Composite ecological treatment method for intercepting farmland recession pollutants

A technology for ecological treatment and pollutants, which is applied in the direction of water pollutants, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as the single function of the artificial wetland purification system and the quality of effluent water that cannot meet the specified requirements. , to achieve the effect of saving water resources and reducing the content of pollutants

Inactive Publication Date: 2021-02-12
SHENYANG UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a compound ecological treatment method for intercepting pollutants in farmland receding water. The method of the present invention can alleviate the continuous pressure brought by farmland receding water to the natural water environment, and overcome the technical deficiencies in the existing farmland receding water treatment. , effectively solve the problems of the single function of the artificial wetland purification system, and the quality of the effluent water cannot meet the specified requirements, strengthen the removal effect of organic matter, nitrogen and phosphorus in the water, reduce the wetland footprint, reduce the wetland load, prevent wetland clogging, and achieve high efficiency The purpose of low consumption, while beautifying the environment landscape

Method used

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  • Composite ecological treatment method for intercepting farmland recession pollutants

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Embodiment 1

[0046] The concentration of water quality in a farmland is: COD 142.55-150.52 mg / L, ammonia nitrogen 41.86-44.32 mg / L, TP 4.13-4.57 mg / L, TN 45.01-47.67mg / L, C:N 3.5, pH 6.5-7.5 .

[0047] According to the distribution of farmland irrigation canals, select fields that can use the elevation difference to realize natural water inflow and outflow. Build ecological ditches and branch canals in high-lying fields. The canals are arranged at intervals in the farmland and communicate with the branch canals, and are used to discharge the farmland retreat water entering the canals into the branch canals. The local herb plants 3 are planted on the side slope 1 and the bottom 2 of the canals, and the canals enter the branch canals A multi-level stone step 4 made of gravel is set at the entrance of the farmland to realize the interception of sediment and large particle suspended matter in the receding water of the farmland. An impermeable soil interception dam 5 is set at an interval of ...

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Abstract

The invention discloses a composite ecological treatment method for intercepting farmland recession pollutants, relates to a farmland ecological treatment system, and provides an ecological ditch-plant pond-constructed wetland composite system for ecologically intercepting farmland recession pollutants and a construction method thereof. The method can relieve the continuous pressure of farmland recession on the natural water environment, overcome the technical defects of existing farmland recession treatment, effectively solve the problems that an artificial wetland purification system is single in function, the effluent quality cannot meet the specified requirements and the like, strengthen the removal effect on organic matter, nitrogen and phosphorus in water, reduce the occupied area ofthe wetland, reducing the wetland load, prevent wetland blockage, achieve the purposes of high efficiency and low consumption, and beautify the environmental landscape. The system is low in investment and operation cost, convenient to operate, free of electromechanical equipment and operation energy consumption and suitable for being applied to ecological interception treatment engineering of farmland returned water pollutants greatly affected by natural rainfall.

Description

technical field [0001] The invention relates to a farmland ecological treatment system, in particular to a composite ecological treatment method for intercepting farmland water receding pollutants. The invention relates to an ecological ditch-plant pond-artificial wetland composite system for ecologically intercepting pollutants in farmland receding water. Background technique [0002] In recent years, due to the unreasonable application of chemical fertilizers and pesticides in the process of planting crops, coupled with the erosion of flood irrigation and rainstorm runoff, a large amount of farmland dewatering has been formed, and a large amount of pollutants such as N and P are carried in the form of surface runoff and soil seepage. Into rivers, lakes and other water bodies, causing serious non-point source pollution to receiving water bodies, exacerbating the eutrophication process of water bodies, and seriously restricting the sustainable development of economy and envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/30C02F101/30C02F101/16C02F101/10
CPCC02F3/32C02F3/302C02F2101/30C02F2101/16C02F2101/105
Inventor 董怡华张盛宇陈锋师晓春李亮
Owner SHENYANG UNIV
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