Biological carbon modular composite vertical-flow artificial wetland system

A constructed wetland system and biochar technology, applied in sustainable biological treatment, biological water/sewage treatment, granular microbial carrier treatment, etc., to achieve the effects of preventing floating, promoting plant growth, and facilitating replacement

Active Publication Date: 2015-07-08
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies of the above-mentioned vertical flow constructed wetland technology, the present invention provides a biochar modular composite vertical flow constructed wetland system that is not easy to block and has good removal effect of pollutants such as nitrogen and phosphorus.

Method used

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  • Biological carbon modular composite vertical-flow artificial wetland system

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Experimental program
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Embodiment 1

[0028] Such as figure 1 As shown, the bottom layer of the front end of the wetland bed 1 is a gravel layer 3, the gravel particle size is 10mm-20mm, and the thickness is 200mm. 600mm, on the biochar layer 4 is the filter material layer 5, the filter material is made of non-woven needle-punched felt, the uppermost layer is covered with a gravel layer 3, the gravel particle size is 10mm-20mm, and the thickness is 30mm; the middle and lower layer of the wetland bed body 1 is The gravel and biochar mixed filler layer 9, the gravel particle size is 10mm-30mm, the thickness is 450mm, the upper layer is the quartz sand and biochar mixed filler layer 8, the quartz sand particle size is 2mm-4mm, the thickness is 200mm, biochar is added The volume ratio is 10% to 30%. The quartz sand and biochar mixed filler layer 8 is planted with wetland plants 7. In this area, a water retaining plate 12 is set with a height of 250mm to 350mm. The distance between the bottom of the water retaining pla...

Embodiment 2

[0035] A biochar modular composite vertical flow artificial wetland system, including a wetland bed, a water inlet tank, a gravel layer, a modular biochar layer, a mixed packing layer, a filter layer, wetland plants, a return device and a water distribution pipe, and the water is fed in sequence After anoxic gravel layer and biochar layer, aerobic mixed packing layer, and anoxic biochar layer, a reflux device is installed inside; the biochar layer is modular, and the biochar layer is a filter material layer. Non-woven needle-punched felt is used, and the filter material layer is covered with a gravel layer; the water behind the biochar layer at the front enters the mixed sand layer and mixed gravel layer through the high-level distribution pipe in the form of falling flow, and the water in this area is downstream; Part of the sewage flows back to the water inlet, and the other part flows out through the back-end biochar layer; anti-seepage materials are added to the side wall and...

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Abstract

The invention relates to a biological carbon modular composite vertical-flow artificial wetland system which comprises a wetland bed body, a water inlet tank, a gravel layer, a modular biological carbon layer, a mixed filler layer, a filtering medium layer, wetland plants, a reflux unit and a water distributor. When the wetland operates, influent water passes through the anoxic gravel layer and biological carbon layer, the aerobic mixed filler layer, and the anoxic biological carbon layer and filtering medium layer. The reflux unit is arranged inside, and pollutants in sewage are removed under the filtration-adsorption-precipitation action, microbial conversion action and plant absorption action. The biological carbon modular composite vertical-flow artificial wetland system has the advantages of blockage prevention, high hydraulic load, favorable nitrogen/phosphorus removal effect, stable operation and the like.

Description

technical field [0001] The invention belongs to the field of ecological water treatment and relates to a biochar modular composite vertical flow artificial wetland system. Background technique [0002] Due to the limitations of centralized sewage treatment in rural areas and small and medium-sized cities and towns, the sewage in these areas is usually purified by a decentralized treatment system. Among them, the artificial wetland has the advantages of simple structure, small investment, convenient operation and maintenance, and low cost, and is very practical. powerful. [0003] Sewage treatment in the constructed wetland system is completed under the joint action of plants, microorganisms and fillers, and sewage treatment through constructed wetlands has been put into more and more applications. With its unique structure and water flow mode, the vertical subsurface flow constructed wetland can not only reduce the seasonal impact, slow down the breeding of mosquitoes and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F3/301C02F3/32C02F2003/003Y02W10/10
Inventor 张建刘华清安沫霖胡振张成禄
Owner SHANDONG UNIV
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