LIFE CYCLE ASSESMENT OF MUNICIPAL SOLID WASTE MANAGEMENT POSSIBILITIES IN ASTURIAS (SPAIN)

Municipal Solid Waste (MSW) constitutes a serious problem in urban areas. A waste hierarchy is often suggested and used in waste policy making. Different versions of the hierarchy exist, but in most cases the following order is suggested: 1. Reduce the amount of waste, 2. Reuse, 3. Recycle materials, 4. Incinerate with heat recovery, 5. Landfill. The first priority, to reduce the amount of waste, is generally accepted. However, the remaining waste needs to be taken care of as efficiently as possible. The hierarchy after the top priority is often contested and discussions on waste policy are intense in many countries.

A Life Cycle Assessment was carried out for different possibilities of managing Municipal Solid Waste in Asturias in order to find the most suitable option from the environmental viewpoint. The LCA was carried out using the “SimaPro 7.0” program and the Ecoindicator 95 method for environmental impact assessment. The scenarios were: a) landfilling (with energy recovery); b) incineration (with energy recovery); c) mechanical biological treatment followed by aerobic stabilization of the organic fraction and landfill; d) mechanical treatment followed by aerobic stabilization of the organic fraction and incineration; and e) mechanical treatment followed by anaerobic stabilization of the organic fraction and landfill. The alternative with the highest impact was found to be incineration without any prior treatment of the MSW, followed by landfill. Among the alternatives for mechanical biological treatment, the best option according to this analysis is the one that includes incineration of the aerobically stabilised organic fraction and refuse.



Copyright: © IWWG International Waste Working Group
Quelle: Specialized Session F (Oktober 2007)
Seiten: 8
Preis inkl. MwSt.: € 8,00
Autor: Jesus Rodrígrez-iglesias
Leonor Castrillón
Maria Elena Maranón
Yolanda Fernández
I. Vásquez

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Leichtweiß-Institut
Physikalische und biologische
Aufbereitungs- und Behandlungs-
technologien, TU Braunschweig