波式潜流人工湿地对生活污水中磷的去除效果研究

通过试验测定波式潜流人工湿地（W—SFCW）与潜流人工湿地（SFCW）中基质、介质填料、植物在污水处理中所截留的磷含量，分析湿地各组成部分对磷的吸收作用，并对各组成部分的去除效果进行比较研究。试验进一步明确了W—SFCW和SFCW对磷的净化机理，从而为优化设计提供了基础。结果表明，在相同试验条件下，W—SFCW对TP的去除率比SFCW高。两种湿地系统中土壤和湿地植物截流吸附了较多的磷，石头填料对污水中的磷也有一定的吸附作用。其中，湿地植物芦苇比美人蕉对污水中磷的吸附作用更为明显。

Treatment Efficiency of Wavy Subsurface Constructed Wetland for Removal of Phosphorous from Household Wastewater

Since Wavy Subsurface Construeted Wetland called W-SFCW was applied on the sewage purification research, a lot of research has been conducted and a great progress has been obtained in this field. It has been proved that W-SFCW works significantly better in eliminating pollutants than traditional Subsurface Constructed Wetland （SFCW）. In this experiment, contents of phosphorus absorbed emporarily to substrate, padding and plant during the sewage treatment in both W-SFCW and SFCW were determined to analyze phosphorus absorption to compartment and to compare the removal efficiency. The experiment further clarified the mechanisms of phosphorus purification in W-SFCW and SFCW, namely wavy water flow inside W-SFCW contacted with the upper, lower and the middle soil level so frequently that it＇s pollutant removal efficiency was significantly improved. This provides foundation for further optimization design. The result showed： Firstly, TP removal efficiency of W-SFCW was higher than that of SFCW under the same test condition. Secondly, in two types of wetland systems, soil and wetland plants adsorbed more phosphorus than stone padding. As far as wetland plants concerned, reed adsorbed more phosphorus from the sewage than canna did.