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3D-EO three-dimensional peroxidation electrochemical device and application thereof

A three-dimensional peroxidation, 3D-EO technology, applied in electrochemical water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve the problems of high treatment cost, limited oxidation capacity, poor mineralization capacity, etc. , to achieve the effect of high efficiency, fast processing speed and mild processing conditions

Inactive Publication Date: 2016-07-27
CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

o 3 Is a strong oxidizing agent, its oxidation ability is second only to F 2 And OH, can effectively deodorize, decolorize, sterilize, degrade organic matter, etc., basically no sludge is produced, and it is widely used in the field of water treatment; but it also has shortcomings: one is O 3 The oxidizing ability is limited and the oxidation of organic matter has strong selectivity. During the oxidation process, only the transformation of macromolecular organic matter in wastewater to small molecular organic matter is realized. Compared with H 2 o 2 The OH produced by the reaction is limited by environmental conditions such as concentration and pH, and the mineralization ability is poor, resulting in unsatisfactory COD and TOC of the effluent; the second is O 3 Inefficient utilization, resulting in high processing costs
The electrochemical oxidation method has mild conditions, easy operation and no secondary pollution, but limited by the water electrolysis point and electrode materials, the current efficiency is low and the energy consumption is high when degrading organic matter, and its oxidation treatment of organic wastewater is subject to certain development restrictions.

Method used

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  • 3D-EO three-dimensional peroxidation electrochemical device and application thereof
  • 3D-EO three-dimensional peroxidation electrochemical device and application thereof
  • 3D-EO three-dimensional peroxidation electrochemical device and application thereof

Examples

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Effect test

Embodiment 1

[0047] A kind of 3D-EO three-dimensional peroxidation electrochemical device of the present invention, such as figure 1 As shown, it includes a reactor 1 and an ozone generator 2, the reactor 1 is connected with the ozone generator 2, and a three-dimensional electrochemical oxidation device is provided in the reactor 1, and the three-dimensional electrochemical oxidation device includes ceramic particle electrodes 11 and six equally arranged The electrode plate 6. In this embodiment, the device further includes a power supply 4 arranged outside the reactor 1, and the electrode plates 6 are alternately connected to the positive pole and the negative pole of the power supply 4 as the positive pole and the negative pole.

[0048] In this embodiment, the reactor 1 is provided with a nano aeration head 5 for diffusing the mixed gas generated by the ozone generator 2 . The nano-aeration head 5 is located at the bottom of the reactor 1, between the air inlet 7 of the reactor 1 and t...

Embodiment 2

[0057] An application of the 3D-EO three-dimensional peroxidation electrochemical device of the present invention in the treatment of organic wastewater, using the 3D-EO three-dimensional peroxidation electrochemical device of embodiment 1, comprising the following steps:

[0058] Enter the biochemical effluent of coking wastewater with a COD of 300mg / L and a chromaticity of 500 times into the reactor 1 of the 3D-EO three-dimensional peroxidation electrochemical device, turn on the ozone generator 2, and pass the generated ozone mixture into the first stage respectively The reactor and the second-stage reactor, the volume ratio of the two feeds is 3:2, adjust the flow rate of the ozone mixed gas, so that it enters the reactor with the dosage of 80mg / L. Turn on the power, connect the external DC, and control the current density at 350A / m 2 , Stop the reaction after 20 minutes of treatment, that is, complete the deep degradation of wastewater. After passing through the three re...

Embodiment 3

[0061] An application of the 3D-EO three-dimensional peroxidation electrochemical device of the present invention in the treatment of organic wastewater uses the 3D-EO three-dimensional peroxidation electrochemical device in Example 1.

[0062] Method 1 (ozone oxidation): Put the biochemical effluent from a sewage treatment plant with a COD of 200 mg / L and a chroma of 200 times into the reactor 1 of the 3D-EO three-dimensional peroxidation electrochemical device, turn on the ozone generator 2, and generate The ozone mixed gas is passed into the first-stage and second-stage reactors respectively, and the feeding ratio of the two is 3: 2. The flow rate of the ozone mixed gas is adjusted so that it enters the reactor with a dosage of 80mg / L. The reaction is stopped after 15 minutes of treatment, that is, the deep degradation of the wastewater is completed. After passing through the three-stage series reactors, the treated water is discharged from the outlet at the lower end of the...

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Abstract

The invention discloses a 3D-EO three-dimensional peroxidation electrochemical device and application thereof. This device comprises a reactor and an ozone generator in connection with the reactor, a three-dimensional electrochemical oxidation device and a nano aerating head are disposed in the reactor, the three-dimensional electrochemical oxidation device comprises a ceramic particle electrode and more than two evenly arranged electrode plates, and the electrode plates are arranged as positive electrodes and negative electrodes alternately. The device is simple to operate, easy to automate, convenient to maintain, mild in condition, high in processing speed and efficiency, free of adding any chemicals, substantially free of sludge, free of secondary pollution, and widely applicable to the treatment of organic wastewater.

Description

technical field [0001] The invention belongs to the field of organic wastewater treatment, and in particular relates to a 3D-EO three-dimensional peroxidation electrochemical device and its application. Background technique [0002] With the rapid development of the economy and the acceleration of industrialization, the phenomenon of "water shortage" and "water pollution" has become more and more serious. We will intensify efforts in environmental protection, accelerate the development of the sewage treatment industry, and conduct advanced treatment of sewage to make the sewage reusable. It is the way to solve "water shortage" and "water pollution". Therefore, the country gradually promulgates increasingly strict pollutant discharge standards to adapt to economic, technological and social development, especially the COD index discharge limit is getting lower and lower. However, traditional back-end advanced treatment methods such as filtration, adsorption, membrane separatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/78C02F101/30
CPCC02F1/4672C02F2101/30C02F2301/08
Inventor 蒋晓云何劲松周丽丽胡文昊
Owner CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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