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Method and equipment for processing wastewater of internal electrolysis based on supersound function

A technology for wastewater treatment and internal electrolysis, which is applied in water/sewage treatment, water/sludge/sewage treatment, mechanical oscillation water/sewage treatment, etc. It can solve problems such as clogging of reaction columns, and prevent rust, caking, and operating costs. Low, safe and convenient operation effect

Inactive Publication Date: 2007-05-09
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention: to provide an ultrasonic synergistic internal electrolysis method and reaction device for wastewater treatment, which can effectively treat refractory organic pollutants in wastewater, and can overcome problems such as reaction column blockage and iron filings agglomeration

Method used

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  • Method and equipment for processing wastewater of internal electrolysis based on supersound function

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Effect test

Embodiment 1

[0017] Acid Orange II azo dye simulated wastewater, initial concentration 500mg / L, pH 4.03, the test device is a glass tube reactor with a diameter of 25mm. The flow rate of the treated water is 289ml / h, the ultrasonic power is 220W, the ultrasonic is 5 seconds, and the interval is 15 seconds. During the treatment time of 150 minutes, the average COD removal rate is 63.40%, the highest is 69.23%, and the average color removal rate is 77.19%. Up to 80.58%.

Embodiment 2

[0019] Acid orange II azo dye simulated wastewater, initial concentration 250mg / L, pH 3.97, treated water flow rate 291ml / h, ultrasonic power 80W, continuous ultrasonic, within 150min treatment time, the average COD removal rate is 54.49%, The highest is 72.46%, the average chroma removal rate is 79.40%, and the highest is 81.51%.

Embodiment 3

[0021] For a printing and dyeing wastewater, the initial COD=2000mg / L, pH4.03, the flow rate of the treated water is 266ml / h, the ultrasonic power is 220W, the ultrasonic is 5 seconds, the interval is 15 seconds, and the average COD removal rate is 56.26% in the treatment time of 150min , up to 60.33%, the average chroma removal rate is 67.954%, up to 74.23%.

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Abstract

This invention relates to method and apparatus for treating interior electrolytic wastewater based on ultrasonication. The method utilizes low-intensity ultrasonic wave to intensify the electrolytic process and improve the treatment effect. Microfluidization effect of ultrasonication, shock wave damage, and H2O2 produced by cavitation during the ultrasonication process can activate the surface of iron chips, thus can effectively prevent the rust and agglomeration of iron chips, clean the surface of iron chips, and accelerate the reaction speed of interior electrolysis. The reaction apparatus is uniformly filled with iron chips and activated carbon particles. Besides, ultrasonication is used as an auxiliary. Ultrasonic cleaning can effectively prevent the blockage of iron and carbon bed. The method and apparatus are simple and rational, and have low cost. The method and apparatus can be widely used for treating organic pollutants in wastewater that are difficult to degrade, improving the ability of wastewater for biochemical treatment, and having high removing rates of color degree and COD of pigment wastewater.

Description

technical field [0001] The invention relates to a method and a device for synergistically removing organic pollutants in water by ultrasonic action and internal electrolysis, which can be used for treating industrial waste water and domestic sewage, especially for the treatment of colored and refractory biodegradable organic pollutants. technical background [0002] For the treatment of colored and refractory industrial wastewater, ordinary biological treatment often fails to achieve the expected results. For example, the dye itself in printing and dyeing wastewater has strong biological toxicity, which will inhibit microbial activity and affect the decolorization effect. Now usually adopt the measure of increasing pretreatment before biological treatment. The pretreatment of wastewater can greatly improve the quality of wastewater, which is conducive to the next step of treatment, and finally achieves the purpose of removing pollutants. For difficult-to-treat industrial wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/36
Inventor 曲久辉刘海宁李国亭刘会娟雷鹏举
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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