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    302 swapan 302 swapan Presentation Transcript

    • ICAER 2013, IIT BOMBAY Classification and Energy Recovery from Municipal Solid Waste, Generated by Greater Metropolitan Regions of Kolkata, India PRESENTED BY S DAS CO-AUTHOR:- PROF B K BHATTACHARYYA DEPARTMENT OF MECHANICAL ENGINEERING BESU, SHIBPUR, HOWRAH-03
    • ICAER 2013, IIT BOMBAY OUTLINE  Introduction Municipal solid waste generation Composition of municipal solid waste Recyclable waste recovery  Waste – to – energy Incineration process  Precautions for Land filling  Conclusions 2
    • ICAER 2013, IIT BOMBAY 3
    • ICAER 2013, IIT BOMBAY Processing & Treatment Waste Prevention Disposal Integrated Solid Waste Management 4
    • ICAER 2013, IIT BOMBAY MUNICIPAL SOLID WASTE GENERATION Major Sources 1. Residential areas. 2. Commercial or market areas. 3. Offices. 4. Institutions. 5
    • ICAER 2013, IIT BOMBAY GENERATION RATE Quantity in MetricTon 112740 113192 88332 FEB 121302 123905 122866 124925 116768 111359 87144 JAN 124111 117200 MAR APRIL MAY JUN JULY AUG SEP OCT NOV DEC Monthly Generation 6
    • ICAER 2013, IIT BOMBAY PERCENT DISTRIBUTION OF MUNICIPAL SOLID WASTE Road Swiping Sources House hold Institute Commercial and market 0 5 10 15 20 Percent Distribution 25 30 35 40 7
    • ICAER 2013, IIT BOMBAY COMPOSITION FACTORS OF MUNICIPAL SOLID WASTE • • • • • • Nature of local activities. Food habits. Cultural traditions. Socio-economic factors. Climatic conditions. Seasons. 8
    • ICAER 2013, IIT BOMBAY COMPOSITION OF MUNICIPAL SOLID WASTE 3% 3% < 1% 30% 45% < 1% 5% 4% 3% 1% 4% Food and vegetable Glass and Ceramics Garden and green Coconut Paper Textiles Wood Plastics Construction and demolition Metals Other organic Other inorganic 9
    • ICAER 2013, IIT BOMBAY RECYCLABLE WASTE RECOVERY • Collection process of municipal solid waste. • Segregation process of recyclable materials. • Sorting of combustible waste. • Separation of biodegradable waste. 10
    • ICAER 2013, IIT BOMBAY CONCEPTUAL MODEL 11
    • ICAER 2013, IIT BOMBAY QUANTITY OF SEGREGATED MATERIALS 50 Total Ward No 33 Ward NO 47 Ward NO 64 Ward NO 103 Ward NO 110 Ward NO 115 Ward NO 130 Quantity in Metric Ton 40 30 20 10 0 August September October November Month 12
    • RECYCLING PROCESS ICAER 2013, IIT BOMBAY Segregated Solid Waste Raw Materials New Products 13
    • ICAER 2013, IIT BOMBAY RECYCLABLE ITEMS 19% 19% 6% 6% 4% 4% 6% Paper Cardboard Metal Coconut shells Glass Textiles Leather Rubber Wood Rigid plastic Soft plastic 2% 4% 23% 6% 14
    • ICAER 2013, IIT BOMBAY WASTE – TO – ENERGY • Pyrolysis. • Gasification. • Incineration. 15
    • ICAER 2013, IIT BOMBAY INCINERATION PLANT 16
    • ICAER 2013, IIT BOMBAY UNIT FUNCTIONS AND PROCESS 17
    • ICAER 2013, IIT BOMBAY WASTE PARAMETERS FOR ENERGY RECOVERY SL. NO . Sources Waste Generation (MT/d) 1 Commercial and Market 1465.65 2 Institution 254.69 3 Household 1378.21 4 Street Sweeping 918.81 Segregation Parameter Moisture <45%, Organic >40%, Fixed Carbon<15%, Total Inert<35%, Calorific value>1832 k-cal/kg Combusti Total ble (%) (MT/d) 70 100 75 2496 20 18
    • ICAER 2013, IIT BOMBAY ENERGY PRODUCTION Total combustible waste quantity (W) = 2469 metric ton/ day. Net calorific value (NCV) = 1832 k cal/kg = 7665 kJ/kg. Energy recovery potential = W x NCV x 4.186 x 1000 / 3600 = 1.16 x NCV x W kWh Power generation potential = 1.16 x NCV x W/ 24 kW = 1.16 x 1832 x 2469 / 24 = 218621.72 kW Ƞplant = 25%(urbanindia.nic.in) Hence total power generation per day of operation = 218621.72 x 0.25 kW = 54655.43 kW = 54 MW 19
    • ICAER 2013, IIT BOMBAY PRECAUTIONS FOR LAND FILLING  Minimizes the volume of waste for disposal.  Ground water pollution.  Proper lining and coverage of the landfill .  Treating the leachate to remove heavy metals before discharge. 20
    • ICAER 2013, IIT BOMBAY CONCLUSIONS • Coupled with necessary legislative and control measures for the success of this technology. • The current costs still favour the landfill option of managing the MSW. • This technology reduce considerably the amount of land consigned annually to landfilling. • Effectively bridge between waste recycling, composting and landfilling. 21
    • ICAER 2013, IIT BOMBAY REFERENCES 1. Zaman, A. U. (2010) Comparative study of municipal solid waste treatme nt technologies using life cycle assessment method, International Journal of Environmental Science and Technology, 7 (2), pp. 225-234. 2. Ruth, L. A. (1998) Energy from municipal solid waste: a comparison with coal combustion technology, Prog. Energy Combust. Sci., 24, pp. 545564. 3. http://urbanindia.nic.in/publicinfo/swm/chap15.pdf. 4. Bovea, M.D., Fores, V. I., Gallardo, A., and Mendoza F.J. C. (2010) Environmental assessment of alternative municipal solid waste management strategies. A Spanish case study, Waste Management, 30, pp. 2383–2395. 22
    • ICAER 2013, IIT BOMBAY THANKS FOR YOUR KIND ATTENTION S DAS PhD Scholar Department of Mechanical Engineering Bengal Engineering and Science University, Shibpur Howrah-711103 E-mail- swapan2009sajal@gmail.com 23