Advanced water treatment method by utilizing artificial floating island wetland

Abstract

The invention provides an advanced water treatment method by utilizing an artificial floating island wetland, an artificial floating island is adopted as a carrier of an artificial wetland, the artificial wetland is floated on the water surface of a river channel or a lake out of water to form the artificial floating island, point source sewage on the river side or the lake bank is evenly distributed in the artificial floating island wetland by a water distributing device and not contacted with the external river water or lake water, and the sewage is treated by the artificial wetland in the artificial floating island wetland and directly drained after being treated. The invention is specially used for blocking sewage that is directly drained to water bodies, such as river channels, lakes, and the like and achieves landscape water drainage after advanced treatment. The invention fully utilizes the areas of the river channel and the lake body, does not influence flood control and stagnant water drainage or occupy the land area, has better water treatment effect compared with the common artificial floating island technology and achieves the same effect with the artificial wetland on the land. The invention has very large application potential in the drainage standard administration to tail water of sewage plants, industrial, living and commercial pollution point sources concentrated in urban areas.

Description

technical field [0001] The invention belongs to the technical field of environmental protection engineering and water treatment, and in particular relates to a method for advanced treatment of water by using artificial floating island wetlands. Background technique [0002] Although the industrial, domestic and commercial point source sewage in urban areas is intercepted by the pipe network and then treated by the centralized sewage treatment plant for primary or secondary treatment to meet environmental protection requirements, its various concentrations are still higher than the surface landscape water standards (GB3838- 2002), often leading to the deterioration of discharge rivers and lake water bodies. At present, the advanced treatment of tail water of sewage treatment plants has become an urgent problem to be solved in various regions. [0003] The conventional solution is to set up artificial floating islands in the river, which can be absorbed by plant roots to assi...

AI Technical Summary

Problems solved by technology

However, at present, the cost of advanced treatment using activated carbon or membrane treatment is expensive, and sewage treatment plants cannot afford it for a long time.

[0004] The artificial wetland ecological advanced treatment method on land works well and can greatly reduce the treatment cost, but the disadvantage is that it occupies a large area, and its popularization and application is limited in urban areas where land is in short supply.

If the existing rivers and lakes are filled up to build artificial wetlands, it may affect flood control and drainage, and it will not be possible to promote the implementation

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