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Multi-medium tidal flow artificial wetland device and method

A constructed wetland and multi-media technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as easy clogging treatment efficiency, small adsorption capacity, and low porosity , to achieve the effect of ensuring long-term efficient operation, ensuring no blockage, and avoiding secondary pollution

Active Publication Date: 2015-05-06
PEKING UNIV
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Problems solved by technology

[0003] However, the medium in the traditional constructed wetland sewage technology is mainly gravel and sand. Due to the characteristics of low porosity and small adsorption capacity, there are technical problems such as low hydraulic load, easy clogging and low treatment efficiency during operation.

Method used

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  • Multi-medium tidal flow artificial wetland device and method

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Embodiment Construction

[0020] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0021] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0022] Such as figure 1 As shown, the multi-media tidal flow constructed wetland device according to the specific embodiment of the present invention is designed as a horizontal tidal flow wetland, which selects modified multi-media filter materials, wetland plants and high-efficiency microorganisms to configure the constructed wetland, which provides for the treatment of heavy metal polluted water bodies. A device for a n...

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Abstract

The invention discloses a multi-medium tidal flow artificial wetland device and method. The artificial wetland device comprises anti-seepage layers, a water distribution tank and a filter tank, wherein the water distribution tank is formed by separating a tank body by virtue of the anti-seepage layers and internally provided with a porous polyurethane material and a water inlet pipe is arranged at the upstream side of the water distribution tank; the upstream side of the filter tank is communicated with the downstream side of the water distribution tank through a plurality of communication pipes, a multi-medium filtering material layer is arranged in the upstream space inside the filter tank and the downstream space inside the filter tank forms a water collecting tank. According to the multi-medium tidal flow artificial wetland device, by the inter-coordinated physical, chemical and biological actions of the multi-medium filtering material, wetland plants and efficient microbes, the media adsorption, ion exchange, co-precipitation, and efficient microbial adsorption reduction, fixed and biological extraction are organically combined so that the heavy metals in micro-polluted water are effectively removed and the secondary pollution of the heavy metals is prevented.

Description

technical field [0001] The invention relates to the field of water environment restoration, in particular to a multi-media tidal flow artificial wetland device and method. Background technique [0002] Constructed wetlands restore polluted water bodies through the physical, chemical and biological interactions between plants and media. , heavy metals, etc. can be effectively removed. With the continuous development of industry and social economy, heavy metal pollution in my country's water has threatened the lives of the people. Compared with the traditional technology of heavy metal treatment, constructed wetland technology has the advantages of convenient operation and management and low operating cost. It can not only have a good removal effect on heavy metals, but also avoid secondary pollution, so it has a good development prospect. Constructed wetlands have been used to treat sewage containing various heavy metals, including landfill leachate, industrial sewage, urba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 籍国东朱先芳
Owner PEKING UNIV
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