Double-layer filler bioretention device capable of efficient denitrification and dephosphorization

A double-layer filler, nitrogen and phosphorus removal technology, applied in sustainable biological treatment, biological water/sewage treatment, water pollutants, etc., can solve the problems of descaling, low nitrogen, unstable removal effect, etc., and achieve remarkable results , easy to promote, easy to implement

Inactive Publication Date: 2016-06-01
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problems of descaling, low nitrogen and unstable removal effect existing in existing facilities, and provides a double-layer packing bioretention device for efficient nitrogen and phosphorus removal

Method used

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  • Double-layer filler bioretention device capable of efficient denitrification and dephosphorization
  • Double-layer filler bioretention device capable of efficient denitrification and dephosphorization

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Embodiment 2

[0030]A double-layer filler bioretention device for high-efficiency denitrification and phosphorus removal is a cylindrical structure composed of an aquifer, a planting soil layer, a filler layer, and a drainage layer from top to bottom. It is characterized in that the filler layer is Double-layer packing layer, the upper packing layer is filled with high water-permeable packing, and the lower packing layer is filled with low water-permeable packing.

[0031] Among them, the thickness of the aquifer is 250mm; the surface layer of the planting soil layer is a mixture of bark and leaves in the campus of Beijing Architecture University, the middle and lower layers are ordinary soil with corn stalks added, the thickness is 230mm, and the vegetation is fescue grass; the total thickness of the filler layer Set it to 1000mm, and set sampling ports at 250mm, 250mm, 300mm, 500mm, 700mm, and 1000mm from the surface of the filler in sequence, and add 200g / m2 between the planting soil laye...

Embodiment 3

[0033] A double-layer filler bioretention device for high-efficiency denitrification and phosphorus removal is a cylindrical structure composed of an aquifer, a planting soil layer, a filler layer, and a drainage layer from top to bottom. It is characterized in that the filler layer is Double-layer packing layer, the upper packing layer is filled with high water-permeable packing, and the lower packing layer is filled with low water-permeable packing.

[0034] Among them, the thickness of the aquifer is 250mm; the surface layer of the planting soil layer is a mixture of bark and leaves in the campus of Beijing Architecture University, the middle and lower layers are ordinary soil with corn stalks added, the thickness is 230mm, and the vegetation is fescue grass; the total thickness of the filler layer Set it to 8000mm, and set sampling ports at 250mm, 250mm, 300mm, 400mm, 550mm, and 800mm from the surface of the filler in sequence, and add 200g / m2 between the planting soil laye...

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Abstract

The invention discloses a double-layer filler bioretention device capable of efficient denitrification and dephosphorization, relating to a bioretention facility and solving the problems of low dephosphorization and denitrification efficiency and unstable removal effect in the existing facility. The double-layer filler bioretention device capable of efficient denitrification and dephosphorization is a cylindrical structure, and is composed of a water storage layer, a planting soil layer, a filler layer and a drainage layer from top to bottom, wherein the filler layer is a double-layer filler layer; the upper filler layer is filled with a high-water-permeability filler; and the lower filler layer is filled with a low-water-permeability filler. The double-layer filler bioretention device has the advantages of simple structure and obvious dephosphorization and denitrification effects, and is easy to implement and popularize.

Description

technical field [0001] The invention relates to a bioretention facility, in particular to a double-layer filler bioretention device for efficient nitrogen and phosphorus removal. Background technique [0002] In my country, following the effective control of point source pollution, non-point source pollution has become one of the main reasons for the deterioration of urban water quality. Urban surface runoff pollution is the second largest non-point pollution source after agricultural pollution, and phosphorus is considered to be The most important factor of water eutrophication. [0003] Bioretention facilities are an emerging low-impact development in-situ runoff stormwater control measure, which has good runoff pollution control effects, runoff volume reduction effects and peak flow control effects, and is economical and applicable, and can be widely used in urban greening in low spaces . However, the existing facilities for phosphorus treatment have problems such as low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/30C02F101/16
CPCC02F3/302C02F3/308C02F3/32C02F2101/16C02F2101/163Y02W10/10
Inventor 罗艳红陈富强王文亮
Owner ZHONGBEI UNIV
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