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Treatment technology of wastewater generated in preparation of hydrogen peroxide from anthraquinone

A waste water treatment, hydrogen peroxide technology, applied in degassed water/sewage treatment, flocculation/sedimentation water/sewage treatment, peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, etc., can solve Unable to meet the requirements of drainage indicators and other issues, to achieve a stable effect

Inactive Publication Date: 2014-08-27
ARKEMA HYDROGEN PEROXIDE CO LTD SHANGHAI
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  • Description
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Problems solved by technology

However, in the process of preparing hydrogen peroxide by the anthraquinone method, the wastewater produced mainly includes working solutions containing a large amount of organic solvents and domestic wastewater. The wastewater treatment system in District 700 is the main process for treating wastewater and reducing the COD of wastewater. Wastewater from the factory area The COD reaches 5000-6000ppm. After the traditional Fenton process, the main indicator of the water outlet COD drops to about 250ppm, and the suspended solids SS is about 250mg / l, but it still cannot meet the drainage requirements.

Method used

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Embodiment

[0012] On the basis of the traditional Fenton process, the present invention has carried out further technical improvement, and is used for the wastewater treatment of anthraquinone to prepare hydrogen peroxide, and adds quaternary ammonium salt flocculant and organic silicon defoamer to the wastewater obtained by anthraquinone to prepare hydrogen peroxide , After stirring for 12-24 hours, the waste water treatment is completed, and the waste water after the treatment is completed can be discharged. For the waste water treated by the present invention, the COD at the discharge end is reduced from 250 ppm to below 20-30 ppm, and the SS is reduced to about 20-30 mg / l, which meets the waste water discharge index, and the effect is very stable, and there is no adverse effect on the whole waste water treatment system influences.

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Abstract

The invention relates to a treatment technology of wastewater generated in the preparation of hydrogen peroxide from anthraquinone. The technology comprises the following steps: adding a flocculating agent and an antifoaming agent to wastewater obtained in the preparation of hydrogen peroxide from anthraquinone, and stirring for 12-24h to complete the wastewater treatment. Compared with the prior art, the technology makes the COD of water discharged from a water discharge end decrease from original 250ppm to below 20-30ppm and SS decrease to about 20-30mg / l after long time wastewater treatment, meets wastewater emission indexes, has a very stable effect, and has no untoward effects on the whole wastewater treatment system.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a wastewater treatment process for preparing hydrogen peroxide from anthraquinone. Background technique [0002] The production of hydrogen peroxide by anthraquinone method is currently one of the most mature methods for producing hydrogen peroxide in the world. The hydrogenation catalysts used in the production of hydrogen peroxide by anthraquinone method are basically palladium-based catalysts, including fixed-bed catalysts and suspension-bed catalysts. However, in the process of preparing hydrogen peroxide by the anthraquinone method, the wastewater produced mainly includes working solutions containing a large amount of organic solvents and domestic wastewater. The wastewater treatment system in District 700 is the main process for treating wastewater and reducing the COD of wastewater. Wastewater from the factory area The COD reaches 5000-6000ppm. After being treated by the t...

Claims

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Application Information

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IPC IPC(8): C02F1/54C02F1/20C01B15/023
Inventor 蒋兴江夏剑峰
Owner ARKEMA HYDROGEN PEROXIDE CO LTD SHANGHAI
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