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Electrochemical oxidation processing method for wastewater containing anthraquinone dye

An oxidative treatment and anthraquinone dye technology, applied in chemical instruments and methods, textile industry wastewater treatment, water/sewage treatment, etc., to achieve the effects of less equipment investment, high COD reduction rate, and good oxidative degradation ability

Inactive Publication Date: 2010-10-20
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Electrochemical oxidation processing method for wastewater containing anthraquinone dye
  • Electrochemical oxidation processing method for wastewater containing anthraquinone dye
  • Electrochemical oxidation processing method for wastewater containing anthraquinone dye

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Embodiment Construction

[0018] 1. Preparation of titanium-based tin-antimony metal oxide electrode

[0019] The electrode described in the present invention is prepared by a thermal decomposition method. The process is as follows: firstly, the titanium substrate (titanium plate or titanium mesh or titanium wire or titanium particles can be used) is polished to remove surface oxides, and then placed in a Boil the titanium substrate in 10% NaOH solution for 20-60 minutes to remove the oil stain on the surface, rinse it with distilled water after taking it out, and then etch the titanium substrate with an oxalic acid solution with a mass fraction of 5%-15% to enhance coating. The binding force between the layer and the substrate; at 20-80°C, first dissolve a certain amount of citric acid in ethylene glycol, the molar ratio of citric acid to ethylene glycol is 1:1-10, and then add a certain amount of citric acid SnCl 4 ·5H 2 O and SbCl 3 , citric acid and SnCl 4 ·5H 2 O and SbCl 3 The molar ratio o...

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Abstract

The invention provides a method for electrochemical oxidation treatment of waste water containing anthraquinone dye, and relates to the technical field of water treatment. In the method, a titanium-based metal oxide electrode is taken as an anode, copper or stainless steel is taken as a cathode, a flat plate or three-dimensional fixed bed is taken as an electrochemical reactor, under conditions of the current density of between 10 and 1,500A / m<2>, the content of supporting electrolyte, namely Na2SO4 of between 1 and 20g / L and the temperature of the waste water of between 5 and 95 DEG C, the electrochemical oxidation treatment is performed. The method has the advantages of the degradation of the anthraquinone dye in a short time, quick reaction rate, good decolorization effect, high decrease rate of COD, simple technological flow, little equipment investment, easy operational control and easy industrialized application.

Description

technical field [0001] The invention relates to a treatment method for anthraquinone dye wastewater that is difficult to biodegrade in electrochemical and environmental chemistry technology, and belongs to the technical field of water treatment. Background technique [0002] With the rapid development of the textile industry, the variety and quantity of dyes are increasing day by day, dye production and printing and dyeing wastewater has become one of the key pollution sources of the water environment. According to statistics, about 60,000 tons of dyes are discharged into the environment in the form of waste every year in the world, which has a huge impact on aquatic ecosystems and their boundary environments. Wastewater loses 2% of the product. In the printing and dyeing process, the loss is even greater, about 10% of the dye used. Due to the characteristics of large water volume, wide distribution, large water quality changes, high content of organic poisons, complex com...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F103/30C02F101/34
Inventor 王雅琼牛娜许文林张小兴陈小芹
Owner YANGZHOU UNIV