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Applying Mechanical Pre-Treatment and Landfill Mining Approach in Recovering Refuse Derived Fuel (RDF) from Dumpsite Waste: Thailand Case Study

This paper explores the possibilities of using basic mechanical pre-treatment principals band Landfill mining approach to recover the discarded plastics from Nonthaburi solid waste disposal site in Thailand. The excavated wastes from the dumpsite were characterized for their physical composition and chemical characteristics according to their disposal age. The composition of solid waste excavated from the site showed high plastic wastes content (25 to 45%) of total weight.

The waste samples were first manually sorted to remove noticeable inert fractions and metallic components from the plastic wastes. The sorted wastes are then passed through a rotary trommel screen to remove finer particles and soil components. After trommel screening the plastic contents in the treated waste increased up to 83 – 90%. The sorted plastics were then shredded and blended with cassava starch in a proportionate ratio to produce RDF mainly targeted for industrial fuel. These were then formed into briquettes using a screw compactor. The maximum plastic content for an ideal densification of the briquettes were determined. The quality concerns and the characteristics of the fuel produced were in compliance with standards and acceptable for industrial use. This paper also looks into the economic aspects of producing such fuels.

Copyright:	© Wasteconsult International
Quelle:	MBT 2007 (Mai 2007)
Seiten:	12
Preis:	€ 0,00
Autor:	Prof. Dr. Chettiyappan Visvanathan Tenzin Norbu Prof. Dr. Chart Chiemchaisri C. Charnnok
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