The copper recovery system for micro-etching waste liquids is mainly used to recover copper from the waste liquids generated by the micro-etching process. This type of system is very important in the fields of electronics manufacturing, metal processing, etc., especially when dealing with waste liquids containing copper. Such systems are widely used in electronics manufacturing (e.g. PCB production), metal processing, and chemical industries to reduce the copper content and environmental impact of waste liquids while recovering valuable copper resources.
Micro-etching Waste Liquid Recovery Copper System
The copper recovery system of micro corrosion waste liquid is a technical system used to recover copper from micro-etching waste streams containing copper. The micro-etching process is typically used to remove oxides and other impurities from metal surfaces and is commonly used in the electronics manufacturing industry for processing printed circuit boards. During this process, the resulting waste stream contains large amounts of copper ions and other chemicals that need to be treated and recovered.
Copper recovery system of micro corrosion waste liquid main function
Copper Recovery: Copper is recovered from the waste liquid and can be extracted for reuse. This helps to conserve resources and reduce the cost of waste disposal.
Waste Solution Treatment: Treats waste solutions containing copper to ensure they meet environmental standards and reduce pollution to the environment.
Copper recovery system of micro corrosion waste liquid main components
Pre-treatment unit: removes large impurities and suspended matter from the waste stream and prepares the waste stream for subsequent treatment.
Copper recovery unit:
Electrolysis method: Reduce copper ions to metallic copper through electric current, this method can effectively recover high-purity copper.
Chemical precipitation method: Adding precipitant makes copper ions form insoluble compounds, which are then separated from the waste liquid.
Filtration system: removes solid impurities from the waste stream to ensure the purity of the recovery process.
Concentration unit: Concentrate the copper ions in the waste liquid to improve the efficiency and purity of copper recovery.
Waste liquid treatment unit: treats the recovered waste liquid to ensure that it meets environmental standards and is then discharged or further utilized.
Copper Recovery System of Microcorrosion Waste Liquid Process
The copper recovery process includes waste liquid collection & pretreatment, copper recovery, separation & concentration, waste liquid treatment & discharge.
Copper Recovery/Extraction Process
1. Waste Liquid Collection and Pretreatment
Waste Liquid Collection: Copper-containing waste liquid is collected from the micro-etching process.
Pretreatment: Remove solid impurities and other interfering substances in the waste liquid.
2. Copper Recovery
Copper is extracted by electrolysis or chemical precipitation.
Electrolysis
Preparation: Pre-treated waste liquid is introduced into the electrolyzer.
Electrolysis: An electric current is applied to reduce the copper ions in the waste stream to metallic copper at the cathode, where an inert material is usually used for the anode.
Collection of copper: Copper deposited on the cathode can be periodically removed and further processed.
Chemical Precipitation
Precipitant addition: A precipitant (e.g., hydrogen sulfide, ammonia, etc.) is added to the waste stream to convert the copper ions to insoluble copper compounds (e.g., copper sulfides).
Sedimentation and Separation: The precipitate is allowed to settle in a sedimentation tank and then the solid precipitate is separated by filtration or centrifugation.
Copper Recovery: Copper is extracted from the sediment and further processed.
Copper Recovery System of Microcorrosion Waste Liquid
3. Separation and Concentration
Solid-liquid Separation
Filtration: Removal of solid impurities from the waste liquid using a filter cloth or screen.
Centrifugation: Use centrifugal separators to separate solid precipitates from liquids and improve separation efficiency.
Concentration and Refining
Concentration: Concentrate the copper ions in the waste liquid by evaporation or other methods to increase the concentration of copper.
Refining: further purify copper to improve the quality and purity of copper.
4. Waste Liquid Treatment and Discharge
Treatment of remaining waste liquid: According to the environmental protection requirements, the remaining waste liquid is treated, such as neutralization, redox, or biological treatment, to ensure compliance with the emission standards.
Discharge or reuse: The treated waste liquid can be discharged into the environment or reused.
Electrolytic Breaking Oxidizer – Electrodeposition of Copper Process
The process of electrolytic breaking oxidizer – electrodeposition of copper was used to treat the waste liquid of microerosion. The electrolytic oxidizer breaking process is to use the equipment after the use of micro corrosion waste liquid in the electrode cathode reduction, so that sodium persulfate, ammonium persulfate, and hydrogen peroxide oxidants are reduced from a high concentration to 0. Electrodeposition of copper process is in the oxidant reduced to 0, the use of equipment to make the micro-etching waste liquid in the electrode cathode under the action of the reduction of Cu2+ reduction to a single copper, so that the concentration of waste liquid Cu2+ reduced by more than 95% of the easy wastewater treatment and discharge to reduce the pressure on environmental protection to deal with the Cu2+ and in the process of the by-products of economic value — Electrolytic plate copper (purity greater than 99.95%).
Copper Recovery System of Microcorrosion Waste Liquid Process
Features
The process of electrodeposition of copper is to reduce Cu2+ to elemental copper by using the equipment after the oxidant is reduced to the electrode cathode.
Reducing the concentration of Cu2+ wastewater treatment is easy to reduce the environmental treatment of Cu2+ pressure, and in the process to get the economic value of the by-product – electrolytic plate copper to reduce copper.
The copper ions in the waste etching solution can be recovered and reduced to electrolytic copper powder with high purity and higher copper recovery.
High production efficiency, small cover area.
Technical Parameters
| Model | Waste Liquid Treatment Capacity (Tons/Month) | Electricity Load (kW) | Copper Production Capacity (Tons/Month) | Occupied Area(m2) |
| YZ-WSDJ30 | 30 | 20-30 | 0.75 | 30-30 |
| YZ-WSDJ60 | 60 | 40-50 | 1.5 | 30-40 |
| YZ-WSDJ100 | 100 | 60-70 | 2.5 | 60-70 |
| YZ-WSDJ200 | 200 | 80-100 | 5 | 80-100 |
