Composite curtain wall for efficiently intercepting pollutants in farmland surface source

A technology for pollutants and curtain walls, applied in the field of agricultural non-point source pollution control, can solve the problems of large area and limited promotion and application, achieve the effect of small investment, simple daily management and maintenance, and improve the effect of sewage treatment and treatment capacity

Inactive Publication Date: 2014-09-17
HOHAI UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Significant research results have been achieved in terms of the efficiency and mechanism of sewage treatment in constructed wetlands, and the functions of various components in wetland systems. However, there are still some key technical issues that need to be resolved for the wide-scale application of this technology. For example, the combination of wetlands a

Method used

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  • Composite curtain wall for efficiently intercepting pollutants in farmland surface source
  • Composite curtain wall for efficiently intercepting pollutants in farmland surface source
  • Composite curtain wall for efficiently intercepting pollutants in farmland surface source

Examples

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Embodiment 1

[0023] This demonstration project is located in the Vegetable and Flower Research Institute of Jiangning District, Nanjing City, Jiangsu Province. The top view of the farmland layout is as follows figure 2 shown. The pond 5 of this project is arranged in the open air, so a filter 7 is installed at the head hub to simply filter the irrigation water and remove some impurities.

[0024] Such as figure 1 As shown, a surface plant buffer zone 1, plant slope protection 2, water catchment area 3 and anti-pollution curtain wall 4 are arranged in sequence along the direction of the farmland drainage outlet to the field drainage ditch; wherein, the surface plant buffer zone 1 is planted with Sagittarius, Vegetable slope protection 2 is planted with wild bamboo grass, the slope is 1:1, and the length is 85cm. The height of catchment area 3 is lower than the surface plant buffer zone 1 and antifouling curtain wall 4. Iris is planted in catchment area 3, and the antifouling curtain wall ...

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Abstract

The invention provides a composite curtain wall for efficiently intercepting pollutants in a farmland surface source. The composite curtain wall is characterized in that a surface plant buffer zone, a plant protection slope, a water collection zone and an anti-pollution curtain wall are arranged in sequence along the direction from a farmland drain outlet to a field drain ditch; the water collection zone is lower than the surface plant buffer zone and the anti-pollution curtain wall in height; the anti-pollution curtain wall is formed by gravel, filled soil or the combination of the gravel and the filled soil, and the shape of the cross section of the anti-pollution curtain wall is trapezoid. According to the composite curtain wall provided by the invention, the pollutants discharged by the farmland can be intercepted and purified through plant absorption and physical absorption filter, the nitrogen and phosphorus pollutants in the farmland surface source can be effectively prevented from entering water body such as a river, and the composite curtain wall has good ecological benefit and the popularization and application value.

Description

technical field [0001] The invention belongs to the technical field of agricultural non-point source pollution control, and in particular relates to a composite curtain wall for efficiently intercepting farmland non-point source pollutants. Background technique [0002] The rice planting area in southern my country is large, the level of nitrogen fertilizer application is high, and the rainfall during the main growth period of rice is mostly in the form of torrential rain. The unemployment of nitrogen and phosphorus flow caused by unreasonable irrigation and drainage has become one of the main sources of agricultural non-point source pollution in southern China. The development of water circulation and purification systems in southern rice-growing areas, focusing on the design and development of intercepting and filtering ecological biological barriers based on the characteristics of farmland non-point source pollution sources, is an inevitable requirement for protecting the ...

Claims

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Application Information

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IPC IPC(8): E02B3/00E02B3/10C02F3/32
CPCY02W10/10
Inventor 李圆圆邵孝侯金斌斌夏林
Owner HOHAI UNIV
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