Constructed wetland and plant pond joint treatment system for tail water advanced treatment

Abstract

The invention discloses a constructed wetland and plant pond joint treatment system for tail water advanced treatment. The constructed wetland and plant pond joint treatment system comprises a surface flow constructed wetland, a first-stage plant pond and a second-stage plant pond, which are arranged in a stepped manner from top to bottom, wherein water-distributing water level adjusters are respectively arranged between the surface flow constructed wetland and the first-stage plant pond, and between the first-stage plant pond and the second-stage plant pond; an aquatic plant is planted into the surface flow constructed wetland; and water surface plants and riparian plants are planted into the first-stage plant pond and the second-stage plant pond. The constructed wetland and plant pond joint treatment system runs by completely utilizing an automatic-flow manner, does not generate the operating cost, is simple in management and maintenance, and has high application value.

Description

technical field [0001] The invention belongs to the technical field of ecology and environmental protection, and in particular relates to a combined treatment system of an artificial wetland and a plant pond for advanced treatment of tail water. Background technique [0002] At present, most of the sewage treatment plants are implementing the second-level or first-level B discharge standards in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002). To achieve the first-level A discharge standards, it is generally necessary to increase the depth treatment process, which will greatly increase the cost of sewage treatment. Constructed wetland sewage treatment technology is a composite process combining natural purification and artificial treatment. It mainly uses the action of substrates, plants and microorganisms to purify sewage. It has the advantages of less investment, simple operation, and low maintenance and operation costs. It can not only...

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Problems solved by technology

[0005] In order to solve the problem of high pollutant content in the effluent of existing urban sewage treatment plants, to alleviate the continuous pressure of tail water on the water environment, and to overcome the shortcomings of existing sewage treatment technologies, the present invention provides a surface flow constructed wetland and The plant pond combined treatment system is used for the advanced treatment of tail water, which can effectively solve the problem of high pollutant content in the effluent of existing urban sewage treatment plants, relieve the continuous pressure of tail water on the water environment, and treat the effluent to meet the national urban sewage discharge Level A standard, while beautifying the surrounding landscape

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