Equipment and method for treating organic waste water through electrocatalysis of cathode in combination with anode

An organic wastewater and electrocatalysis technology, applied in electrochemical water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of complex structure, limited practical application of wastewater treatment, weak electrocatalytic oxidation, etc., to achieve treatment efficiency High, overcome the decline of treatment effect, the effect of simple reactor

Inactive Publication Date: 2005-03-30
ZHEJIANG UNIV
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Problems solved by technology

Shen Zhemin et al.’s patent (application number 02136606.3) uses a membrane gas diffusion electrode as the cathode, has noticed the above problems and developed a bipolar oxidation electrochemical wastewater treatment method to improve the treatment effect, but because the anode adopts a shape-stable anode, the electrocatalytic The oxidation is not strong, and the cathode and anode are separated by a salt bridge, so the structure is complex, which limits the practical application of wastewater treatment

Method used

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  • Equipment and method for treating organic waste water through electrocatalysis of cathode in combination with anode

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Embodiment

[0032] The experiment compared the difference of the degradation rate of phenol under three ways of ferrous ion catalyzed cathodic and cathodic co-degradation (FeACE), cathodic co-degradation (ACE) and anodic oxidation reaction (AE).

[0033] (1) In the anodic oxidation (AE) process, the treatment condition is that the concentration of phenol in the wastewater is 100mg L -1 , pH3, current 0.25A, no aeration, no ferrous ion dosing;

[0034] (2) In the ACE process, the treatment condition is that the concentration of phenol in the wastewater is 100 mg L -1 , pH3, current 0.25A, aeration rate (air) of 6.7mL s -1 , no ferrous ion dosing;

[0035] (3) In the ferrous ion-catalyzed cathodic and cathodic co-degradation (FeACE) process, the treatment condition is that the concentration of phenol in the wastewater is 10 mg L -1 , pH3, current 0.25A, aeration rate (air) of 6.7mL s -1 , The dosage of ferrous ion is 0.50mM.

[0036] The results showed that the treatment effect: FeACE>...

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Abstract

In the invention, positive pole is fit at center of reaction casing, negative pole is fit surround inwall of reaction casing, a cyclic microporous aeration unit is fit near negative pole on bottom of the reaction casing, waste water charging pipe intercommunicated with waste water storage tank is fit on bottom part of the reaction casing, water discharging pipe is fit on the super part. In waste water treatment, 0.1-5mM iron sulfate and 1-10g / L sodium sulfate electrolyte are added in waste water, adjusting pH value of waste water is 2.0-5.0, the waste water is pumped from storage tank to electrochemical reactor, at same time, turn on electrochemical DC power and sending gas in, controlling flow of waste water is 10-50ml / s, electric current is 0.1-2A, aeration speed is 1-30ml / s-1.

Description

technical field [0001] The invention relates to a device and a method for electrocatalytic treatment of organic wastewater. Background technique [0002] Organic wastewater containing refractory biodegradable pollutants, due to its poor biodegradability, is difficult to be effective by conventional treatment methods and brings great pollution to the environment. It has become a technical problem that has been concerned and to be solved in the field of environmental protection water treatment for many years. [0003] In recent years, electrocatalytic technology has attracted extensive attention of researchers due to its advantages of high processing efficiency, simple operation, easy automation, and environmental friendliness (Comninellis C., Nerini A. J. Appl. Electrochem., 1995, 25: 23). The feature of this technology is that it can generate extremely strong oxidizing hydroxyl radicals on the spot through the electrode catalytic reaction, effectively degrade refractory orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/72
Inventor 周明华戴启洲吴祖成汪大翚
Owner ZHEJIANG UNIV
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