机构地区: 华南农业大学资源环境学院环境科学与工程学系
出 处: 《应用生态学报》 2003年第4期597-600,共4页
摘 要: 垂直流人工湿地系统不但具有较高的水力负荷率 ( 5 4~ 6 4cm·d-1) ,而且对有机物和N、P都具有较高的去除效果 .其对化粪池出水中的COD、BOD5、NH4 + N和总P的去除率分别为 76 %~ 87% ,88%~92 % ,75 %~ 85 %和 77%~ 91% .处理出水中COD、BOD5、NH4 + N和总P的平均浓度分别小于 6 0、2 0、2 5和 2 .0mg·L-1.植物种植试验结果表明 ,种植风车草可提高氨氮、总N和总P的去除率 ,分别为 2 %~3 %、4%~ 6 %、10 %~ 14% . Vertical-flow constructed wetlands (VFCWs) system not only has a higher hydraulic loading rate (54~64cm·d -1), but also has a good removal efficiency for organics, ammonia nitrogen (AN) and total phosphorus (TP). The removal efficiencies of COD, BOD 5, AN, and TP for septic tank effluent were 76~87%, 82~92%, 75~85% and 77~91%, respectively,and the average effluent concentrations of COD, BOD 5, AN, and TP in the treated effluent were less than 60, 20, 25 and 2.0 mg·L -1, respectively. A comparison of planted and unplanted columns showed that plantation of Cyperus alternifolius could increase the removal rates of AN, TN, and TP by 2~3%, 4~6%, and 10~14%, respectively.
领 域: [环境科学与工程]