What is the necessity of water supply scheme? Draw a complete flow diagram of water treatment plant.
[3 marks]Discuss various control measures for water borne diseases.
[4 marks]Enlist different physical and chemical characteristics of water and discuss their environmental significance.
[7 marks]Explain population forecasting by geometrical increase method.
[3 marks]What is an intake structure? Sketch and explain construction and working of a river intake.
[7 marks]Find average of pH 2 and pH 6. Calculate how much acidic is pH 2 compared to pH 6.
[4 marks]What is solid waste management? State the composition and characteristics of the municipal solid waste.
[7 marks]Give advantages and disadvantages of RCC pipe.
[4 marks]Explain reflux valve with neat sketch.
[3 marks]Write short note on Grid iron system of water distribution network.
[4 marks]Design a sedimentation tank for a water works, which supplies 1.4x106 liter/day water to the town. The sedimentation period is hours, the velocity of flow is 12 cm/minute, depth of water in the tank is 4.0m. Assuming an allowance for sludge is to be made as 80cm.
[5 marks]What causes alkalinity in water.
[3 marks]Give comparison between rapid sand filter and slow sand filter.
[7 marks]What do you understand by sedimentation with coagulation?
[4 marks]What is dB? Explain the effects of noise pollution.
[3 marks]Discuss the different methods of sewage disposal.
[4 marks]Determine BOD at 150 Cif BOD at 200C is 150 mg/l. k = 8 5 D(20) 0.23.1
[7 marks]Differentiate between aerobic and anaerobic decomposition of wastewater.
[3 marks]What are various methods of disinfection? What are the chemicals used as disinfectants?
[7 marks]Sketch and explain construction and working of trickling filter.
[7 marks]Write a short note on septic tank.
[4 marks]Explain DO sag curve with sketch.
[7 marks]Explain effects of air pollution on human health.
[3 marks]Write a short note on composting.
[4 marks]Differentiate between BOD and COD.
[3 marks]