VUV/O_3降解选矿药剂酯-105的实验研究  

Degradation of Ester-105 of Beneficiation Reagent by VUV/O_3

作　　者：张大超 吴梦 陈敏 廖圆圆 王春英 ZHANG Dachao;WU Meng;CHEN Min;LIAO Yuanyuan;WANG Chunying(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control: Ganzhou 341000,China)

机构地区：[1]江西理工大学资源与环境工程学院江西省矿冶环境污染控制重点实验室,江西赣州341000

出　　处：《水处理技术》2019年第5期77-81,共5页Technology of Water Treatment

基　　金：中国博士后科学基金项目(2015M582776XE;2016T90967)

摘　　要：针对选矿废水残留大量浮选药剂、成分复杂,制约了矿山废水回用的问题,采用VUV/O_3的方法研究处理含酯-105的选矿模拟废水。结果表明,同等反应条件下,15 min内3种工艺对酯-105废水的降解效果为VUV/O_3> O_3> VUV。在VUV光源功率15 W,溶液初始pH=10,O_3的质量流量为6 g/h,反应10 min后,VUV/O_3对酯-105废水的降解效果最好,降解率达到98.71%;6种共存离子对VUV/O_3降解酯-105废水的影响作用大小为Ca^(2+)>CO_3^(2-)>SO_4^(2-)>SiO_3^(2-)>Cl^-(Na^+)。VUV/O_3在降解酯-105废水的过程中,HO·对酯-105废水的降解起主要作用,反应20 min后,溶液中TOC的降解率达到平衡,TOC的质量浓度下降了4.48 mg/L。由此可见,利用VUV/O_3技术对酯-105进行处理,高效可行,且无二次污染。The reuse of mine wastewater is restricted for the large amount of complex flotation reagents remaining in the beneficiation wastewater. The treatment of beneficiation simulated wastewater containing ester-105 by VUV/O3 was studied. The results showed that, the degradation effects of three processes on ester-105 wastewater within 15 min were: VUV/O3> O3> VUV. Under the conditions of VUV light source was 15 W, initial pH was 10,the mass flow rate of O3 was 6 g/h, after 10 min reaction, VUV/O3 had the best degradation effect, and the degradation rate of ester-105 wastewater rate reached 98.71%. The effects of 6 kinds of coexisting ions on the degradation of ester wastewater by VUV/O3 were: Ca2+>CO32->SO42->SiO32->Cl-(Na+).The main effect of the degradation of ester-105 wastewater was HO·, after 20 min, the degradation rate of TOC in the solution reached a balance, and the mass concentration of TOC decreased with 4.48 mg/L. It can be seen that the treatment of ester-105 by VUV/O3 technology is efficient and feasible without secondary pollution.

关 键 词：VUV/O3法 酯-105废水 羟基自由基 

分 类 号：X751[环境科学与工程—环境工程]