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Ultrasonic, H2O2 and microchannel advanced oxidation method and device

A technology of H2O2 and microchannel, applied in chemical instruments and methods, separation methods, oxidized water/sewage treatment, etc., can solve the problems of large equipment investment, limited technology application, high treatment cost, etc., and achieve the effect of safe treatment and utilization

Pending Publication Date: 2021-06-22
四川全息生态环境技术产业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industrial wastewater with high organic matter content is usually difficult to treat by biological methods due to the large amount of refractory organic matter such as aromatic hydrocarbons and heterocycles contained in it
At present, the existing treatment methods for high-organic waste water generally have problems such as large equipment investment and high treatment costs, which limit the application of corresponding technologies

Method used

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  • Ultrasonic, H2O2 and microchannel advanced oxidation method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The wastewater to be treated in this embodiment is chloronitrobenzene wastewater with an initial CODCr value of 11500 mg / L.

[0060] The wastewater to be treated is treated by the aforementioned device, and the operation is as follows.

[0061] 1) The first conveying device sends the waste water to be treated in the organic matter temporary storage device into the water inlet tank of the microchannel reactor, and the second conveying device sends the hydrogen peroxide in the hydrogen peroxide temporary storage device into the water inlet tank of the microchannel reactor, through The flow rate of the first conveying device and the second conveying device is controlled, so that the hydrogen peroxide and the waste water to be treated entering the microchannel reactor are mixed according to a set ratio, and an oxidized intermediate liquid is obtained. In the oxidation intermediate liquid, the amount of hydrogen peroxide added is 15ml / L (wastewater) of 50%H 2 o 2 .

[006...

Embodiment 2

[0069] The wastewater to be treated in this embodiment is molasses alcohol wastewater with a COD value of 36000 mg / l.

[0070] Among them, the concentration of hydrogen peroxide in the oxidation intermediate liquid is 50%H of 45ml / L (waste water). 2 o 2 ; In step 2), the inner diameter of the microchannel is 200 microns, the flow rate of the liquid in the microchannel is 20ml / min, and the power density of the ultrasonic generator is 0.5w / cm 2 , the applied ultrasonic frequency is 30kHz. Other operations are the same as in Example 1.

[0071] The ultrasonic intermediate solution was tested, and the test results were as follows: CODcr was 423mg / L.

Embodiment 3

[0073] The wastewater to be treated in this embodiment is printing and dyeing wastewater, the chroma is 4096 times, and the COD is 10240mg / L.

[0074] Among them, the concentration of hydrogen peroxide in the oxidation intermediate liquid is 50%H of 30ml / L (waste water). 2 o 2 ; In step 2), the inner diameter of the microchannel is 150 microns, the flow rate of the liquid in the microchannel is 25ml / min, and the power density of the ultrasonic generator is 0.5w / cm 2 , the applied ultrasonic frequency is 40kHz. Other operations are the same as in Example 1.

[0075] The ultrasonic intermediate solution was tested, and the test results were as follows: the chroma was 48 times, and the COD was 120mg / L.

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Abstract

The invention discloses an ultrasonic, H2O2 and microchannel advanced oxidation method and device, and belongs to the field of pollutant treatment. The ultrasonic, H2O2 and microchannel advanced oxidation method comprises the steps of 1, adding hydrogen peroxide into a wastewater solution to be treated to obtain an oxidized intermediate solution, or dissolving the waste gas to be treated with water, and then adding hydrogen peroxide into the solution for dissolving the waste gas to obtain an oxidized intermediate solution; (2) feeding the oxidized intermediate solution into a microchannel of a microchannel reactor, enabling the oxidized intermediate solution to react in the microchannel, carrying out ultrasonic treatment on the oxidized intermediate solution in the microchannel through an ultrasonic generator while the oxidized intermediate solution is conveyed in the microchannel, and after ultrasonic treatment of the oxidized intermediate solution in the microchannel is completed, obtaining an ultrasonic intermediate solution; and (3) carrying out sewage biochemical treatment on the ultrasonic intermediate solution. Rapid decomposition of hydrogen peroxide is achieved through ultrasonic waves, the concentration of free radicals in the solution is effectively improved, and then the treatment efficiency of organic matter wastewater is improved.

Description

technical field [0001] The invention relates to the field of pollutant treatment, especially the field of pollutant treatment containing organic matter, specifically an ultrasonic, H 2 o 2 And microchannel advanced oxidation method and device. This application uses ultrasound to promote the efficiency of hydrogen peroxide to generate free radicals and improve the treatment effect. Background technique [0002] High organic matter wastewater is a common type of difficult-to-treat wastewater. It generally refers to wastewater with high organic content and complex composition. This type of wastewater usually contains a large amount of refractory organic compounds such as aromatic hydrocarbons and heterocycles. Industrial wastewater with high organic content is usually difficult to treat by biological methods due to the large amount of refractory organic compounds such as aromatic hydrocarbons and heterocycles contained in it. At present, the existing treatment methods for hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01D53/14B01D53/18C02F101/36C02F103/30C02F103/32C02F103/34C02F101/34
CPCC02F9/00B01D53/1487B01D53/18C02F1/36C02F1/78C02F3/00C02F3/30C02F3/1268C02F2101/36C02F2103/325C02F2103/30C02F2103/34C02F2101/345Y02E50/30
Inventor 王俊辉徐庆元黄爱明宋宝增
Owner 四川全息生态环境技术产业有限公司
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