环境工程学报2025，Vol.19Issue(4)：833-842,10.DOI:10.12030/j.cjee.202409079
还原置换-Fenton氧化联合处理实际有机酸性含铜蚀刻液
Treatment of actual high concentration organic acidic copper-containing etching fluid by a combined process of reduction displacement-Fenton oxidation
摘要
Abstract
For a high-concentration organic acidic copper-containing etching waste solution in Xi'an,a combined process of iron filing displacement and two-stage Fenton was designed for resource recovery of copper and degradation of organic matter.In this study,the effects of initial pH and iron filing dosage on the displacement reaction,and 30％H2O2 and Fe2+dosages on the two-stage Fenton were discussed.Copper powder was characterized and its purity was analyzed.Results showed that the displacement rate of Cu reached 98.9％with a purity of 92.7％under the optimal reaction conditions for the displacement reaction:initial pH=5.3,2.0 times the theoretical value of iron filings;the optimal reaction conditions for the first stage Fenton were initial pH=3.5,0.3 times the theoretical value of H2O2 dosage,and 0.1 mol·L-1 Fe2+dosage;the optimal reaction conditions for the second stage Fenton were initial pH=3.5,0.7 times the theoretical value of H2O2 dosage,and 0.1 mol·L-1 Fe2+dosage.The COD of etching solution was reduced from 1.73×105 mg·L-1 to 7.9×103 mg·L-1,meeting the influent requirement of the subsequent biological unit(＜1 × 104 mg·L-1).关键词
铁屑置换/芬顿工艺/含铜蚀刻液/有机废水/资源再生Key words
iron filing displacement/Fenton process/copper-containing etching fluid/organic wastewater/resource regeneration分类
环境科学引用本文复制引用
罗振宇,虞俊一,肖卿滢,王锦涛,袁鑫凯,熊贞晟,邵鹏辉,罗旭彪..还原置换-Fenton氧化联合处理实际有机酸性含铜蚀刻液[J].环境工程学报,2025,19(4):833-842,10.基金项目
国家自然科学面上基金资助项目(52470149) （52470149）
国家自然科学杰青基金资助项目(52125002) （52125002）
