HIGH-EFFICIENCY BIO-ELECTROCHEMICAL WASTEWATER TREATMENT SYSTEM FOR COPPER REMOVAL

摘要

Treatment of wastewater containing heavy metal ions, and providing an efficient bio-electrochemical copper ion removal system. Based on the technology of microbial fuel cell and membrane bioreactor, using sacrificial aluminum anode and externally supplied power from microbial fuel cell, aluminum micro-electrolysis is realized. Aluminum hydrate ion, produced by micro-electrolysis of aluminum under the action of water molecules, is naturally efficient flocculating agent. The flocculating agent of this system is self-generated without any external reagent addition. The process of flocculation is mild, and the flocculation removal efficiency of copper ion is high. Under the filtration and screening effect of bifunctional conductive membrane, the copper ion in the cathode chamber can be completely removed. The concentration of the copper ion in the effluent of the system can fully meet the national first-level discharge standard, and the effluent can be recycled and reused.