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2003 Course Environmental Engineering (Elective I)

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Total No. of Questions :10] P1162 [Total No. of Pages : 3 [3864] - 365 B.E. (Petrochemical Engineering) 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 electronic pocket calculator is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) Discuss removal of particulate matter from the gaseous emissions from a complex fertilizer unit in details. [8] b) Discuss the impact of Gas Flaring on environment in details. [6] c) Enlist five characteristics of hazardous waste. [2] Q2) a) Explain impact of Petroleum & Petrochemical industry on environment starting from crude oil production to refining. [6] b) Describe Aquatic Ecosystem with neat diagram. [6] c) Discuss Hydrologic cycle with neat diagram. [6] Q3) a) With the help of neat sketch describe catalytic oxidation method for air pollution control. [8] b) With the help of flow diagram, explain Ethyl Amine Process for removal of acidic pollutants from gaseous emissions from petroleum industries. [8] P.T.O. Q4) a) Explain any four important parameters used internationally to assess quality of produced wastewater. [4] b) Give at least four advantages of electrostatic preceptor. c) A conventional cyclone with diameter 2 m handles 6 m3/s of standard air carrying particles with a density of 2000 kg/m3. For effective number of turns (Ne) = 6. Determine the cut size. What will be the cut size for a high efficiency cyclone? Take viscosity of gas ( g) as 1.81 10-5 kg/(m.s.). Neglect the density of the gas. [8] Q5) a) With respect to solid waste discuss the following with neat diagram. [8] i) Sanitary land filling operations. ii) Composting. iii) [4] Open dumping. b) Give detailed classification of medical waste. [4] c) What are the methods to treat the Biomedical wastes? [4] SECTION - II Q6) a) b) c) Q7) a) Write the detailed classification of solids found in waste water. [4] Discuss in details about recovery of materials from process effluents.[8] Discuss in details about Organic matter in a wastewater . [6] What is Chemical Oxygen demand? Can we determine tentative BOD of wastewater if its COD is known? How? [6] b) What are the different types of secondary treatment available? Write in details about any two secondary treatments. [10] Q8) a) What are Chemical treatment methods are available for waste water treatment. Explain any one in details. [8] b) Discuss in detail about how liquid effluent from petrochemical complex is treated. [8] Q9) a) Determine the 12-day demand of a wastewater at 20oC if its 5-day BOD at the same temperature is 250 mg/L. Also, calculate the 5-day BOD at 27oC as well as 30oC temperature. [8] Data i) = 1.053 ii) Reaction Rate constant (k) (base e, 20oC) = 0.23 per day. b) Discuss the new potential methods of disposal for solid wastes. [8] [3864]-365 2 Q 10 Write short note on following: (Any Four): a) Anaerobic sludge digester. b) Sludge treatment & disposal. c) Trickling filter Vs Activated sludge process. (Four points) d) Facultative pond system. e) Sludge volume index (with formula). jjj [3864]-365 3 [16]

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