Define the following terms: (a) TDS (b) BOD (c) COD.
[3 marks]Differentiate between municipal wastewater and industrial wastewater.
[4 marks]Write a short note on “Natural evaporation” as a treatment of wastewater.
[7 marks]Define the following terms: (i) Sludge volume index, (ii) Mean cell residence time and (iii) Mixed liquor suspended solids
[3 marks]Explain the following terms: 1) Detention time 2) Surface Loading Rate 3) Weir Loading Rate 4) Organic Loading
[4 marks]Explain the activated sludge process.
[7 marks]Draw neat sketch of trickling filter and explain its working.
[7 marks]Why biological treatment is necessary for wastewater?
[3 marks]Write a short note on rotating biological contactors.
[4 marks]Write short note on sludge drying beds.
[7 marks]Explain the function and purpose of secondary sedimentation in a wastewater treatment plant.
[3 marks]Differentiate between standard rate and high rate digester.
[4 marks]State the purpose of filter presses. Enlist and explain the types of filter presses.
[7 marks]Write short note on COD test.
[3 marks]State the design criteria of a flash mixer.
[4 marks]Explain the UASB process with its design criteria.
[7 marks]Discuss the formation of slime layer in trickling filter.
[3 marks]Explain coagulation process and its application for wastewater treatment.
[4 marks]Write short note on sludge digestion process.
[7 marks]Enlist and explain operational problems of screens.
[3 marks]Explain the equalization process in a wastewater treatment plant.
[4 marks]Draw a complete flow diagram of wastewater treatment plant and describe the functions of each units of wastewater treatment plant.1
[7 marks]Prepare a list of sludge dewatering devices and explain anyone with a neat sketch.
[3 marks]Differentiate between diffused aeration and mechanical aeration.
[4 marks]Write short note on sequencing batch reactor.
[7 marks]