Wastewater treatment system and method for bioelectrocatalysis and photocatalysis contact oxidation coupling

A waste water treatment system, contact oxidation technology, applied in biological water/sewage treatment, electrochemical biological combination treatment, special compound water treatment, etc., can solve the problems of residual toxic products, difficult control of precise aeration, and insufficient oxygen supply To achieve the effect of improving processing speed and processing effect, improving extracellular power generation performance, reducing equipment investment and operating costs

Active Publication Date: 2017-08-04
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this system has the problems of slow processing speed, difficult control of precise aeration, and residual toxic products in the middle of azo decomposition. Moreover, due to the insufficient oxygen supply in contact with oxidative aerobic biofilms in a micro-aerobic environment, it is difficult for high-concentration COD Limited COD removal from nitrogen dye wastewater

Method used

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  • Wastewater treatment system and method for bioelectrocatalysis and photocatalysis contact oxidation coupling
  • Wastewater treatment system and method for bioelectrocatalysis and photocatalysis contact oxidation coupling
  • Wastewater treatment system and method for bioelectrocatalysis and photocatalysis contact oxidation coupling

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Experimental program
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Effect test

Embodiment 1

[0064] Wastewater treatment systems coupled with bioelectrocatalysis and photocatalytic contact oxidation, such as figure 1 As shown, it includes: the lower end cover 1, the first pipe body 2, the second pipe body 3, the third pipe body 4 and the upper end cover 5 connected sequentially from bottom to top; The inlet hole 201 is used as a waste water inlet hole, and the third pipe wall side of the third pipe body 4 is provided with a through hole 401 as a liquid outlet, and the waste water flows from the first pipe body 2 to the third pipe body 3; in the first pipe body 2 A biological cathode 202 is provided, which is connected to the external circuit 6; a biological anode 301 is arranged in the second tube body 3, and the biological anode 301 is connected to the external circuit 6; microorganisms are attached to the surfaces of the biological cathode 202 and the biological anode 301, and the microorganisms It can break the azo double bond of the chromophoric group in the azo d...

Embodiment 2

[0082] The bioelectrocatalysis and photocatalysis contact oxidation coupled wastewater treatment system of this embodiment is based on Example 1, such as image 3As shown, a fourth pipe body 9 is provided between the third pipe body 4 and the upper end cover 5, so that the water outlet of the third pipe body 4 is an opening communicated with the fourth pipe body, so that the waste water can be discharged in the third pipe body. After fully contacting and reacting in the pipe body 4, it flows to the fourth pipe body 9, and flows out from the waste water outflow hole 901 provided on the pipe wall of the fourth pipe body. The through hole 401 can be used as a third sampling hole for testing the decolorization effect of the treated wastewater. In order to detect the activity of the bacteria, there is a second reference electrode 902 on the wall of the fourth tube body 9 .

[0083] Taking the treatment of dye Direct Blue 71 wastewater as an example, the direct blue 71 is decoloriz...

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Abstract

The invention relates to the technical field of wastewater treatment, and in particular discloses a wastewater treatment system for bioelectrocatalysis and photocatalysis contact oxidation coupling. The wastewater treatment system comprises a first tube body, a second tube body and a third tube body which are connected in sequence, wherein a liquid inlet hole is formed in the wall of the first tube body; a liquid outlet hole is formed in the third tube body; a biological cathode is arranged inside the first tube body; the biological cathode is connected with an external circuit; a biological anode is arranged inside the second tube body; the biological anode is connected with the external circuit; microorganisms are adhered to the surfaces of the biological anode and the biological cathode; the third tube body is internally provided with mixed packing and an ultraviolet lamp; the center of the mixed parking is a cavity; and the ultraviolet lamp is arranged inside the cavity. Due to reasonable arrangement of the structure and the spatial utilization of a biological membrane inside the mixed parking, dissolved oxygen can be utilized in the wastewater treatment system in a gradient manner, so that the problem that the dissolved oxygen cannot be precisely controlled when a micro oxygen technique is used is solved, and in addition, removal of azo dyes, intermediates and residual COD (Chemical Oxygen Demand) in wastewater by a biological membrane at a contact oxidation part is improved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system and method coupled with bioelectrocatalysis and photocatalysis contact oxidation. Background technique [0002] my country's printing and dyeing industry is developed, and a large amount of printing and dyeing wastewater is produced every year. As one of the typical pollutants, azo dyes, due to their high chroma, affect the aesthetics of the environment and affect the photosynthesis of aquatic organisms, resulting in the destruction of the ecological environment of water bodies. [0003] At present, biological treatment, as the main technology of wastewater treatment plant, can be used to mineralize azo dyes. The process is mainly an anaerobic bioreactor in the decolorization stage and an aerobic bioreactor for secondary treatment in series. The tandem process of anaerobic and aerobic can achieve a good decolorization effect, but there a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/30C02F1/32C02F101/30C02F101/38
CPCC02F1/32C02F3/005C02F3/301C02F2101/308C02F2101/38C02F2305/10
Inventor 王有昭吴宗庭潘元朱彤
Owner NORTHEASTERN UNIV
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