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Reinforced composite packing used for non-point runoff pollution treatment

A composite filler and runoff technology, which is applied in the fields of runoff/rainwater treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of not paying attention to each layer of filler and blocking of retention facilities, and achieve enhanced physical treatment. capacity, efficient treatment, and the effect of improving the efficiency of nitrogen and phosphorus removal

Inactive Publication Date: 2019-01-29
DAJIANG ENVIRONMENT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the filling arrangement of existing layered rainwater detention facilities only focuses on the properties of each layer of filling, and does not pay attention to the relationship between each layer of filling, which leads to a large number of blockages in the detention facilities. For the treatment of rainwater runoff It has a certain negative impact, and it is necessary to consider the relationship between different layers to ensure a certain infiltration rate in order to achieve the effect of smooth drainage
[0004] In addition, the fillers of the existing retention facilities do not fully consider adding different functional substances in layers and removing different pollutants in a targeted manner. The effect of nitrogen and phosphorus removal, so as to obtain clean water

Method used

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  • Reinforced composite packing used for non-point runoff pollution treatment
  • Reinforced composite packing used for non-point runoff pollution treatment
  • Reinforced composite packing used for non-point runoff pollution treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Applied to the 5m beside the road in a certain city 2 In the small bioretention facility, the rainwater runoff from the roads on both sides is filtered and purified, and then discharged to the rainwater pipe after purification. Among them: the overall height of the filler is 0.8m, the height of the filter layer filler is 400mm, the height of the transition layer filler is 300mm, the height of the drainage layer filler is 100mm, the maximum permeation rate is not more than 360mm / hr, the chemical substance content and particle size distribution properties are in line with the required parameters , in which 3kg of organic fertilizer is added to the 0-100mm filler for plant growth and survival; 70kg of a mixture of activated carbon and zero-valent iron is added to the filter layer filler; 36kg of composite microbial-embedded granular filler with wood chips as a carbon source is added to the transition layer filler. After the facility is in stable operation, test and analyze...

Embodiment 2

[0082] 300m applied in a park 2 In the large-scale bioretention pond, the rainwater runoff collected by surrounding green spaces, roads, and parking lots is purified, and at the same time, the influent water is mixed with the overflow runoff of surrounding communities, and is discharged into the river after purification. Among them: the overall height of the filler is 1.1m, the height of the filter layer filler is 600mm, the height of the transition layer filler is 300mm, the height of the drainage layer filler is 200mm, the maximum permeation rate is not more than 500mm / hr, and the chemical substance content and particle size distribution properties are in line with the text. 100kg of organic fertilizer is evenly added to the 0-100mm filler; 1000kg of a mixture of zeolite and zero-valent iron is added to the filter layer filler; 100kg of composite microorganism-embedded granule preparation with corn cob and straw as solid carbon source is added to the transition layer filler ...

Embodiment 3

[0086] Applied to the 20m water catchment of a large parking lot 2 In the purification facility, it is mainly used to purify the runoff collected from the parking lot and discharge it into the landscape pool after purification. Among them: the overall height of the filler is 0.9m, the height of the filter layer filler is 500mm, the height of the transition layer filler is 300mm, the height of the drainage layer filler is 100mm, the maximum permeation rate is not more than 500mm / hr, the chemical substance content and particle size distribution properties are in line with the text 12kg of organic fertilizer is added to the 0-100mm filler; 200kg of activated carbon and zero-valent iron mixture is added to the filter layer filler; 100kg of composite microbial embedded particle filler with wood chips as the carbon source is added to the transition layer filler. After the facility is in stable operation, test and analyze the main pollutants in the rainwater runoff before and after p...

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Abstract

The invention provides a reinforced composite packing used for non-point runoff pollution treatment, which is mainly used for non-point pollution treatment due to runoff of rainwater, including introductive non-point pollution treatment for cities and countryside. The packing includes, successively from top to bottom, a filter packing layer, a transition packing layer and a water discharge packinglayer. The layers have inherent relationship with definite demand on granular size distribution, detailing to the percentages of the mediums in different granular size scopes. Meanwhile, chemical component content in the medium, pH value range and permeability coefficient of the medium are all specified; besides, fertilizers for growth of plants, adsorption granules, a slow-releasing carbon source and composite microbial preparations are blended with the packing layers, so that a biological detention pond can treat the pollutants in the rainwater for long period at high efficient, especiallyhaving significant treatment effect of nitrogen and phosphorus removal.

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 suspended solids, nitrogen, phosphorus and other nutrients, heavy metals, pathogenic bacteria, hydrocarbons and other substances contained in runoff pollution. It is a filler for filtering facilities of some trace organic pollutants, specifically a kind of reinforced composite filler that can be used for non-point source runoff pollution treatment. Background technique [0002] Most of the rainwater retention facility fillers implemented at this stage use soil or sandy soil mixture to cultivate plants, and promote the treatment of rainwater through plant growth, and a small number of rainwater bioretention fillers use layered structures. [0003] At present, the filling arrangement of existing layered rainwater detention facilities only focuses on the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
CPCC02F3/34C02F2103/001
Inventor 李秀玉胡玖坤王淼张科峰
Owner DAJIANG ENVIRONMENT CORP