In situ ecological purification method for effectively improving water quality of riverway

Abstract

The invention relates to an in situ ecological purification method for effectively improving water quality of a riverway and belongs to the technical field of ecological treatment of a low-pollution water body. According to the method, compound ecological floating islands are built in the riverway, perennial aquatic plants are planted on the floating islands, plant roots are utilized to purify water quality and convey oxygen to the water body, elastic biological fillers are hung under the floating islands, and the elastic biological fillers provide attachment growth spaces for indigenous microorganisms; the riverway is further internally provided with a water raising and aeration device used for aeration oxygenation of the riverway water body so as to promote growth and reproduction of aerobic micro-organisms; part of the water body can be further conveyed to the other end of the riverway through a backflow water pump at one end of the riverway by means of a backflow water pipe, and circular flow is formed. Compared with the prior art, the environment for synchronous growth of the aquatic plants and the microorganisms is built in the riverway water body, flow of the water body is formed, the self-purification capacity of the water body can be effectively improved by means of the measures, and formation of a benign water ecological system of the riverway is facilitated.

Description

technical field [0001] The invention relates to an in-situ ecological purification method for effectively improving river water quality, and belongs to the technical field of low-pollution water ecological treatment. Background technique [0002] With the acceleration of urbanization, the pollution of urban life has increased significantly, which has brought great challenges to the protection of urban water environment. Especially in the Jiangnan Plain river gate-controlled water bodies, the urban Duantou River and cecum rivers are generally suffering from serious water eutrophication and poor water quality due to long-term retention of river water, seriously affecting the overall urban water environment. How to improve the water quality of the urban Duantou River and Cecum River has always been the focus of attention. [0003] The existing river restoration technology is often planting aquatic plants in the river, intending to remove pollutants such as nitrogen and phospho...

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Problems solved by technology

[0003] The existing river restoration technology is often planting aquatic plants in the river, intending to remove pollutants such as nitrogen and phosphorus through the growth of plants, but engineering practice has proved that it is difficult to obtain high pollutant removal efficiency solely by plant growth; The enhanced bypass purification technology to maintain the water quality of the river requires a larger treatment capacity and a shorter cycle, so the construction scale and investment of the bypass purification system will be large, and the operating cost will be high, and the ecological environment of the river in situ Self-purification efficiency has not been well utilized and brought into play

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