Composite artificial wetland treatment system with enhanced phosphorus removal function

Abstract

The invention provides a composite artificial wetland treatment system with an enhanced phosphorus removal function. The system comprises a three-stage anaerobic tank body, a vertical flow artificialwetland tank body and a horizontal submerged flow artificial wetland tank body, wherein the vertical flow artificial wetland tank body and the horizontal submerged flow artificial wetland tank body are separated through a vertical partition plate, the three-stage anaerobic tank body, the vertical flow artificial wetland tank body and the horizontal submerged flow artificial wetland tank body are filled with combined filling, first filling and second filling, the three-stage anaerobic tank body is communicated with the vertical flow artificial wetland tank body through a water inlet pipe, a water distribution pipe is horizontally laid on the top of the three-stage anaerobic tank body, a water collecting pipe is horizontally laid on the bottom of the three-stage anaerobic tank body, an inletend of the water distribution pipe is communicated with the water inlet pipe, an outlet end of the water collecting pipe is communicated with the bottom end of a vertically arranged flow guiding pipe, a top elbow of the flow guiding pipe penetrates through the vertical partition plate to be placed on the top of the horizontal submerged flow artificial wetland tank body, enhanced phosphorus removal devices are uniformly arranged at intervals in the top elbow, each enhanced phosphorus removal device comprises a vent tube and an inner tube, the inner tube is filled with iron shavings, the lowertube wall of the vent tube is provided with a vent hole, and the tube wall of the inner tube is provided with a water hole. The composite artificial wetland treatment system with the enhanced phosphorus removal function has the advantages that the structure is simple, the treatment cost is low, and the removal ability for pollutants in the sewage, especially phosphorus is higher.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a compound artificial wetland treatment system for enhanced phosphorus removal. Background technique [0002] Due to the acceleration of the process of new rural areas in our country, the country attaches great importance to the problem of rural water environment, and this problem is highlighted in the important conference on water. Rural domestic sewage is mostly discharged directly into water bodies without treatment, causing great harm to groundwater resources and the rural ecological environment. It is an important environmental problem facing rural sewage treatment. However, my country's rural geographical environment and economy are quite different, and the requirements for rural domestic sewage treatment have also been improved. The previous technical requirements can no longer meet the current rural living standards and requirements, and the water qua...

AI Technical Summary

Problems solved by technology

However, due to the improvement of the overall living standards of our people, the concentration of pollutants discharged into sewage has also increased rapidly, especially the increase in the concentration of nutrients such as nitrogen and phosphorus, which is likely to cause eutrophication of water bodies.

Although the previous technologies have taken measures in the removal of nitrogen and phosphorus, either the removal efficiency is limited or the cost is high, so it is not suitable for sewage treatment in rural areas

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