PCB Production and Waste Management Innovations

PCB production involves intricate processes, including dry methods like design and routing, as well as wet methods such as chemical plating and etching. These processes generate wastewater containing harmful substances, necessitating effective treatment to meet environmental standards.

Wastewater Treatment in PCB Production

• Resource Recovery: Advanced membrane separation technology concentrates heavy metals in plate washing wastewater for resource utilization.
• Electrolysis Recycling: Acid and alkali copper chloride etching waste liquid undergoes extraction electrolysis recycling, creating a closed-loop system.
• Copper Recovery: Micro-etching solution with copper sulfate undergoes extraction and electrolysis to recover copper into electrolytic plates.
• Solvent Recycling: Waste solvent recovery technology reduces used solvents to new ones for cost savings and eco-friendly production.
• Silver Recycling: Fixer silver recovery technology effectively separates silver for recycling, reducing treatment complexity.
• Board and Residue Treatment: Advanced technology separates metal from non-metal parts of PCBs with high recovery rates and no secondary pollution.

Waste Gas Treatment in PCB Production

Adhering to the 3R principle (reduce, reuse, recycle), PCB production focuses on:

• Wastewater Recycling: Emphasizing recycling of wastewater, especially from plate washing.
• Resource Recovery: Implementing technologies for regeneration, recycling, and resource recovery of waste liquids.
• Comprehensive Utilization: Utilizing waste PCBs and scraps for various applications.

PCB manufacturers are adopting water treatment technologies to ensure compliance with discharge standards, minimizing environmental impact.