Decontamination of HCH polluted lands
2008
Lesnic, M. | Paduraru, D.
As a result of treating the soil with casual indifference, Romania has today many contaminated sites, some of them unidentified. Concerning the contaminated lands in Romania, one of the most difficult situation is in the HCH (hexachlorocyclohexane-Lindane pesticide) polluted area near Turda town, Cluj country. Here one of the four emplacements of HCH existing polluted lands, namely the one which is located nearby the National Road number 1 - called DN 1, has been chosen for a decontamination demonstration project. The project has been approached by two versions: excavation and disposal of contaminated soil ex-site in a centralized controlled landfill (Version 1) and immobilization (Version 2). The total surface area covered by all four deposits is 21,400 ha, of which the deposit chosen for the demonstration project (DN 1) is 5,000 ha. The total volume of all deposits is 32,700 square m (60,400tonnes) of which DN 1 deposit is 7,500 square m (13,800 tonnes). Under the fist version a central deposit with the effective volume of 9,ooo square m, covering a surface area of 3,200 square m, has been provided. With the second version each existing deposits is to be isolated to avoid groundwater pollution. Versio 1 (with centralized deposit) has been estimated roghly to be 711,150 USD and Version 2 (isolation of each existing deposit has been estimatrd to be 1,101,900 USD). For all four emplacements in Turda zone, the total cost has been established to be 2,220,000 USD - Version 1 and 2,700,000 USD - Version 2. The investment in both Versions will last untill November 2009 - for remediation of contaminated site and December 2012 for the period of operation and control. Analyzing the technical proposals for Turda project it can be concluded that the first version excludes the environmental problems. Version 2 is more risky and more expensive regarding invetment and 0 and M.Mersion 1 is quick and well cocumented.
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