季节对不同人工湿地处理农村生活污水效果的影响研究

Study on the effect of seasons on the treatment of rural domestic sewage by different constructed wetlands

人工湿地系统是目前处理农村生活污水最理想的方法之一。利用人工生态系统基质、湿地植物、微生物构成的生态系统,处理农村生活污水中的总氮、总磷、氨氮、COD,从而实现水质的净化。通过8月份到次年7月份1年的试验可知,不同季节农村生活污水中的污染物质有较大的差别,其去除率夏季优于秋季,秋季优于春季,春季优于冬季。不同人工湿地系统的处理效果也有较大的差别,潜流型人工湿地系统对总氮、总磷、氨氮、COD的平均去除率均优于表流型人工湿地系统。通过研究可为人工湿地处理农村生活污水提供使用实践和理论指导。

Constructed wetland system is one of the most ideal methods to treat rural domestic sewage at present.The ecosystem composed of artificial ecosystem matrix, wetland plants and microorganisms is used to treat the total nitrogen, total phosphorus, ammonia nitrogen and COD in rural domestic sewage for the realization of water purification. The one-year test from August to July of the next year shows that there are great differences in the pollutants in rural domestic sewage in different seasons. Its removal rate is better in summer than in autumn,autumn than in spring, and spring than in winter. The treatment effects of different constructed wetland systems are also quite different. The average removal rate of total nitrogen, total phosphorus, ammonia nitrogen and COD of subsurface flow constructed wetland system is better than that of surface flow constructed wetland system. The research can provide practical and theoretical guidance for the treatment of rural domestic sewage by constructed wetlands.