摘要
对深圳石岩河人工湿地运行以来的污水净化效果、植物生长状况和处理系统存在的问题等进行了分析和研究.结果表明,湿地运行7个月,污水处理量达1.8×106 m3,对污水中CODCr、BOD5、SS、TP、TN和NH3-N的去除率分别为87.1%、94.1%、57.5%、91.4%、47.8%和74.8%.对植物氮磷的分析表明,植物氮质量分数在1.31%～2.25%之间,磷质量分数在0.40% ～ 1.15%之间,植物氮积累量为116.2 ～ 417.1 kg·hm-2,磷积累量为70.7～178.3 kg·hm-2.与工程总处理量相比,植物吸收的氮磷量仍占很小部分,平均分别为4.90%和3.78%.此外,对工程运行状况的观测发现,人工湿地存在工程表面板结、内部堵塞及植物管理等问题,板结程度与植物覆盖度成反比.
Shiyanhe Constructed Wetland of Shenzhen, locating in Shiyan town of Shenzhen city, has been under operation since July 2003. Alter 7 months＇ treatment （ from July, 2003 to Feb, 2004 ） , over 1.8×10^6m^3 wastewater had been treated, and the main pollutants CODCr, BOD5, SS, TP, TN and NH3-N decreased by 87.1%, 94.1%, 57.5%, 91.4%, 47.8% and 74.8%, respectively. The research on the nutrients in the plant tissues suggests that the content of N reached 1.31%-2.25% and content of P reached 0.40%-1.15%, and the uptake amount got to 116.2 - 417.1 kg.hm2 and 70.7-178.3 kg.hm^2 accordingly. However, the plants only consumed a small amount of the total pollutants removed by the wetland, with an average of 4.90% for N and 3.78% for P. Furthermore,the investigation also detected some problems in the wetland system such as surface hardening, jamming and plant management, and surface hardening is opposite to plant coverage.
出处
《生态环境》
CSCD
北大核心
2005年第4期536-539,共4页
Ecology and Environmnet
基金
广东省科技项目(2003C32201)
广州市科技项目(2003J1-C0341)
关键词
人工湿地
污水处理
植物吸收
运行问题
constructed wetland
wastewater treatment
plant uptake
practical trouble
