Alkaline etching liquid extraction, acidic etching liquid copper recovery.

First Process: Direct electrolysis involves passing the etching waste liquid through an electrolytic deposition process to extract high-purity electrolytic copper, reducing the copper ion concentration in the alkaline etching waste liquid. After adjusting the composition, the treated liquid is returned to the production line. If recycling is not required, copper can be extracted and processed on-site,
Second Process: This process employs solvent extraction, back-extraction, and electroplating for the regeneration treatment of etching waste liquid. The copper ions in the etching waste liquid are extracted and concentrated through the extraction method, achieving non-destructive separation. The extracted liquid and residual liquid are mixed and adjusted in composition to restore etching performance, after which they are fully returned to the etching

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