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Visible light catalysis coupling bioelectrochemical wetland system and application thereof

A bioelectrochemical and visible light technology, applied in the direction of electrochemical biocombination treatment, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor nitrogen and phosphorus pollutants, achieve enhanced removal ability, and improve photocatalytic performance , enhance the biochemical effect

Active Publication Date: 2020-01-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem of the poor treatment effect of nitrogen and phosphorus pollutants in existing artificial wetlands, and provides a visible light catalytic coupling bioelectrochemical wetland system and its application

Method used

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  • Visible light catalysis coupling bioelectrochemical wetland system and application thereof
  • Visible light catalysis coupling bioelectrochemical wetland system and application thereof
  • Visible light catalysis coupling bioelectrochemical wetland system and application thereof

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specific Embodiment approach 1

[0026]Embodiment 1: In this embodiment, a visible light catalytic coupling bioelectrochemical wetland system includes a water storage area, a multi-stage baffled wetland bed and an electrochemical system; the water storage area includes a water pump 12; the multi-stage baffled wetland bed automatically From bottom to top, there are first gravel layer 2, conductive material layer 3, second gravel layer 4 and photocatalytic material coating 5, and are divided into four-level baffle areas by baffle plates, and the first-level baffle areas are sequentially arranged according to the direction of water flow. flow area, the second-level baffle area, the third-level baffle area and the fourth-level baffle area, an overflow duct 7 is provided between adjacent baffle areas, and an inlet duct 7 is provided above the first-level baffle area. The water inlet 1 and the water inlet 1 are communicated with the water pump 12 through pipelines, and the water outlet 11 is arranged above the fourt...

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the depth of the multi-stage baffle wetland bed is 1.0m, the length is 1.2m, the width is 0.6m, and the length of each stage baffle area is 0.3m. m. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the thickness of the first gravel layer 2 is 10 cm, the material is pebbles, and the particle size is 10-20 mm. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a visible light catalysis coupling bioelectrochemical wetland system and application thereof, and relates to the field of sewage treatment. The visible light catalysis couplingbioelectrochemical wetland system is invented to solve the technical problems of refractory organic matter low treatment efficiency and nitrogen and phosphorus pollutant poor treatment using an existing constructed wetland. The system comprises a water storage area, a multi-stage baffling wetland bed and an electrochemical system; the water storage area comprises a water pump; the multi-stage baffling wetland bed sequentially comprises a first gravel layer, a conductive material layer, a second gravel layer and a photocatalytic material coating from bottom to top, and is divided into four stages of baffling areas through baffling plates. The system is applied to the field of sewage treatment. According to the system, a constructed wetland is coupled with electrochemistry and photocatalysis, so that the removal capacity of the wetland on pollutants such as refractory organic matters, nitrogen and phosphorus is enhanced, the pollutants in the wastewater are efficiently and stably removed by combining the enhancement effect of bioelectrochemistry on the constructed wetland on the basis of fully utilizing sunlight, and the influence of the pollutants on the water environment is reduced. The system disclosed by the invention is used for removing pollutants in the constructed wetland.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a visible light catalytic coupling bioelectrochemical wetland system and its application. Background technique [0002] The total amount of waste water in China is more than 73.53 billion tons every year. These waste water are treated by sewage treatment plants to meet the highest standards of urban sewage treatment in my country. Compared with the quality standards of surface water in my country, the effluent is still inferior to Class V water, which is still the cause of eutrophication in water bodies. One of the main reasons. Especially in the tail water of industrial park sewage treatment plants, the content of refractory organic matter is high, the B / C is low, and the biodegradability is poor. A large number of refractory organic substances such as antibiotics and other residues affect the further degradation of microorganisms and pose potential risks to the environment. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/32B01J23/847C02F1/30C02F101/10C02F101/16C02F101/30
CPCC02F3/005C02F3/32B01J23/8472C02F1/30C02F2101/105C02F2101/16C02F2101/30C02F2101/40C02F2101/163B01J35/39
Inventor 丁杰刘先树任南琪钟乐吴高峰
Owner HARBIN INST OF TECH
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