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Resource recycling device for nickel-containing heavy metal wastewater

A waste water recovery and heavy metal technology, applied in water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of slow ion exchange rate, low concentration of concentrated solution, and easy clogging of reverse osmosis membrane, etc., to achieve Strong ability to adapt to changes in water volume, increase the concentration of nickel ions, and reduce the concentration of nickel ions

Active Publication Date: 2020-04-17
ZHAOQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Resource recycling device for nickel-containing heavy metal wastewater

Examples

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Embodiment Construction

[0018] The present invention is further described in conjunction with the following examples.

[0019] The present invention works by combining figure 1 , the original electroplating nickel-containing wastewater produced by the electroplating factory enters the first water storage tank 1, and the first water storage tank 1 also contains the reflux water containing higher nickel ion concentration produced by the concentrated water outlet F of the electrodialyzer 10, the first water storage tank 1 The waste water in the water storage tank 1 enters the electrolyzer through the first sewage pump 2, and the waste water is electrolyzed in the electrolyzer applying direct current. The tank enters the ultrafiltration filter reactor 5 through the second sewage pump 4, and the electrolytic waste liquid entering the ultrafiltration filter reactor 5 is divided into two kinds of water quality after ultrafiltration, and the particle size of the material contained in the outlet A is generall...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/20
CPCC02F9/00C02F1/444C02F1/4693C02F1/461C02F2101/20C02F2301/046
Inventor 彭昌盛李帅戴敏李俊鑫曾祥泳
Owner ZHAOQING UNIV
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