High-utilization-rate electroplating wastewater recycling device

Abstract

The invention discloses an electroplating waste water recycling device with high utilization rate, which comprises a waste water treatment device body, an electrolytic cell and a filter pool. An electrolytic cell is arranged above the waste water treatment device body. A sewage inlet is provided, a first solenoid valve is provided at the middle of the bottom of the electrolytic cell, a filter screen is provided inside the filter pool, and a suction pump is provided on one side of the bottom of the filter pool, and the suction pump passes through The return pipe communicates with the electrolytic cell. In the present invention, four stirring wheels are arranged on the side wall of the electrolytic cell, and the sewage can all be contacted with the electrodes under the stirring action of the four stirring wheels, thereby improving the reaction rate of the electrolytic reaction and making the metal ions in the sewage The reaction is sufficient and the work efficiency is improved. At the same time, the bottom of the electrolytic cell is a conical structure, which can effectively avoid the accumulation of metal deposits and facilitate the recovery of metals.

Description

technical field [0001] The invention relates to the technical field of electroplating wastewater treatment, in particular to a recycling device for electroplating wastewater with high utilization rate. Background technique [0002] Electroplating wastewater is a variety of wastewater discharged during the electroplating production process. The sources of electroplating wastewater are generally: plating cleaning water, waste electroplating solution, other wastewater and equipment cooling water. The water quality of electroplating wastewater is complex and its composition is difficult to control. It contains chromium , cadmium, nickel, copper, zinc, gold, silver and other heavy metal ions and cyanide, etc., some of which are highly toxic substances that are carcinogenic, teratogenic, and mutagenic. [0003] At present, the treatment of electroplating wastewater in China usually adopts a physical and chemical method. This method requires a large amount of chemicals, which will ...

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Problems solved by technology

[0003] At present, the treatment of electroplating wastewater in China usually adopts a physical and chemical method. This method requires a large amount of chemicals, which will generate a large amount of physical and chemical sludge. Precious metals cannot be recovered. On the other hand, metal cations in wastewater can also be replaced by electrolysis, but the electrolysis efficiency of traditional electrolysis devices is not high, and precipitated metals are easy to accumulate and inconvenient to recycle.

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