An Integrated Ecological Floating-Bed with Plant, Freshwater Clam and Biofilm Carrier for Eutrophic Water Purification
Planted floating-bed can be used for treating eutrophicated water in a simple and cost-effective manner,the performance of which however is unavoidably restricted by the growth rate and limited stand biomass of the plant.We report here,a novel approach to enhance the performance of traditional planted floating-bed by introduction of filter-feeding bivalve and biofilm cartier.The integrated ecological floating-bed (IEFB) concurrently employing plant ( lpomoea aquatica),freshwater clam (Corbicula fluminea) and biofilm cartier ( an artificial semi-soft assembly medium) performed better than the other two kinds of floating-beds,one of which was constructed with freshwater clam and biofilm carrier,while the other one consisted of plant and biofilm carrier.Moreover,percentage reductions of pollutants increased with extended water exchange period.With a water exchange period of 7d,the removal efficiencies of IEFB for total nitrogen (TN),ammonium nitrogen ( NH4 +-N),total phosphorus (TP),were 52.7％,33.7％,54.5％ respectively.
Integrated ecological floating-bed Corbicula fluminea biofilm carrier nitrogen phosphorus
Wang guofang Li wei Li xianning Wang xiangjing
College of Energy & Environment, Southeast University, Nanjing 210096, China
国内会议
武汉
英文
625-630
2009-11-01（万方平台首次上网日期，不代表论文的发表时间）