State the principle of activated sludge process
State the principle of activated sludge process
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Environment Management
Q.1 Attempt any THREE of the following. 12 Marks
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a) State any four factors affecting water demand.
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b) Define self cleaning velocity & nonscouring velocity.
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c) Draw a sketch of single pipe system of house drainage.
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d) State the principle of activated sludge process?
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e) State types of severs used in sewerage system depending upon i) Shape ii)
material used.
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f) i) State any two characteristics of dairy waste.
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ii) State any two advantages of one – pipe system.
Q.2 Attempt any ONE of the following. 12 Marks
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a) Explain principle of Coagulation.
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b) State any four differences between Gravity distribution system and pumping distribution system.
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c) What is the function of Grit chamber in sewage treatment plant? Draw a labeled cross section of Grit chamber.
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d) Draw a neat sketch of ‘P’ & ‘S’ trap.
Q.3 Attempt any TWO of the following. 16 Marks
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a) State the precautions & procedure to be followed while collecting water sample
for bacteriological testing.
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b) Enlist methods of disposal of solid waste & explain in detail any one.
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c) Describe the construction of ‘Aqua Privy’ with a neat sketch.
Q.4 Attempt any TWO of the following. 16 Marks
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a) Explain function and working of trickling filter with the help of neat sketch.
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b) Explain procedure of laying sewer with neat sketch.
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c) Compare with neat labelled sketch separate system & combine system of
State with reason which system is preferred.
Q.5 Attempt any TWO of the following. 12 Marks
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a) What is Global Warming? State effect of Global Warming.
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b) Draw a neat labelled sketch of Drop manhole and state any two factors governing
location of man hole.
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c) What is importance of ‘BOD’ in analysis of sewage with respect to its strength?
Q.6 Attempt any TWO of the following. 12 Marks
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a) Draw a neat labelled sketch of intercepting trap & state its use.
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b) State four advantages of incineration method of disposal of solid waste.
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c) State necessity & importance of Rural Sanitation.
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d) List any four laws related to Environmental pollution.
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