The self-circulation of landscape water can not fundamentally solve the problem of poor water quality, because there are still suspended solids in the water body, and the transparency of the water body will still decline.
Usually, ecological control is given priority to, supplemented by manual control.
For example, firstly, the phytoplankton in the lake is removed by asymmetric fiber filtration equipment, photocatalytic sterilization and algae removal equipment and lake plug flow system, and at the same time, the growth of phytoplankton in the lake is inhibited during the operation of the system. It is necessary to ensure that the shallow water area is crystal clear and crystal clear, so as to create conditions for the restoration of aquatic vegetation. On this basis, the submerged vegetation and emergent vegetation of the lake are restored, and submerged plants and emergent plants are planted along the shallow water area of the lake. It can not only beautify the artificial lake, but also increase the biodiversity of the artificial lake, establish a complex and stable biological chain, reduce various pollutants in the water body, and prevent eutrophication of the water body from ecology. At the same time, submerged plants will secrete chemicals to inhibit the reproduction of algae, such as Ceratophyllum, Myriophyllum, Valsalva and so on. 4- 10 biological floating islands are set in the middle of the lake and its periphery to increase the landscape effect of the lake, reduce nutrients such as N and P in the lake, inhibit the growth of algae in the water through the allelopathy of aquatic plants, restore the clean aerobic ecosystem of the lake, and maintain the clear and green landscape effect of the lake.