Biological retention device for controlling rainwater non-point pollution on two sides of river channel and design method of biological retention device

A technology of bioretention and non-point source pollution, applied in water supply installations, drainage structures, sustainable biological treatment, etc., can solve the problems of inability to collect and use rainwater, waste of water resources, etc., to reduce the heat island effect, avoid waste, and achieve small scale. Effect

Pending Publication Date: 2017-11-24
重庆环投生态环境监测网络与工程治理有限公司
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Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is that the existing green be...

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  • Biological retention device for controlling rainwater non-point pollution on two sides of river channel and design method of biological retention device
  • Biological retention device for controlling rainwater non-point pollution on two sides of river channel and design method of biological retention device
  • Biological retention device for controlling rainwater non-point pollution on two sides of river channel and design method of biological retention device

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Embodiment Construction

[0090] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.

[0091] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0092] Such as figure 1 As shown, the rainwater sand settling well 1 of the bioretention device for controlling rainwater non-point source pollution on both sides of the river channel provided by the embodiment of the present invention is connected to the bioretention zone 2 through the overflow port; Water layer 3, planting soil layer 4, sand filter layer 5, gravel layer 6 and original soil layer 7; a geotextile layer 8 is laid between the planting soil layer and the sand filter layer, and between the sand filter layer and the gravel layer An anti-seepage film layer 9 is laid between the gravel layer and the original soil layer; a ...

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Abstract

The invention belongs to the technical field of water resource environment protection and discloses a biological retention device for controlling rainwater non-point pollution on two sides of river channel and a design method of the biological retention device. The biological retention device is characterized in that the rainwater sand settling wells of the device are communicated with biological retention belts through overflow ports; each biological retention belt sequentially comprises a water storage layer, a planting soil layer, a sand filtering layer, a gravel layer and an original soil layer which are laid from top to bottom; a geotextile layer is laid between each planting soil layer and the corresponding sand filtering layer, and a geotextile layer is laid between each sand filtering layer and the corresponding gravel layer; an impermeable membrane layer is laid between each gravel layer and the corresponding original soil layer; water-permeable blind pipes are inserted in the bottoms of the gravel layers and communicated with rainwater inspection wells excavated in one side of the biological retention belts. The biological retention device has the advantages that the device is simple, high in flexibility, unlimited by sites, small in size, applicable to different regions of a city, and the like; meanwhile, the device is a small ecological system and can beautify environments and relieve the heat island effect of the city.

Description

technical field [0001] The invention belongs to the technical field of water resources environmental protection, and in particular relates to a biological retention device and a design method thereof for controlling rainwater non-point source pollution on both sides of a river course. Background technique [0002] Bioretention ponds can not only stagnate rainwater runoff, but also achieve water purification through the physical, chemical and biological synergies of plants, soil and microorganisms. It is an important technical means for the construction of sponge cities. Bioretention facilities are similar to vegetation shallow ditches and buffer zones. Plants are planted in low-lying areas, and small-flow runoff rainwater is treated through plant interception and soil filtration retention. However, the existing green belts cannot collect and utilize the treated rainwater, resulting in a certain waste of water resources. [0003] To sum up, the problem existing in the prior ...

Claims

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Application Information

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IPC IPC(8): C02F3/32E03F1/00E03F5/02E03F5/04
CPCE03F1/002E03F5/02E03F5/0403C02F3/32C02F2103/001Y02A30/60Y02W10/10
Inventor 张旭杜伟由永飞谭人伟徐警卫舒健
Owner 重庆环投生态环境监测网络与工程治理有限公司
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