Electrolysis/ultraviolet device for treating chemical nickel plating wastewater

A technology of electroless nickel plating and ultraviolet device, applied in the direction of water/sewage treatment, metallurgical wastewater treatment, chemical instruments and methods, etc., can solve the problems of easy pollution of ultraviolet lamp tubes, unstable treatment effect, high operating cost, etc., and achieve avoidance Decrease in effect, prevent fouling, and reduce cleaning costs

Inactive Publication Date: 2021-06-18
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of high operating cost, high energy consumption, secondary pollution, easy pollution of ultraviolet lamp tubes, complicated management and unstable treatment effect in the existing method for treating electroless nickel plating wastewater, and provides a An electrolysis / ultraviolet device for treating electroless nickel plating wastewater

Method used

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  • Electrolysis/ultraviolet device for treating chemical nickel plating wastewater
  • Electrolysis/ultraviolet device for treating chemical nickel plating wastewater
  • Electrolysis/ultraviolet device for treating chemical nickel plating wastewater

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specific Embodiment approach 1

[0022] Specific embodiment one: this embodiment is an electrolysis / ultraviolet device for treating chemical nickel plating wastewater, such as Figure 1-Figure 2 As shown, it is specifically composed of electrolytic cell 1, quartz glass tube 2, ultraviolet lamp tube 3, anode plate 4, cathode plate 5, spiral slide 6, water inlet pipe 7, water outlet pipe 8, circulating water pump 9, upper cover 10 and base 11 composition;

[0023] The electrolytic cell 1 is a hollow cylinder structure, and the top is provided with a cover 10 to form a closed inner cavity, and the bottom is provided with a base 11; the quartz glass tube 2 is vertically fixed at the center of the inner bottom surface of the electrolytic cell 1, and The top of the quartz glass tube 2 extends to the top of the upper cover 10 through the upper cover 10, and the top of the quartz glass tube 2 is an open structure; the ultraviolet lamp tube 3 is vertically arranged inside the quartz glass tube 2;

[0024] The spiral ...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that: the electrolytic cell 1 is made of organic glass. Others are the same as the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the anode plate 4 is a titanium-based ruthenium-iridium electrode. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses an electrolysis / ultraviolet device for treating chemical nickel-plating wastewater, and relates to a device for treating chemical nickel-plating wastewater. The invention aims to solve the technical problems of high operation cost, large energy consumption, secondary pollution, easy pollution of an ultraviolet lamp tube, complex management and unstable treatment effect of the existing chemical nickel plating wastewater treatment method. After the chemical nickel-plating wastewater enters an electrolytic bath, Cl <-> in the wastewater is converted into Cl2 through anodic oxidation, the Cl2 is further hydrolyzed into HOCl / OCl <->, the HOCl / OCl <-> can be converted into hydroxyl free radicals and active chlorine groups through irradiation of an ultraviolet lamp, complex-state metal can be converted into free-state metal, meanwhile, the degradation effect on the complex-state metal can also be enhanced through anodic oxidation and ultraviolet photolysis, through co-oxidative degradation and mutual cooperation, the complex breaking effect is greatly improved, complex nickel becomes free nickel ions after complex breaking, then the free nickel ions are reduced into nickel elementary substances through a cathode to be attached to the surface of a cathode plate, and recovery of metal nickel in wastewater is achieved.

Description

technical field [0001] The invention relates to a device for treating chemical nickel plating wastewater. Background technique [0002] In recent years, due to the simple electroless plating process, strong practicability, and many superior characteristics, the electroless plating technology has developed rapidly. Electroless nickel plating is a method of depositing a layer of nickel on the surface of metal products by means of oxidation-reduction without external current. It is widely used in various industries such as electronics, automobiles, and machinery. The electroless nickel plating process needs to add a large amount of complexing agent to make nickel adhere stably to the surface of the material to form a stable and effective coating. Excessive complexes will react with nickel ions to produce stable chelates. Because the nickel plating waste liquid contains a large amount of metal nickel, and nickel has carcinogenic and sensitizing effects, and is also an expensive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C25C1/08C25C7/00C02F1/461C02F1/32C02F1/72C02F101/12C02F101/20C02F103/16
CPCC02F9/00C25C1/08C25C7/00C02F1/461C02F1/32C02F1/72C02F2101/12C02F2101/20C02F2103/16C02F2201/3223C02F2201/324C02F2201/461
Inventor 邵鹏辉余真罗旭彪吴珍良谢观生黄涌杨利明石慧
Owner NANCHANG HANGKONG UNIVERSITY
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