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Harmandali Landfill Site - From the 1990’s Till Today

Until recently, there were six sites in Izmir, where the wastes were disposed of in uncontrolled garbage dumps. As a result of city’s rapid development, these areas turned into residential areas, and day after day these areas started to threat the environment and human health.
The Harmandali landfill is located 2.5 km east of the Harmandal village, between 38 º 32 '- 38 º 33' longitude and 27 º 05 '- 27 º 10' north latitude. The average rainfall and the average tem-perature on the Harmandali landfill site are 700 mm annually precipitation and 17.6 º C respec-tively.

Being the third largest metropolitan area of Turkey, the city of Izmir has a fairly decent municipal solid waste (MSW) management system, compared to other parts of the country. The system is comprised of a sanitary landfill, a composting plant and a transfer station. The Harmandali landfill site forms the core of the waste disposal system and is operative since 1992. The landfill has a gas collection and flaring system but lacks of a state of the art leachate collection and drainage network. The natural topography of the area allows the leachate, to get collected by a rectangular open ditch system, at the lower elevations of the landfill site. The collected leachate is then pumped to a chemical-physical (CP)treatment plant where it is treated for its high load on contaminants. In the early 1990’s, deciding for a new landfill site was an urgent necessity. There was a waste disposal shortage in the city. The city grew and a landfill in Bayrakli swamp had to be closed and another landfill in Cigli had to be ameliorated. A similar situation is also seen nowadays. This time, it should be decided on a technology intensive method instead of a land intensive method for the landfill disposal of MSW in Izmir. The landfill has such a topography that EGE-KOOP (Aegean Residence-Building Cooperation) could have developed perfect projects for housings there. This site was selected for landfilling purposes. According to the DSI’s (State Hydraulic Works) report from 24th of September 1998, Harmandali landfill does not have any potential to pollute the ground water.
Harmandali landfill was opened in 1992 and its area is approx. 900,000 m2. A research of the hydrological and geological conditions was made by Hacettepe University to determine whether any work is needed to protect the region’s ground and surface water resources from leaking and floating of waste. According to the geological survey report, the field permeability coefficient is 10-7 m/second and at the bottom, clay is covered with a silt material, providing a fair good natu-ral sealing layer.

Copyright:	© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle:	Depotech 2010 (November 2010)
Seiten:	4
Preis:	€ 2,00
Autor:	Åžebnam Bastan Yilman Prof. Dr. Ertugrul Erdin Assist. Prof. Dr. Gorkem Akinci E. B. Özkaraova Güngör
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