摘要
以净化城市受污染河水为目标,对Living Machine系统进行改进而构建了植物浮床生态箱/植物浮床生态箱/人工湿地/沉水植物生态箱系统,在系统中引入了多种植物以及鱼类、螺蛳、虾等物种,并以间歇方式运行,平均水力停留时间为2 d。结果表明,经过该系统处理后河水的DO含量提高了100%,对NH4+-N的去除率为82.4%,对TN的去除率为23.4%,对TP的去除率为50.2%,对COD的去除率为28.1%;出水DO、NH4+-N、TN、TP、COD分别为5.20、0.42、9.78、0.34、12.72 mg/L。
A modified Living Machine system was constructed to investigate the purification of polluted urban river water. It consists of two planted floating beds, a constructed wetland and a submerged plant bed. Several kinds of plants, fishes, snails and shrimps are cultured in the system which is operated in sequencing batch mode with hydraulic retention time of 2 days. The results show that after the treatment of the system, DO in the river water is increased by 100%, and the removal rates of NH4^＋ -N, TN, TP and COD are 82.4%, 23.4%, 50.2% and 28. 1% respectively. The average effluent DO, NH4^＋ - N, TN, TP and COD are 5.20 mg/L, 0.42 mg/L, 9.78 mg/L, 0.34 mg/L and 12.72 mg/L respectively.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第17期5-8,共4页
China Water & Wastewater
基金
温州市科技项目(S20070001)
