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Sevenh Semester B.E. f)egree Examinatinn, June-JulySolid Waste ManagementNote: Answer any FIVE full questions.

a. Define and explain the following terms:i) Soiid r.vaste ii) Solid waste management iii) Integrated - solid wasteb. Expiain in briel the different sources and types of Urban -soiid r.vastes?c. Estimate the moisture content and density of a solid il'aste sample for

LY /f,J42009 *Max. Marks:100

management.(06 Marks)(06 Marks)the following data.

Moist 100ke basis and density values based on 1000k lere content on ensrtv \alues naseo on IUUUKg samCcmponent by mass Moisture content ( ) Typical Density kg/mFood rvastes 15 70 29aPaper 45 06 85Card board 10 05 50)i Plastics

105

(08 N{arks)

a. Distinguish betueen Hauled contarner svstcrn and stationan collection s)'stem i.vith a neatsketch. (0Slvlarks)b. Discuss the f-actors influencing solid rvaste qencration ratcs. (06 i\{arks)c. Estimate the quantity of solid \ iaste geireratiLr.r pcr .innum in a ntunicipal area having oneiakh dwellings. Assuming each person produces 3-50gm ol solid rvaste per dav. Alsoworkout the number of collectors required per day'. if a collector collects l2 calls per hourand works for 8 hours aday. Assume a mean population of -t residcnts per du,clling.(06 \{arks)Explain the various t-actors to be considered in the sclcction of a site for a sanitary land fill.(06 Marks)Explain Area method and Trench method of land tilling techniques stating their rnerits anddemerits. (08 Marks)Determine the land area required for municipalrtv r.rith a population of 50,000 for thefollowing data.(i) Solid w'aste generation : 1.50kgipersoru,'da1,'(ii) Completed density of solid waste in land tlll - -100ksim'(iii) Average compacted depth of solid rvaste : i.Om. (06 &iarks)\Lhat are the factors that must be considered for the design of aerobic compostingprocesses'/ (08 N{arks)Explain briefly lndore process and Bangalore process of composting of municipal solid

65

3a.b.

c.

b.waste.Determine ihe Amount of air required to oxidize comchemical equation: CsoHrooo+oN 4a+b -2c-3d,4

(06 Marks)eteiv one tonne of waste having the

/k-?'ro,+ aCo, +l o-r., luro*dNHrtrl-\4/(06 Marks)

pl

')Use the equation :> C.H6O.N6 +

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a. What are the various types of incinerators and explain the process of incinerationb. Explain briefly various methods of solid waste disposal.c. Explain briefly volume reduction and size reduction of soiid waste.What is pyrolysis? Briefly explain th6 process.Discuss in detail re-use and re-cycling of plastic,Define the term leachate and explain the factorsmunicipal land fill.

management.c. Describe briefly conventional incinerator with the help of a neat sketch.Write short notes on any four of the following:a. Vermi compostingb. Garbage chutec. Management of Toxic solid wasted. Land fill gas collection systemse. Effects of open dumping of solid waste on environment and healthf. Leag aspects of solid waste management.

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