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Plant screening and configuring method for improving operation effect of subsurface flow type constructed wetland in winter

A technology of constructed wetlands and configuration methods, which is applied in the field of plant selection and configuration of subsurface-flow constructed wetlands. It can solve problems such as poor landscape and poor operating results of constructed wetlands, and achieve simple management, good promotion and application value and prospects, and low operating costs. low effect

Inactive Publication Date: 2015-03-25
FUDAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to screen the plant species that can improve the stable operation effect of the subsurface flow constructed wetland and make reasonable configurations to solve the problems of poor winter operation and poor landscape of the constructed wetland and provide technical support for the popularization and application of the constructed wetland technology

Method used

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Embodiment Construction

[0012] The invention is based on the plant screening of the artificial wetland, and ensures the normal operation effect of the wetland and maintains the landscape of the wetland through the reasonable arrangement of the plants, and has a good development prospect. Sewage COD can be stably realized through plant screening and rational configuration of the present invention cr The main pollutants such as , TN and TP are reduced to the national urban sewage discharge level B standard, and the wetland landscape will not decrease with the change of seasons.

[0013] After a township in Jiangsu Province built a sewage treatment plant, the treated effluent reached the first-class B standard for urban sewage discharge. In order to further purify the treated sewage, a subsurface constructed wetland treatment system was constructed, with a square shape (50m×100m), and the selected filler was lightweight ceramsite, and the upper layer of the filler was a soil layer with a thickness of 10...

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Abstract

The invention belongs to the technical field of biological environment protection, and in particular relates to a plant screening and configuring method for improving an operation effect of a subsurface flow type constructed wetland in winter. Ligneous plants and herbaceous plants are screened out under the comprehensive consideration of the characteristics such as stain resistance and purification ability, growth property, rhizosphere enzyme activity, landscape property of the plants, and the grown plants are periodically maintained and managed. According to the method, a good operation effect of the constructed wetlands in winter is guaranteed, the landscape property of four seasons in the overall year is maintained, the promotion and application bottleneck of the wetlands is effectively solved, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of ecology and environmental protection, and in particular relates to plant screening and arrangement in subsurface flow artificial wetlands. Background technique [0002] The subsurface constructed wetland has a large hydraulic load and pollution load, and has a good removal effect on pollution indicators such as COD, SS, and heavy metals. If the operation process is managed properly, it can also effectively prevent the breeding of mosquitoes and flies and the generation of odors. Therefore, it is the current international research and development A constructed wetland treatment system that is widely used. [0003] Plants play a very important role in sewage purification in constructed wetlands. In addition to physical effects such as stabilizing the surface of the bed, improving filtration efficiency, heat preservation and antifreeze, and providing more adsorption sites for the growth of microorganisms, p...

Claims

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Application Information

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IPC IPC(8): C02F3/32A01G17/00A01G7/00
CPCA01G7/00A01G17/005C02F3/327Y02W10/10
Inventor 张继彪栾晓男黄威郑正田云飞
Owner FUDAN UNIV
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