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System for treating chromium-containing wastewater by using electrolytic method

A technology of electrolysis and waste water, applied in water/sewage treatment, neutralized water/sewage treatment, multi-stage water/sewage treatment, etc., can solve pollution and other problems, achieve easy maintenance, good chromium removal effect, and simple structure Effect

Inactive Publication Date: 2013-01-30
TIANJIN SUNLONG XINGYE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] A lot of industrial wastewater, especially electroplating wastewater, contains hexavalent chromium. If it is discharged directly, it will cause pollution. Now there is an urgent need for a good method for treating chromium-containing electroplating wastewater, turning waste into treasure and reducing pollution.

Method used

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  • System for treating chromium-containing wastewater by using electrolytic method

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0009] Such as figure 1 As shown, the present invention includes a waste water regulating tank, a mean regulating pond, an electrolyzer, a sedimentation pond and a sedimentation dryer, and the waste water in the regulating pond enters the said mean regulating pond connected with a water distribution tank through a pipeline, and by controlling the The amount of water transported by the water distribution tank can adjust the amount of sewage, sewage concentration and pH value of the mean value adjustment pool. It is connected with the sedimentation tank, and the electrolysis product is discharged into the sedimentation tank, and the sedimentation tank is connected with the sedimentation dryer, and the supernatant is directly discharged, and the sediment is dried and then discharged out of the system.

[0010] During use, the direct current makes...

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Abstract

The invention provides a system for treating chromium-containing wastewater by using an electrolytic method. The system comprises a wastewater regulating tank, an average regulating tank, an electrolytic tank, a sedimentation tank and a sedimentation dryer. Wastewater in the wastewater regulating tank enters the average regulating tank connected with a distributing tank through a pipeline, the average regulating tank is communicated with the electrolytic tank connected with a power source through a pipeline, the electrolytic tank is connected with the sedimentation tank through a pipeline, and the sedimentation tank is communicated with the sedimentation dryer. The system has the advantages that as the technical scheme is used, an iron anode produces ferrous ions under the action of direct currents, the ferrous ions generate trivalent chromium hydroxide precipitation under certain conditions, and the precipitation is separated and the chromium is removed; and the structure is simple, the maintenance is convenient, the chromium removing effect is good, the production efficiency is high and the like.

Description

technical field [0001] The invention relates to a system for treating chromium-containing wastewater by electrolysis. Background technique [0002] A lot of industrial wastewater, especially electroplating wastewater, contains hexavalent chromium. If it is discharged directly, it will cause pollution. Now there is an urgent need for a good method to treat chromium-containing electroplating wastewater to turn waste into treasure and reduce pollution. Contents of the invention [0003] The object of the present invention is to provide an energy-saving and environment-friendly electrolysis system for treating chromium-containing wastewater. [0004] The technical solution of the present invention is: a system for treating chromium-containing wastewater by electrolysis, including a wastewater regulating tank, an average value regulating tank, an electrolytic tank, a sedimentation tank and a sedimentation dryer, and the wastewater in the regulating tank enters the water distrib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/66C02F1/461C02F1/52C02F101/22
Inventor 赵锡斌
Owner TIANJIN SUNLONG XINGYE TECH