Micro-etching Waste Liquid Copper Recovery System

Wastewater treatment capacity: 30-200 ton/ month
Copper production capacity: 0.75-5 ton/month

Micro-etching waste liquid copper recovery system is commonly used in semiconductor manufacturing and printed circuit board production. The liquid usually contains micro-scale copper particles, which can be effectively extracted through a series of steps that utilize physical and chemical properties.

Micro-etching Waste Liquid Copper Recovery System

Micro-etching waste liquid copper recovery system is also called a micro-etching waste liquid electrolytic regeneration system. It is a waste micro-etching liquid regeneration and copper recovery device that uses new energy-saving and emission-reduction processes and new technologies. The system includes four sections: pre-treatment oxygen breaking, electrolysis, regeneration liquid adjustment, and tail liquid and tail gas treatment. It is a high-tech and environmentally friendly equipment for electrolytic treatment of waste liquid generated after micro-etching system copper surface processing.

Micro-etching waste liquid copper recovery system is a method of copper reprocessing and often used to solve the problem of waste liquid recovery in printed circuit board (PCB) surface treatment. Micro-etching is a pre-treatment process in the production process of circuit boards; its function is to roughen the copper surface and increase the bonding strength with the coating. Then, the electrolytic oxygen breaking-electrolytic copper recovery process treats the micro-etching liquid.

Process Of Micro-etching Waste Liquid Copper Recovery System

The electrolytic removal of oxidants – copper electrodeposition process is used to treat micro-etching waste liquid. The electrolytic removal of oxidants process is to use equipment to reduce the oxidants such as sodium persulfate, ammonium persulfate and hydrogen peroxide under the reduction effect of the electrode cathode after the micro-etching waste liquid is reduced from a high concentration to 0.

The copper electrodeposition process is to use equipment to reduce the Cu2+ of the micro-etching waste liquid to elemental copper under the reduction effect of the electrode cathode after the oxidant is reduced to. Reducing the concentration of Cu2+ in the waste liquid makes it easier to treat and discharge wastewater, reducing the pressure of environmental protection treatment of Cu2+, and obtaining a byproduct with economic value in the process – electrolytic plate copper to reduce copper.

Working principle

The waste liquid is first carefully pre-treated, concentrating the copper ions through advanced filtration technology, and also neutralizing harmful chemicals that may damage subsequent processes. A controlled electric current is then used to promote rapid copper plating from the processed waste liquid. The main purpose is to convert low-concentration copper solutions into valuable metal forms in real time.

Completing this cycle is an effective post-recycling treatment that ensures that any residual contaminants are managed responsibly before being discharged back into the wastewater system or recycling stream.

process features

The copper ions in the waste etching solution are recovered and reduced to electrolytic copper powder with high purity and high copper recovery rate;
The liquid is recycled, the process is simple and reliable, and the online production and operation cost is low;
The operation and maintenance are convenient, and the extraction of pure copper can be achieved at normal pressure and room temperature;
The cheap copper compound is converted into high-priced high-purity copper, and the copper recovery rate is more than 98%, with good economic benefits
The wastewater discharge in the micro-etching process is reduced, zero pollution discharge is achieved, and the output purity is high, which has good environmental benefits;
The process is simple, the equipment has a high degree of automation, high production efficiency, and a small footprint.

Technical Parameters

Model	Wastewater treatment capacity (Ton/month)	Electricity load(kw)	Copper production capacity (Ton/month)	Area
YZ-WSDJ30	30T	20-30kw	0.75T	20-30m²
YZ-WSDJ60	60T	40-50kw	1.5T	30-40m²
YZ-WSDJ100	100T	60-70kw	2.5T	60-70m²
YZ-WSDJ200	200T	80-100kw	5T	80-100m²