Why are screens necessary before the treatment of wastewater?
[3 marks]Write a short note on grit removal mechanism.
[4 marks]Derive the Stokes law for settling velocity of discrete particles.
[7 marks]Define : (1) SOR (2) WOR (3) Scour velocity
[3 marks]Differentiate between unit process and unit operations.
[4 marks]Write a Short note with a neat sketch on “Horizontal flow Grit Chamber”.
[7 marks]Write a short note on “Breakpoint chlorination”.
[7 marks]Explain the terms along with their values for RSF (i) Uniformity coefficient (ii) Effective size
[3 marks]Differentiate between Physical treatment & Chemical treatment for waste water.
[4 marks]Enlist the different types of mixing equipments & explain any one with sketch.
[7 marks]Differentiate between: Coagulation and Flocculation
[3 marks]Explain various physical and chemical characteristics of water and waste- water.
[4 marks]Explain the procedure for statistical analysis of waste water flow rate data.
[7 marks]Enlist the factors which affect chlorination.
[3 marks]Differentiate between discrete and flocculent settling.
[4 marks]Explain the mechanisms of filtration.
[7 marks]List down the various methods used for particle destabilization.
[3 marks]Write a short note on ‘Tube Settlers’
[4 marks]Explain with neat sketch: dissolved air flotation for surface water treatment.
[7 marks]Prepare a list of disinfectants and explain any one in brief.
[3 marks]Write down the sources and effects of the following parameters in water (i) Organic matter (ii) Turbidity
[4 marks]Explain Sludge Drying bed and its design criteria.
[7 marks]Enlist and explain the mechanisms by which the colloids are stabilized.
[3 marks]Explain the term “Zeta Potential” with neat sketch.
[4 marks]Explain aerobic and anaerobic sludge digestion.
[7 marks]