Evapotranspirative, soil-plant systems with reed (Phragmites australis) for landfill leachate treatment - two years operational experiences

摘要

The decreasing of leachate volume in soil-plant system ensues due to evaporation supported by plants transpiration. In year 2006, the soil-plant systems with reed have been implemented at the landfill in Zakurzewo near Grudziqdz, Poland. The share of landfill leachate in total amount water supplied into soil-plant system was 24.4 % during firs year of operation and 37.6 % in the second year. In the year 2006 about 1100 m were evapotranspirated. Next year we observed the increase of treatment efficiency to the 4000 m3. During second year, July the mean value of reed transpiration rate was at the level 261.3 [molH_2Om~(-1)V~(-1)]. Comparison, with laboratory results indicated strong adaptation force of reed growing at the landfill. The electrolytic conductance (EC) of the leachate gathered in the soil-plant system was 10.8 mS/cm. During laboratory tests similar reed transpiration rate -250.3 [molH_2Om~(-1)V~(-1)] was measured for solution with EC - 1.1 mS/cm.