寒冷地区应用人工湿地处理污水研究进展＊

低温影响人工湿地污水的处理效果,限制了人工湿地在寒冷地区的推广应用。文章综合分析了影响寒冷地区人工湿地污水处理效果的因素,提出:潜流式的人工湿地具有一定的保温特点,在潜流湿地土壤上面铺盖一定厚度的覆盖物可以提高保温效果,再选择科学合理的工艺流程——复合垂直流等可提高人工湿地的污水处理效率。有关实例也证明:通过合理的设计,人工湿地可以在寒冷地区成功越冬。

Progress of Sewage Treatment by Constructed Wetland in Cold Region

Disposal effect of wastewater by constructed wetland was influenced by low temperature. And the extensive application of constructed wetland in cold region was restricted. Through synthetically analyzing, the factors that influenced the disposal effect of wastewater in cold region were presented. Subsurface flow constructed wetland has the characteristic of heat preservation, covered with a little thickness superstratum, the heat preservation effect could be improved. Combined with logical techniques, integrated vertical flow constructed wetland might improve the effect of wastewater treatment. Some actual cases also indicated that through logical techniques, the constructed wetland could work effectively during the winter in cold region.