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A treatment method for recovering nickel in nickel-containing waste liquid

A treatment method and technology for nickel waste liquid, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as environmental pollution, nickel cannot be effectively recovered, and achieve the speed of analysis Fast, simple operation, high nickel yield effect

Inactive Publication Date: 2011-12-14
JINCHUAN GROUP LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the above-mentioned nickel-containing wastewater is usually directly discharged, which will inevitably cause the nickel in the nickel-containing wastewater to not be effectively recovered, and also cause environmental pollution.

Method used

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  • A treatment method for recovering nickel in nickel-containing waste liquid
  • A treatment method for recovering nickel in nickel-containing waste liquid
  • A treatment method for recovering nickel in nickel-containing waste liquid

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Embodiment 1

[0019] An ion-exchange column with a specification of Φ=100mm and L=1340mm is used, and 8.3L of resin is loaded inside; 2 SO 4 After pretreatment and transformation with NaOH solution with a mass percentage concentration of 5%, the nickel in the waste liquid of the nickel production system is adsorbed and recovered. The nickel content in the stock solution is about 0.02g / L, pH=7.8, temperature 65~70°C, adsorption flow rate 50L / h, nickel content in the solution after adsorption is ≤0.002g / l, and then 20% H 2 SO 4 Analysis, the concentration of liquid nickel after analysis and enrichment is 53.82 g / l, and the volume is 8.4L. The main data related to the resin adsorption and analysis process are shown in Table 1 and Table 2, respectively.

[0020] Table 1 Data sheet of resin adsorption process

[0021] serial number Sample number Volume (L) Cumulative volume (L) cumulative volume (BV) Analysis result (g / l) Supernatant (g / l) 1 L1 400 400 48.2 0.0...

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Abstract

A treatment method for recovering nickel from nickel-containing waste liquid, involving an ion exchange resin, through adsorption, analysis and other working processes, to recover nickel from nickel-containing waste water, characterized in that the treatment process is to process nickel produced in the nickel production system After the nickel-containing wastewater is filtered, the ion-exchange resin is used to absorb and recover ionic nickel from the nickel-containing wastewater, and the nickel content in the waste liquid is absorbed to below 2mg / L before being discharged. A treatment method for recovering nickel in nickel-containing waste liquid of the present invention adopts ion exchange resin to absorb and recover nickel, and has the advantages of high nickel yield, fast analysis speed, high concentration of liquid nickel ions after analysis, and simple operation. At the same time, When the method is applied to actual production, it will not affect the acid balance and volume balance of the production system, can produce certain economic benefits, and can discharge the nickel electrolysis tail liquid up to the standard.

Description

technical field [0001] The invention discloses a treatment method for recovering nickel from nickel-containing waste water, which relates to a method for recovering nickel from nickel-containing waste water through adsorption, analysis and other working processes of an ion exchange resin. Background technique [0002] Nickel electrolysis (electrowinning) production process requires the preparation of nickel carbonate. During the preparation of nickel carbonate, a large amount of nickel-containing wastewater will be generated, and the nickel content is generally around 0.1g / l. [0003] At present, the above-mentioned nickel-containing wastewater is usually directly discharged, which will inevitably cause the nickel in the nickel-containing wastewater to not be effectively recovered, and also cause environmental pollution. Contents of the invention [0004] The purpose of the present invention is to address the shortcomings of the above prior art, to provide a treatment meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/00C02F9/04C02F101/20
CPCY02P10/20
Inventor 张四增赵重张树峰卢建波周通杨继明章毅
Owner JINCHUAN GROUP LIMITED
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