Abstract:

The wastewater containing heavy metals mostly was treated through alkali chemicals processing traditionally，which generally has the problem of higher processing costs and recovery the valuable resources hardly.In this article，we introduced the membrane separation process applied in the Zijinshan gold-copper mine with the treatment of copper-bearing acid mine drainage.The process of initial coagulation sedimentation-fibre filtration-filtration -ultrafilitration-reverse osmosis-recovery（water and copper） was adopted.For the non-compliance of pretreatment，the low flux and the membrane fouling in the original process，the operational processes and the pretreatment processes were optimized.The operating results show that the technique is suitable for the large-scale application in mine and conducive to the development of the circular economy of mine.

Key words: membrane separation technology, acid mining drainage, resourcization, zero discharge