Constructing the water circulation system to maintain and improve the urban landscape water

In this article, artificial wetland and landscape river were used to build the water circulation system to maintain and improve the quality of urban landscape water and to prevent water eutrophication. According to the Liebig law of the minimum, it could be determined that TP played an important role in the process of eutrophication and TP (total phosphorus) was the primary constraint condition to control eutrophication. After the water circulation system operated, the TP content of the landscape river water was detected. The result showed that the TP content became stable. Compared the water quality of landscape river with the stagnant waters, through the 6 times samplings, the content of TP, ammonia nitrogen in the landscape river was lower than the stagnant waters. Through the assay of TP content and the contrastive experiments, the role of the water circulation system was proved.