金属涂装废水资源化回收的处理工艺研究  

Research on the Treatment Process of Recycling Metal Coating Wastewater Resources

作　　者：张艳芳 ZHANG Yanfang(Foshan Shenglang Environmental Science Co.,Ltd.,Foshan 528100,China)

机构地区：[1]佛山市晟朗环境科学有限公司,广东佛山528100

出　　处：《中国资源综合利用》2024年第8期251-253,共3页China Resources Comprehensive Utilization

摘　　要：在金属涂装废水资源化回收处理中,通过微滤、混凝、化学氧化法能够有效将有机污染物分解为无害物质。通过离子交换和吸附去除废水中的重金属离子,确保废水达到安全排放标准。通过电解、溶剂萃取等技术,将这些金属从废水中分离出来,实现资源的再利用。经过上述处理后的废水可以通过蒸发结晶技术进一步净化,制得高纯度的水。蒸发结晶能够去除水中的剩余杂质,得到纯净的水资源,供工业或生活使用。在应用结果中,化学需氧量(Chemical Oxygen Demand,COD)和生化需氧量(Biochemical Oxygen Demand,BOD)的去除率均超过98%,重金属离子的去除率也达到95%以上,pH值从偏酸性调整至接近中性。证明本次试验采用的废水处理工艺是有效的,能够显著减少废水中的有害物质含量,使其达到国家相关排放标准。In the resource recovery and treatment of metal coating wastewater,organic pollutants can be effectively decomposed into harmless substances through microfiltration,coagulation,and chemical oxidation methods.By ion exchange and adsorption,heavy metal ions are removed from wastewater to ensure that it meets safe discharge standards.By using technologies such as electrolysis and solvent extraction,these metals are separated from wastewater to achieve resource reuse.The wastewater treated above can be further purified by evaporative crystallization technology to produce high-purity water.Evaporative crystallization can remove residual impurities from water and obtain pure water resources for industrial or domestic use.In the application results,The removal rates of Chemical Oxygen Demand(COD)and Biochemical Oxygen Demand(BOD)both exceed 98%,and the removal rates of heavy metal ions are also above 95%,adjust the pH value from slightly acidic to near neutral.Prove that the wastewater treatment process used in this experiment is effective and can significantly reduce the content of harmful substances in the wastewater,making it meet the relevant national discharge standards.

关 键 词：金属涂装 资源化 回收处理 离子交换法 溶剂萃取 

分 类 号：X703[环境科学与工程—环境工程]