
[3 marks]Explain the process of aerobic and anaerobic digestion.
[4 marks]Differentiate between Slow Sand Filter and Rapid Sand Filter.1
[7 marks]For a circular clarifier of 22 m diameter and flow rate of 10 MLD. Determine Weir Overflow Rate (WOR).
[3 marks]Write down the definitions:
[4 marks]Sludge conditioning, (ii) Leachate, (iii) Bio solid and (iv) Thickening
[ marks]With the help of a neat sketch, explain the construction and working of Rapid Sand Filter.
[7 marks]Explain disinfection and sterilization. Give an example of each one.
[3 marks]Write down the characteristics of an ideal disinfectant.
[4 marks]Define and explain following terms:
[7 marks]Free available chlorine, (ii) Super chlorination, (iii) Plain chlorination, (iv) Post chlorination, (v) Pre chlorination and (vi) Double chlorination.
