Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for efficiently separating, concentrating and recycling nickel in waste chemical nickel plating liquid

An electroless nickel plating and recycling technology, applied in chemical instruments and methods, improvement of process efficiency, optics, etc., can solve problems such as difficulty in nickel recovery, secondary pollution, waste of resources, etc., and achieve low secondary pollution and high recovery rate High, environmental protection effect of the treatment process

Active Publication Date: 2021-10-29
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main treatment methods of electroless nickel plating waste liquid are chemical precipitation method, Fenton method, etc. These methods often need to add a large amount of sewage treatment chemicals, which are costly, and at the same time, it is difficult to recover nickel in waste liquid, resulting in waste of resources and a large amount of waste. Sludge, easy to cause secondary pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for efficiently separating, concentrating and recycling nickel in waste chemical nickel plating liquid
  • Method for efficiently separating, concentrating and recycling nickel in waste chemical nickel plating liquid
  • Method for efficiently separating, concentrating and recycling nickel in waste chemical nickel plating liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for efficient separation, concentration and resource recovery of nickel in electroless nickel plating waste liquid, comprising the following steps:

[0036] S1: First, filter the electroless nickel plating waste liquid through a precision filtration system, and filter once to remove more than 99% of the particulate impurities in the waste liquid. The precision filtration system is PRZ-DSF140 produced by Preser Company precision filter;

[0037] S2: if figure 2 As shown, the electroless nickel plating waste liquid after the removal of particulate impurities in the S1 step is electrodialyzed through the one-way membrane, and the electroless nickel plating waste liquid is electrodialyzed through the full cation exchange membrane stack. Under the action, it enters the nickel-containing concentrated solution through the cation exchange membrane to realize the separation and concentration of nickel in the electroless nickel plating waste solution;

[0038] The nic...

Embodiment 2

[0048] A method for efficient separation, concentration and resource recovery of nickel in electroless nickel plating waste liquid, comprising the following steps:

[0049] S1: First, the electroless nickel plating waste liquid is filtered through a precision filtration system for 2 times to remove more than 99% of the particulate impurities in the waste liquid. The precision filtration system is PRZ-DSF140 produced by Preser precision filter;

[0050] S2: if figure 2 As shown, the electroless nickel plating waste liquid after the removal of particulate impurities in the S1 step is electrodialyzed through the one-way membrane, and the electroless nickel plating waste liquid is electrodialyzed through the full cation exchange membrane stack. Under the action, it enters the nickel-containing concentrated solution through the cation exchange membrane to realize the separation and concentration of nickel in the electroless nickel plating waste solution;

[0051] The nickel-cont...

Embodiment 3

[0060] A method for efficient separation, concentration and resource recovery of nickel in electroless nickel plating waste liquid, comprising the following steps:

[0061] S1: First, filter the electroless nickel plating waste liquid through a precision filtration system for 3 times to remove more than 99% of the particulate impurities in the waste liquid. The precision filtration system is PRZ-DSF140 produced by Preser precision filter;

[0062] S2: if figure 2 As shown, the electroless nickel plating waste liquid after the removal of particulate impurities in the S1 step is electrodialyzed through the one-way membrane, and the electroless nickel plating waste liquid is electrodialyzed through the full cation exchange membrane stack. Under the action, it enters the nickel-containing concentrated solution through the cation exchange membrane to realize the separation and concentration of nickel in the electroless nickel plating waste solution;

[0063] The nickel-containin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for efficiently separating, concentrating and recycling nickel in waste chemical nickel plating liquid. The method comprises the following steps: S1, filtering the waste chemical nickel plating liquid through a precision filtering system to remove particle impurities in the waste liquid; S2, carrying out electrodialysis on the waste chemical nickel plating liquid from which the particle impurities have been removed through a one-way membrane, and separating and concentrating nickel in the waste chemical nickel plating liquid under the action of electric field force; S3, treating a nickel-containing concentrated solution obtained in the step S2 through a rotational flow electrolysis device, and reducing and depositing nickel ions into metal nickel at a cathode; and S4, allowing the nickel-containing concentrated solution treated in the step 3 to enter the step 2 for cyclic treatment, and further concentrating and recycling nickel in the nickel-containing concentrated solution through the electrodialysis effect of a full cation exchange membrane stack, wherein a cycle number is 3-5 times. According to the method, nickel in the waste chemical nickel plating liquid is recycled, a recycling rate is higher, the whole treatment process is more environmentally friendly, and secondary pollution is not likely to be caused.

Description

technical field [0001] The invention relates to the technical field of industrial waste water treatment and recycling, in particular to a method for efficient separation, concentration and resource recovery of nickel in electroless nickel plating waste liquid. Background technique [0002] Electroplating is a common process in the national processing and manufacturing industry, and it is widely used in machinery, electronics, aerospace and other fields. Electroless nickel plating is an important branch of the electroplating industry. Due to its excellent corrosion resistance, wear resistance, weldability and uniform thickness of the coating, it has been widely used in the world. Electroless nickel plating The rapid development of the industry has brought about a large number of waste electroless nickel plating solutions that need to be treated. The electroless nickel plating waste liquid generally contains 2-5g / L heavy metal nickel. If it is not effectively treated and disc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C25C1/08C22B23/00C22B7/00C02F103/16
CPCC02F1/001C02F1/4693C02F1/461C25C1/08C22B23/0453C22B7/006C02F2103/16Y02P10/20
Inventor 贺框黄凯华张明杨杜建伟胡小英李铭珊任艳玲关伟
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP