利用吊兰等深度处理生活污水

利用吊兰等无土栽培系统对生活污水进行深度处理，实验证明系统对污水中氮磷等营养物质的去除效果较好，系统出水中氨氮的浓度可达到4.203mg/L或3.6426mg/L，硝态氮和亚硝态氮的浓度为2.802mg/L，总磷浓度可达到0.2mg/L左右，系统出水基本可达城市再生水回用标准。两系统中植物的长势良好，在设计运行时间内，两种系统中的植物均有明显的长势，尤其吊兰总重量增加了42g左右；就叶片数而言两种兰草均增加了30片左右。且系统中植物的长势良好，在有效去除污染物的同时，产生一定的景观价值和经济效益，从而从整体上降低污水处理成本。

Using Bracketplant Chlorophytum to Advanced Treat Domestic Wastewater

The research on domestic wastewater advanced treatment with soilless cultivated braeketplant ehlorophytum shows that this system can remove nutrient substances （ such as N, P etc. ） efficiently. Kinds of nutrient substances concentration in two systems as follow, NH4^＋ ：4.203 mg/L or 3.6426 mg/L; nitrate nitrogen ＆ nitrite nitrogen： 2.802 mg/L; T - P can reach 0. 2 mg/L, and the treating water can reach standards of reclaimed water quality basically. Plants all grow well in two systems in operate time; especially braeketplant ehlorophytum, its total weight increased 42 g; and two eupatorium fortunei＇s leaves both increased about 30 pieces. So they not only remove pollutants efficiently, but also have some landscaping value and economic benefits. By this way. the total cost of domestic wastewater treatment can be reduced.