Resource recycling device for nickel-containing heavy metal wastewater

Abstract

The invention discloses a resource recycling device for nickel-containing heavy metal wastewater, belonging to the field of nickel-containing heavy metal wastewater recovery. The resource recycling device comprises an electrolytic nickel recovery system, an electrolyte ultrafiltration system and an electrodialysis circulation nickel removal system, wherein the electrolytic nickel recovery system comprises a sewage pump, a direct current power supply, an electrolytic bath and an electrode plate; the electrolyte ultrafiltration system consists of a sewage pump, an ultrafiltration reactor and a water storage tank; and the electrodialysis circulation nickel removal system consists of a sewage pump, a direct-current power supply and an electrodialyzer. The device has the advantages that the structure is simple, nickel can be recycled, wastewater can be recycled, and secondary pollutants are not generated. The method is suitable for treatment of nickel-containing heavy metal wastewater in electroplating enterprises, and has environmental and economic benefits.

Description

technical field [0001] The invention relates to the technical field of recycling nickel-containing heavy metal wastewater, in particular to a resource recovery device for nickel-containing heavy metal wastewater. Background technique [0002] With the continuous development of the electroplating industry, the discharge of electroplating wastewater is increasing, and the huge pollution it brings cannot be ignored. The electroplating wastewater mainly comes from the cleaning water of the plating parts, the electroplating waste liquid, the washing of the plates, and the floor of the workshop. The wastewater generated during the nickel plating process contains a large amount of heavy metal nickel. Nickel is difficult to biodegrade in the environment. While polluting the environment, it will eventually cause harm to the human body through enrichment in organisms. Incorrect treatment of nickel-containing wastewater also leads to a large amount of Waste of metal resources. [000...

AI Technical Summary

Problems solved by technology

The chemical precipitation method is usually to add chemicals to the wastewater. This method is easy to cause secondary pollution, and the remaining sludge containing heavy metals is difficult to be effectively treated; the concentration of the concentrated solution obtained by the reverse osmosis method is usually not High and the reverse osmosis membrane is easy to clog; the ion exchange method is slow and the regeneration of the ion exchange resin is not complete

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