Rainwater bio-retention pond structure with submerging layers and method for constructing rainwater bio-retention pond structure

A technology of bioretention ponds and retention ponds, applied to the structure and construction of rainwater bioretention ponds with submerged layers, can solve the problems of poor pollutant treatment effect, difficult plant growth, and inability to store water sources, etc., to achieve enhanced physical Treatment capacity, increasing nitrification and denitrification, and improving the effect of nitrogen and phosphorus removal

Pending Publication Date: 2018-10-23
江苏东恒环境控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the traditional rainwater bioretention pond is an open bioretention system, which often occurs internal blockage,

Method used

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  • Rainwater bio-retention pond structure with submerging layers and method for constructing rainwater bio-retention pond structure
  • Rainwater bio-retention pond structure with submerging layers and method for constructing rainwater bio-retention pond structure
  • Rainwater bio-retention pond structure with submerging layers and method for constructing rainwater bio-retention pond structure

Examples

Experimental program
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Effect test

Example Embodiment

[0067] Example 1

[0068] Establish 5m beside a city road 2 The small biological retention pond filters and purifies the rainwater runoff from the roads on both sides, and discharges it to the rainwater pipe after purification. Among them: the overall height of the retention pond is 1m, the height of the retention layer 1 is 200mm, the height of the filter layer is 400mm, the height of the transition layer is 300mm, the height of the drainage layer is 100mm, the maximum penetration rate does not exceed 360mm / hr, and the chemical content and particle size distribution properties are all Meet the required parameters; among them, add 3kg of organic fertilizer to the 0-100mm filler of the filter layer for plant growth and survival; add 70kg of activated carbon and zero-valent iron mixture to the filter layer; add 36kg of composite microbial embedded particle filler to the transition layer. After the facility is operating stably, test and analyze the main pollutants in rainwater runof...

Example Embodiment

[0071] Example 2

[0072] Build 300m in a park 2 The large biological retention pond purifies the rainwater runoff collected from the surrounding green spaces, roads, and parking lots. At the same time, the influent water mixes part of the overflow runoff from the surrounding communities, and is discharged into the river after purification. Among them: the overall height of the retention pond is 1.35m, the height of the retention layer 1 is 250mm, the height of the filter layer is 600mm, the height of the transition layer is 300mm, the height of the drainage layer is 200mm, the maximum penetration rate does not exceed 500mm / hr, the chemical substance content and particle size distribution properties All meet the required parameters in the text, among which, 100kg of organic fertilizer is uniformly added to the 0-100mm filler of the filter layer; 1000kg of zeolite and zerovalent iron mixture is added to the filter layer; 100kg of composite microbial embedded particle filler is adde...

Example Embodiment

[0075] Example 3

[0076] In a large parking lot, build 20m 2 The purified biological retention pond is used to purify the runoff collected from the parking lot, and then discharged into the landscape pond after purification. Among them: the overall height of the retention pond is 1.2m, the height of the retention layer 1 is 300mm, the height of the filter layer is 500mm, the height of the transition layer is 300mm, the height of the drainage layer is 100mm, the maximum penetration rate does not exceed 500mm / hr, the chemical substance content and particle size distribution properties All meet the required parameters contained in the text, including adding 12kg of organic fertilizer to the 0-100mm filler; adding 200kg of activated carbon and zero-valent iron mixture to the filter layer; adding 100kg of composite microbial embedded particle filler to the transition layer. After the operation of the facility is stable, the main pollutants in the rainwater runoff before and after the...

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Abstract

The invention provides a rainwater bio-retention pond structure with submerging layers and a method for constructing the rainwater bio-retention pond structure. The rainwater bio-retention pond structure is mainly applied to reducing rainwater runoff flood peaks and managing non-point source pollution due to rainwater runoff and particularly can be applied to purifying urban and rural input type non-point source pollution. The rainwater bio-retention pond structure which is a bio-retention pond sequentially comprises a retention layer, a filter layer, a transition layer and a drain layer. Theretention layer, the filter layer, the transition layer and the drain layer are sequentially constructed from bottom to top; the retention layer is used for storing rainwater, and the transition layer, the filter layer and the drain layer are filled with medium raw materials. The rainwater bio-retention pond structure and the method have the advantages that the transition layer and the drain layerare used as the submerging layers, accordingly, the rainwater can be effectively stored, anaerobic environments can be provided, and the pollutant removal capacity can be enhanced; fillers of the various layers in the pond have interior relations, and definite particle size distribution requirements are applied to the fillers; plant growth fertilizers, adsorption granules, slow-release carbon sources and compound microbial preparations or compound microbial embedded granules are mixed with the various layers in the pond, accordingly, pollution substances in the rainwater can be assuredly efficiently treated by the bio-retention pond for a long term, and obvious nitrogen and phosphorus removal effects can be particularly realized.

Description

technical field [0001] The invention relates to the technical field of water environment treatment, in particular to a method that can effectively reduce the peak value and volume of rainwater runoff, and effectively remove solid suspended matter, nitrogen, phosphorus and other nutrients, heavy metals, pathogenic bacteria, and hydrocarbons contained in runoff pollution. The invention relates to a rainwater bioretention pond for filtering facilities of some trace organic pollutants, specifically a structure and a construction method of a rainwater bioretention pond with a submerged layer. Background technique [0002] Most of the rainwater bioretention ponds implemented at this stage use soil or sandy soil mixture to plant plants, and treat the rainwater that naturally infiltrates in the pond through the plant root system. Generally, an open design is adopted, that is, the rainwater is collected through the surface of the pond and naturally falls into the pond. penetrate into...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/32C02F3/30
CPCC02F3/302C02F3/32C02F3/341C02F2305/06C02F2209/10C02F2209/16
Inventor 胡玖坤李秀玉王淼张科峰
Owner 江苏东恒环境控股有限公司
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