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Steep slope buffer zone cascade treatment system and construction method for rain runoff collection and purification

A treatment system and buffer zone technology, applied in runoff/rainwater treatment, chemical instruments and methods, sustainable biological treatment, etc., can solve problems such as soil erosion, short residence time of rain runoff in steep slope buffer zone, water pollution, etc., and achieve purification Obvious functions, increased landscaping functions, and strong operability

Active Publication Date: 2019-03-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of short residence time of rain runoff in the existing steep slope buffer zone, and a large amount of sediment and pollutants in the rain runoff enter the water body to cause water and soil loss and water body pollution, and provide a high-efficiency rain runoff collection and purification The cascade treatment system and construction method of the steep slope buffer zone

Method used

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  • Steep slope buffer zone cascade treatment system and construction method for rain runoff collection and purification
  • Steep slope buffer zone cascade treatment system and construction method for rain runoff collection and purification

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specific Embodiment approach 1

[0013] Specific implementation mode 1: The steep slope buffer zone cascade treatment system for collecting and purifying rain runoff in this embodiment consists of an arbor ecological fence A, a first-level ecological filter B, a shrub ecological fence C, a second-level ecological filter D, a herbaceous ecological fence E, and three The first-level ecological filter B, the second-level ecological filter D and the third-level ecological filter F are dug step by step on the steep slope of the embankment from high to low. The dam body of the ecological filter B facing the subgrade surface forms an arbor ecological fence A, and arbor plants 1 are planted on the dam surface of the arbor ecological fence A, forming between the primary ecological filter B and the secondary ecological filter D Shrub ecological fence C, shrub plants 2 are planted on the dam surface of shrub ecological fence C, herb ecological fence E is formed between the secondary ecological filter D and the tertiary e...

specific Embodiment approach 2

[0016] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the gradient α of the steep embankment slope is 15°-30°.

specific Embodiment approach 3

[0017] Specific embodiment three: this embodiment is different from specific embodiment one or two in that the arbor plant 1 planted on the dam surface of the arbor ecological hedge A is a weeping willow, and the No. 1 aquatic plant 4 is a reed.

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Abstract

The invention provides a steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and a construction method, belongs to the field of water body environment restoration, and aims at solving the problems that an existing steep-slope buffer strip is short in retention time of a rain runoff, a large amount of silt and pollutants in the rain runoff enter a water body in a standard exceeding mode, and water and soil loss and water body pollution are caused. According to the steep-slope buffer strip gradient treatment system, an arbor ecological hedge, a first-stage ecological filter, a shrub ecological hedge, a second-stage ecological filter, a herbaceous plant ecological hedge, a third-stage ecological filter and an aquatic plant functional zone are sequentially formed from high to low along the bank slope face of the buffer strip, and different plants are planted on all the ecological hedges and all stages of the ecological filters. According to the steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and the construction method, the gradient ecological hedges and the aquatic plant functional zone are arranged, and the slope drop of the steep-slope rain runoff is retarded; by means of diversity configuration of plants with deep and shallow roots, a dam is fixed, and the silt is blocked; by means of the multistage ecological filters, the rain runoff retention time is prolonged, the water storage rate and the infiltration rate are increased, and the water purification efficiency is improved.

Description

technical field [0001] The invention belongs to the field of water body environment restoration, and in particular relates to a cascade treatment system and construction method for a steep slope buffer zone with high-efficiency rain runoff collection and purification. Background technique [0002] With the degradation of environmental ecology caused by human activities, the riparian (lakeside) buffer zone degrades and shrinks, with insufficient area and low function. Especially in the steep slope buffer zone, due to the short residence time of rain runoff and the large runoff per unit time, it cannot perform the function of ecological interception and purification, resulting in the ineffective storage of rainwater. One of the important factors of decline. Contents of the invention [0003] The purpose of the present invention is to solve the problem of short residence time of rain runoff in the existing steep slope buffer zone, and a large amount of sediment and pollutant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
CPCC02F3/32C02F2103/001Y02W10/10
Inventor 王立董静马放梁雄伟赵廷张雪
Owner HARBIN INST OF TECH
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