POREX 博滤克斯（宝利事）管式膜案例分析-印刷线路板厂含铜废水处理.pdf

P O R E X F I LT R AT I O N | CASE STUDY COPPER RECLAIM ® POREX Tubular Membrane Filter (TMF)™ Applied in a Copper Wastewater Reclaim System for a Printed Circuit Board Facility Abstract A Printed Circuit Board, (PCB), is used to mechanically support and Introduction electrically connect electronic components. It uses conductive pathways, tracks or signal traces etched from copper sheets which are then laminated onto a non-conductive substrate. The PCB manufacturing process is very complex, and many kinds of heavy metal wastewater and organic wastewa- ter are drained from PCB facilities. Copper contaminated wastewater is one stream. The normal utilization of the copper foil in the manufacturing process is typically only 30-40% of the total amount used. The remainder of the copper is dissolved; with a large volume ending up in the used etch solution and wastewater. Reuse of the water and copper is a matter of great importance and cost saving to the manufacturing facility. This specific manufacturer is one of the world’s largest PCB contract electronic manufacturing groups. They have built several copper wastewater reclaim systems with Porex Tubular Membrane Filter (TMF)™ systems. The combined capacity of the existing treatment systems using Porex TMF is more than 500m3/hr.