engleski

THE EFFCIENCY OF PILOT-SCALE CONSTRUCTED WETLAND FOR THE TREATMENT OF LEACHATE WATER

Constructed wetland is the system which simulates a natural regime and can treat wastewater with the support of different physical, chemical and biological processes. In this work, the efficiency of pilot-scale subsurface constructed wetland for the treatment of leachate water has been assessed on the basis of the following parameters: iron, chromium, phosphates and total organic carbon (TOC) content as well as chemical oxygen demand (COD) and colouration. In order to increase the efficiency, the leachate water has been recirculated in the constructed wetland system. The results obtained has shown the increase of the efficiency for the removal of iron and TOC values, while at the same time, recirculation did not show any significant impact on the chromium removal. On the other hand, decrease of COD value and colour removal was observed in the first 10 days of recirculation, while phosphate concentration increased.

Leachate water, Constructed wetland, Pilot-scale, Wastewater treatment

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