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A platform for research: civil engineering, architecture and urbanism
Treatment system for reducing farmland non-point source pollution
The invention relates to the technical field of comprehensive ecological restoration of environmental engineering, in particular to a treatment system for reducing farmland non-point source pollution. The system comprises a drainage ditch, the drainage ditch comprises a concave ditch section and a convex ditch section which are arranged at an interval, the convex ditch section comprises a soil layer, a first fine sand layer and a filter material layer, and part of the filter material layer is located in the first fine sand layer. The filter material layer comprises concrete and gravels. The concave ditch section comprises a soil layer, a second fine sand layer and a gravel layer. In the system provided by the invention, by arranging the concave ditch section, the convex ditch section, the filter material layer and the gravel layer, the water flow speed is reduced, the water flow precipitation time is prolonged, and the precipitation effect is improved, so that the interception effect of the filter material layer and the gravel layer on total suspended solids and the adsorption effect on pollutants such as total nitrogen and total phosphorus are effectively improved; and the capacity of the system for reducing pollutants in water flow is greatly enhanced, so that ecological in-situ remediation is facilitated, and the pollution load entering a water body is reduced.
本公开涉及环境工程综合生态修复技术领域，尤其涉及一种消减农田面源污染的处理系统，包括排水沟渠，排水沟渠包括间隔设置的凹形沟渠段和凸形沟渠段，凸形沟渠段包括土壤层、第一细砂层和滤料层，部分滤料层位于第一细砂层中，滤料层包括混凝土和碎石；凹形沟渠段包括土壤层、第二细砂层和碎石层。本公开提供的系统中，通过设置凹形沟渠段、凸形沟渠段、滤料层和碎石层，减小了水流速度，增加了水流的沉淀时间，提高了沉淀效果，从而有效提高了滤料层和碎石层对总悬浮固体的拦截作用，以及对总氮、总磷等污染物质的吸附作用，极大地增强了本系统削减水流中的污染物的能力，进而有利于进行生态原位修复，减少进入水体的污染负荷。
Treatment system for reducing farmland non-point source pollution
The invention relates to the technical field of comprehensive ecological restoration of environmental engineering, in particular to a treatment system for reducing farmland non-point source pollution. The system comprises a drainage ditch, the drainage ditch comprises a concave ditch section and a convex ditch section which are arranged at an interval, the convex ditch section comprises a soil layer, a first fine sand layer and a filter material layer, and part of the filter material layer is located in the first fine sand layer. The filter material layer comprises concrete and gravels. The concave ditch section comprises a soil layer, a second fine sand layer and a gravel layer. In the system provided by the invention, by arranging the concave ditch section, the convex ditch section, the filter material layer and the gravel layer, the water flow speed is reduced, the water flow precipitation time is prolonged, and the precipitation effect is improved, so that the interception effect of the filter material layer and the gravel layer on total suspended solids and the adsorption effect on pollutants such as total nitrogen and total phosphorus are effectively improved; and the capacity of the system for reducing pollutants in water flow is greatly enhanced, so that ecological in-situ remediation is facilitated, and the pollution load entering a water body is reduced.
本公开涉及环境工程综合生态修复技术领域，尤其涉及一种消减农田面源污染的处理系统，包括排水沟渠，排水沟渠包括间隔设置的凹形沟渠段和凸形沟渠段，凸形沟渠段包括土壤层、第一细砂层和滤料层，部分滤料层位于第一细砂层中，滤料层包括混凝土和碎石；凹形沟渠段包括土壤层、第二细砂层和碎石层。本公开提供的系统中，通过设置凹形沟渠段、凸形沟渠段、滤料层和碎石层，减小了水流速度，增加了水流的沉淀时间，提高了沉淀效果，从而有效提高了滤料层和碎石层对总悬浮固体的拦截作用，以及对总氮、总磷等污染物质的吸附作用，极大地增强了本系统削减水流中的污染物的能力，进而有利于进行生态原位修复，减少进入水体的污染负荷。
Treatment system for reducing farmland non-point source pollution
消减农田面源污染的处理系统
WANG DONGSHENG (author) / ZHANG BAO (author) / XU SHENGMING (author) / JIN LIYA (author)
2021-11-02
Patent
Electronic Resource
Chinese
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