Anodizing Wastewater Treatment-The Complete Guide
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Anodizing technology is widely used as a standard and leading technology in surface treatment in the electroplating industry.
Usually, to have better surface characteristics and glossiness, most metal components, such as aluminum parts, need to undergo the anodizing process, and a dense metal oxide film with a certain glossiness, such as nickel film, is covered on its surface.
In the anodizing process, the metal to be plated, such as nickel, is usually used as the anode, and the metal component to be plated, such as aluminum parts, is used as the cathode. The metal to be plated at the anode loses electrons and becomes nickel ions by electrochemical method, then covers the metal component to be plated under the action of the electric field, thereby completing the electroplating process of the plated metal component.
Usually, before the anodizing process, the metal component needs to be degreased by acid and alkali, and after anodizing, the surface of the plated metal component needs to be sealed. At present, most electroplating companies use nickel acetate as a sealing agent. In this process, the company will produce a large amount of degreasing wastewater, acid, alkali, and nickel-containing wastewater. These wastewaters contain a strictly controlled type of pollutant nickel, so they must be adequately treated before discharge.
What is anodizing
Anodizing is an electrochemical oxidation process in which a metal or alloy, such as aluminum and its alloys, forms an oxide film on its surface under the action of an applied current in the corresponding electrolyte and specific process conditions. This oxide film has protective, decorative, and other functional properties, such as improving corrosion resistance, wear resistance, hardness, and insulation performance.
The principle of anodizing is mainly to use electrolysis to make metal or alloy parts act as anodes and to form an oxide film on the surface in electrolytes. The formation of this oxide film not only changes the state and properties of the metal surface but also provides additional protection.
Anodizing technology is widely used in many fields, such as mechanical parts, aircraft and automobile parts, precision instruments, radio equipment, daily necessities, and architectural decoration. It can enhance the product's corrosion resistance, wear resistance, and decorativeness, making it more suitable for harsh environments.
In general, anodizing is a vital metal surface treatment technology that provides additional protection and decorative effects by changing the state and properties of the metal surface.
Anodizing process flow
The main process of anodizing treatment:
Degreasing and oil removal → hot water washing → rust removal → cold water washing → phosphating/passivation → cold water washing → anodizing → cold water washing → powder spraying and coloring → sealing treatment → water washing → drying → finished product.
Read more details:https://wxyosun.com/anodizing-....wastewater-treatment
Usually, to have better surface characteristics and glossiness, most metal components, such as aluminum parts, need to undergo the anodizing process, and a dense metal oxide film with a certain glossiness, such as nickel film, is covered on its surface.
In the anodizing process, the metal to be plated, such as nickel, is usually used as the anode, and the metal component to be plated, such as aluminum parts, is used as the cathode. The metal to be plated at the anode loses electrons and becomes nickel ions by electrochemical method, then covers the metal component to be plated under the action of the electric field, thereby completing the electroplating process of the plated metal component.
Usually, before the anodizing process, the metal component needs to be degreased by acid and alkali, and after anodizing, the surface of the plated metal component needs to be sealed. At present, most electroplating companies use nickel acetate as a sealing agent. In this process, the company will produce a large amount of degreasing wastewater, acid, alkali, and nickel-containing wastewater. These wastewaters contain a strictly controlled type of pollutant nickel, so they must be adequately treated before discharge.
What is anodizing
Anodizing is an electrochemical oxidation process in which a metal or alloy, such as aluminum and its alloys, forms an oxide film on its surface under the action of an applied current in the corresponding electrolyte and specific process conditions. This oxide film has protective, decorative, and other functional properties, such as improving corrosion resistance, wear resistance, hardness, and insulation performance.
The principle of anodizing is mainly to use electrolysis to make metal or alloy parts act as anodes and to form an oxide film on the surface in electrolytes. The formation of this oxide film not only changes the state and properties of the metal surface but also provides additional protection.
Anodizing technology is widely used in many fields, such as mechanical parts, aircraft and automobile parts, precision instruments, radio equipment, daily necessities, and architectural decoration. It can enhance the product's corrosion resistance, wear resistance, and decorativeness, making it more suitable for harsh environments.
In general, anodizing is a vital metal surface treatment technology that provides additional protection and decorative effects by changing the state and properties of the metal surface.
Anodizing process flow
The main process of anodizing treatment:
Degreasing and oil removal → hot water washing → rust removal → cold water washing → phosphating/passivation → cold water washing → anodizing → cold water washing → powder spraying and coloring → sealing treatment → water washing → drying → finished product.
Read more details:https://wxyosun.com/anodizing-....wastewater-treatment
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