Give the classification of screen with opening size.
[3 marks]Explain Average daily flows, Maximum dry weather flows, Peak wet weather flows, Minimum hourly flows and Sustained flows.
[4 marks]Draw a detailed sketch of ground water treatment (with high Iron & Manganese conc.) for drinking purpose and explain each unit in detail.
[7 marks]Distinguish between discrete and flocculant settling.
[3 marks]Draw neat sketch and explain Conventional Water Treatment Plant.
[4 marks]Explain various physical and chemical and biological characteristics of water and waste-water.
[7 marks]Describe electric double layer theory with neat sketch.
[7 marks]Define effective size and uniformity co-efficient.
[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]Find the settling velocity of a discrete particles in water under conditions when Reynolds’s number is less than 0.5. The diameter & specific gravity of particle is 5 x 10-3 cm and 2.65, respectively. Water temperature is 20˚Cand kinematic viscosity is 1.01 x 10-6 m2/sec.
[3 marks]Discuss settling column test of discrete particles.
[4 marks]Enlist and explain filtration mechanisms.
[7 marks]Determine the amount of Fe(OH) produced and amount of alkalinity consumed when 65 mg/Lof FeCl is added to water.3
[3 marks]Prepare a list of different chemical coagulants. Explain chemical reactions when alum is used as coagulants.
[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.1
[ marks]Write a note on operational difficulties of Rapid Sand Filter.
[3 marks]Write a short not on Break-point chlorination.
[4 marks]With the help of a neat sketch, explain the construction and working of Slow Sand Filter.
[7 marks]What materials do include in Grit? Write the purpose of Grit Removal.
[3 marks]Write down the definitions:
[4 marks]Sludge conditioning, (ii) Leachate, (iii) Bio solid and (iv) Thickening
[ marks]Derive the Newton’s law for settling velocity of discrete particle.
[7 marks]Enlist sources of sludge in water and wastewater treatment separately.
[3 marks]Explain aerobic and anaerobic sludge digestion.
[4 marks]With the help of a neat sketch explain the concept of “Break point Chlorination.”
[7 marks]