1results about How to "Resolve enrichment" patented technology

This invention discloses a method for multi-stage treatment of copper-containing wastewater based on graphene oxide-assisted electric field-driven process. The method utilizes a graphene oxide-assisted N / O / S multi-coordinated copper ion-imprinted cation exchange membrane as the selective separation interface, employs a membrane arrangement of graphene oxide-assisted copper ion-imprinted cation exchange membrane—anion exchange membrane—cation exchange membrane, and utilizes an electric field for migration and release, with endogenous carbonate as the circulating crystallization medium in a continuous treatment system. This system can synergistically achieve the decomposition and transformation of complexed copper, and the treatment of Cu... 2+ Selective migration and enrichment, polarity reversal release, and in-situ crystallization recovery form "complex copper transformation-Cu". 2+ A closed-loop treatment pathway of "selective enrichment at the membrane interface – reverse release – internal carbonate recycling and crystallization recovery" is employed. This technology can reduce the consumption of external precipitants, lower the post-treatment pressure of copper-containing concentrate, and increase the value of copper resource recovery, providing strong support for the in-depth treatment and resource utilization of wastewater containing complexed copper.