Method and device for multicomponent oxide pretreatment of organic electroplating waste water
A pretreatment device and technology for electroplating wastewater, applied in metallurgical wastewater treatment, water/sewage multi-stage treatment, oxidized water/sewage treatment, etc. Bacteria cannot be cultivated, etc., to achieve the effect of improving biochemical performance, stable operation and low processing cost
Inactive Publication Date: 2009-12-02
CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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[0006] The present invention aims to provide a technical solution of a multi-component oxidation pretreatment method and device for organic electroplating wastewater combined with iron-carbon micro-electrolysis and Fenton oxidation, to solve the problem of poor pretreatment effect of conventional coagulation sedimentation or air flotation, inability to cultivate biochemical bacteria, and water effluent Problems such as CODcr seriously exceeding the standard
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[0020] Below in conjunction with accompanying drawing, the present invention will be further described:
[0021]Organic electroplating wastewater multi-oxidation pretreatment method, organic electroplating wastewater undergoes acidity adjustment, iron-carbon micro-electrolysis reaction, Fenton oxidation reaction in sequence, and then effluent, creating good water inflow conditions for subsequent coagulation sedimentation or air flotation and biochemical treatment. The acidity adjustment controls the pH value of the organic electroplating wastewater to 2.0-5.0 to ensure the acidity conditions required for the iron-carbon micro-electrolysis reaction. Generally, the influent pH value of the organic electroplating wastewater is between 2.0-5.0, and no additional acid is needed Or alkali, using waste to treat waste can save a lot of pharmaceutical costs. The iron-carbon micro-electrolysis reaction is that the organic electroplating wastewater undergoes a micro-electrolysis reaction...
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Abstract
The invention relates to a method and a device for multicomponent oxide pretreatment of organic electroplating waste water, which belong to the technical filed of electroplating waste water treatment in the environment engineering. The pretreatment method is characterized in that organic electroplating waste water is sequentially subjected to acidity adjustment, ferrum-carbon micro-electrolysis reaction and Fenton oxidation reaction. The corresponding device comprises a pH adjusting tank, a ferrum-carbon micro-electrolysis bath and a Fenton oxidation pond; an acid-alkali feeding device and a pH controller which are in link control are arranged above the pH adjusting tank; the middle low part of the ferrum-carbon micro-electrolysis bath is paved with a ferrum-carbon filler layer, while the bottom is provided with a micro-electrolysis bath perforation water distribution pipe; a hydrogen peroxide feeding device is arranged above the ferrum-carbon micro-electrolysis bath; the bottom of the Fenton oxidation pond is provided with a Fenton oxidation pond perforation water distribution pipe; and the middle lower part of the Fenton oxidation pond is provided with a granular active carbon catalytic carrier layer. The method and the device obviously improve the capability of biochemistry, simultaneously perform oxidation reaction to remove mostly organic pollutants and create favorable water inlet condition for subsequent coagulating sedimentation, air flotation and biochemical treatment.
Description
technical field [0001] The invention belongs to the technical field of electroplating wastewater treatment in environmental engineering, and in particular relates to a multi-component oxidation pretreatment method and device for organic electroplating wastewater. Background technique [0002] As an important basic industry in my country, the electroplating industry is widely used in the production of industrial and civilian products such as electronics, light industry, machinery, and household appliances. With the rapid development of economic construction, the service scope of the electroplating industry is also expanding, and electroplating has become an indispensable process for various industrial products. However, the rapid development of the electroplating industry and its lagging pollution control have brought great challenges to this thriving industry. The electroplating industry is famous for its high pollution and has become one of the three major polluting indust...
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IPC IPC(8): C02F9/06C02F1/66C02F1/72C02F103/16
Inventor 秦树林郦朝晖高亮周如禄崔兵
Owner CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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