Incineration method of solid waste disposal

This presentation gives information about Incineration method

1. Solid Waste Management Incineration method SUBMITTED TO: Mrs. Indhu Priya Dept. of urban & Regional planning JNAFAU Submitted By: 13011BA004 ; 13011BA012; 13011BA020; 13011BA027

2. Incineration is the process of control and complete combustion , for burning solid wastes. It leads to energy recovery and destruction of toxic wastes. In these plants the recyclable material is segregated and the rest of the material is burnt. Example : waste from hospitals In some newer incinerators designed to operate at temperatures high enough to produce a molten material, it may be possible to reduce the volume to about 5% or even less One of the most attractive features of the incineration process is that it can be used to reduce the original volume of combustible solid waste by 80–90%. Incineration

3. In Indian cities, incineration is not very much practiced. This may be due to the high organic material (40–60%), high moisture content (40–60%), high inert content (30–50%) and low calorific value content (800–1100 kcal/kg) in MSW. The first large-scale MSW incineration plant was constructed at Timarpur , New Delhi in 1987 with a capacity of 300 t/day and a cost of Rs. 250 million by Miljotecknik volunteer, Denmark. The plant was out of operation after 6 month and the Municipal Corporation of Delhi was forced to shut down the plant due to its poor performance . Incineration Practice in India

4. Incenaration Practice in India ( coun ..) Another incineration plant was constructed at BARC, Trombay (near Mumbai) for burning only the institutional waste , which includes mostly paper and it is working as of this writing. In many cities, small incinerators are used for burning hospital waste.

5. Incineration method Advantages: The amount and volume of the MSW can be reduced significantly ( upto 90% by volume and 75% by weight); Waste-to-energy. Disadvantages: Not all waste can be burned (There will still be landfills) Release hundreds of toxic chemicals into the atmosphere; Disposal of the ash (The toxic substance are more concentrated in the ash) Highly related to the economic condition A classic short-term solution (it destroys) material by turning it into toxic ash.

6. Waste To Energy Plant Diagram

7. Incineration Objectives The purpose of Incineration to combust solid wastes to reduce their volume to about one tenth,with out producing offensive gases and ashes. Sediment Preparation Sediment Feed Incinerator Air Pollution Controller Residue Handling Residue Handling Flue gases Stack emission Treated solids solids wastes Source: USEPA INCINERATION PROCESS

8. Incenaration can be useful for… Volume Reduction : Depending on its composition, incineration redues the volume of solid wastes to be disposed of by an average of 90%.The weight of the solid wastes to be dealt with is reduced by 70- 75%. Stabilisation of wastes: Incinerator output (ash) is considerably more inert than incinerator input(solid wastes), mainly due to the oxidation of the organic components of the waste stream. Recovery of Energy from Waste: This represents a valorisation method, rather than just a pre treatment of Waste prior to disposal. Energy recovered from burning the wastes is used to generate stream for use in on site electricity generation.

9. Sterilisation of waste : This is of primary importance in the incineration of clinical or biomedical waste. Incineration of solid wastes will also ensure destruction of pathogens prior to final disposal. Incenaration can be useful for…

10. The End Source: http :// www.unc.edu/courses/2009spring/envr/890/002/readings/SolidWasteIndiaReview2008 http ://environmentclearance.nic.in/writereaddata/Form-1A/HomeLinks/TGM_% 20Comman%20Municipal%20Sold%20Waste%20Management_160910_NK