生化生态组合湿地系统对农村生活污水的净化效果研究

以江阴市陆桥湿地系统为例,采用生态-生化组合湿地工艺处理农村生活污水,研究生态-生化组合湿地的运行情况和对农村生活污水的净化效果。研究结果表明,采用生化-生态优化组合工艺达到了较好的处理效果,农村生活污水中氮、磷、化学需氧量(COD)、五日生物需氧量(BOD5)、固体悬浮物(SS)、阴离子表面活性剂(LAS)的平均去除率分别为80.87%、80.70%、67.73%、77.24%、60.98%、92.64%。但该湿地系统对氮、磷和SS的净化能力仍有一定的波动性,在冬季尤为突出。研究结果为后期生态-生化组合湿地工艺和管理的改进提供了数据支撑和理论基础,为生态-生化组合人工湿地生态系统的推广和示范研究提供了直接的理论依据和实践经验。

Treatment Effect of Combined Ecological and Biochemistry Wetlands on Disposing Rural Domestic Sewage

In this paper, purifying efficiency and treatment effect on rural domestic sewage is investigated within a combined ecological and biochemistry wetlands in Luqiao Town of Jiangyin city. Based on the monitoring data, purification capacity of comprehensive ecological and biochemical pool, clean pool and clean channel were assessed in this paper. The results demonstrated that combined ecological and bio- chemistry wetland had a good capacity in treating with nitrogen, phosphorus, chemical oxygen demand(COD), 5th biological oxygen demand (BOD5), suspended solids(SS)and anionic surfactan(tLAS). The remove rates for these pollutants were 80.87%, 80.70%, 67.73%, 77.24%, 60.98%, 92.64% respectively. However, the purification capacity on nitrogen, phosphorus, and SS had some volatility, especially it happened in winter. The finding and results in this paper is helpful not only in providing data and theoretical basis for later improvements on technology in combined ecological and biochemistry wetland, but also in revealing the theoretical basis and practical experience for promotion and demonstration research of constructed wetland.