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2003 Course Environmental Eng. (Elective I)

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Total No. of Questions : 10] [Total No. of Pages : 2 [3664] - 325 P 1354 B.E. (Petrochemical) ENVIRONMENTAL ENGINEERING (2003 Course) (Elective - I) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) b) c) Discuss The Biosphere in detail. [6] Elaborate on The Hydrologic Cycle . (Diagram is necessary). [6] Describe The Carbon Cycle in detail. (Diagram is not necessary). [6] Q2) a) Give the typical classification of solid waste. Also, explain each class in brief. [10] Elaborate on Treatment of Biomedical Waste . [6] b) Q3) a) b) Q4) a) b) Describe sanitary landfilling operation for disposal of solid waste in detail. (Diagram is necessary). [10] Elaborate on Source correction methods for air pollution control . [6] Enlist at least three basic mechanisms of removing particulate matter from gas streams. Enlist also the three T s of combustion. [6] With the help of neat sketch, describe catalytic oxidation method for air pollution control. [10] Q5) Write a short notes on each of the following : [16] a) Control of NOx in a complex fertilizer plant. b) Removal of hydrogen sulphide from sour gas in a petroleum industry. c) Fabric filter systems. d) Fixed bed adsorber. P.T.O. SECTION - II Q6) a) b) c) Elaborate on Origin of Wastewater . Write a note on Dissolved Oxygen in the water . Describe Plant Nutrients as water pollutants in detail. Q7) a) b) Elaborate on Total Solids content of wastewater . [8] Write a detailed note on Basic Processes of Wastewater Treatment . (Diagrams are not expected). [8] Q8) a) The 5-day 20oC BOD of a wastewater is 250 mg/L. What will be the 10day demand? If the bottle had been incubated at 25oC and 30oC, what would the 5-day BOD have been? Data : Reaction rate constant (k) (base e, 20oC) = 0.23 per day [8] = 1.053 . Define the term Sludge Volume Index and give the formula to calculate the same. Also, give the values for good as well as poor sludge. [4] Compare trickling filters with activated sludge systems. (At least four points are expected.). [4] b) c) Q9) a) b) c) [6] [6] [6] With the help of neat sketch, describe anaerobic sludge digester. [6] With the help of diagram, discuss facultative pond system. [6] Define the term Coagulation and give its significance in advanced wastewater treatment. Also enlist two coagulants. [4] Q10)Write short notes on each of the following : a) Microstraining. b) Role of adsorption in advanced wastewater treatment. c) Treatment of liquid effluent from a complex fertilizer plant. d) Treatment of liquid effluents from petrochemical industries. [3664] - 325 -2- [16]

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