复合潜流人工湿地对北方河流水质的净化效果研究

Research on Purification Effect of Hybrid Subsurface Flow Constructed Wetland on Water Quality of River in North China

综合水平流人工湿地和垂直流人工湿地的优点,在山西省沁河干流建设了复合潜流人工湿地,运行及水质检测结果表明:通过合理设计基质(填料)种类及粒径,采用水平流和垂直流结合工艺的复合潜流人工湿地能够克服国内人工湿地普遍除磷能力不足的缺点,取得较好的除磷效果,在冬季运行期也具有较好的效益,适宜用于水量、水质变化不大、对管理要求不高的北方河流微污染治理。

A hybrid subsurface flow constructed wetland was constructed on the mainstream of the Qinhe River in Shanxi Province, which combined with the advantages of horizontal subsurface flow constructed wetland and vertical subsurface flow constructed wetland. Operation and water quality detection results show that: with reasonable design of the type and particle size of substrate, this hybrid subsurface flow constructed wetland could overcome the disadvantage of low phosphorus removal rate in most of the domestic constructed wetlands and achieve better phosphorus removal effect. Besides, this hybrid subsurface flow constructed wetland has good effect in winter operation period, and is suitable for micro polluted rivers with less variation in water quality and water quality in the north China, whose management requirements are not high.