Fe_xO_y@GAC活化过硫酸盐处理络合铜废水的研究  

Treatment of Copper Complexes Enriched Wastewater Using Fe_xO_y@GAC Activation Persulfate

作　　者：张昊楠[1] 唐海[1] 秦宝雨 王军刚 徐建平[1] 

机构地区：[1]安徽工程大学生物与化学工程学院,安徽芜湖241000 [2]重庆三峡环保<集团>有限公司,重庆401147

出　　处：《中国给水排水》2017年第9期80-84,共5页China Water & Wastewater

基　　金：安徽省自然科学基金资助项目(1608085ME118);安徽省高校优秀青年人才重点项目(gxyqZD2016120)

摘　　要：络合铜废水因来源广、处理难,一直是工业废水处理难点之一。以Fe_xO_y@GAC非均相活化过硫酸盐(PS)产生硫酸根自由基处理络合铜废水,重点考察了反应体系中初始p H值、催化剂投加量、过硫酸盐初始浓度、反应时间以及络合铜初始浓度等因素对总铜去除效果的影响,并对其破络机制进行初探。结果表明,对于低浓度EDTA-Cu废水(Cu^(2+)浓度为13.6 mg/L),在初始p H值=3.0、ρ(Fe_xO_y@GAC)=0.4 g/L、n(PS)=2.0 mmol/L、t=45 min、沉淀p H值=9.0的最佳条件下,对总铜的去除率可达到最高值98.6%,出水总铜浓度为0.18 mg/L,可达到污水综合排放的一级标准。The copper complexes enriched wastewater is a serious environmental challenge, due to its wide sources and significant difficulties in treatment. A heterogeneous system, FexOy@ GAC-aetivated perslfate, was applied to treat copper complex wastewaters （CCW） , and to evaluate influences of fac- tors, such as initial pH value, catalyst dosage, initial persulfate concentration, reaction time and initial CCW concentration. For a EDTA-Cu wastewater containing 13.6 mg/L Cu^2＋ , with operational conditions optimized as following ： initial pH = 3.0, FexOy@ GAC dosage = O. 4 g/L, persulfate = 2.0 retool/L, re- action time = 45 min, and precipitate pH = 9.0, the concentration of copper in the effluent was O. 18 mg/ L with a removal rate of 98.6% , which was in compliance with the first grade of Integrated Wastewater Discharge Standard.

关 键 词：络合铜 FexOy@GAC 过硫酸盐 活化 

分 类 号：X781.1[环境科学与工程—环境工程]