高级氧化工艺处理煤化工反渗透浓水的研究  

Study on advanced oxidation processes in the treatment of reverse osmosis concentrated water from coal chemical industry

作　　者：王靖宇 李书震 魏学勇 韦凤密 WANG Jing-yu;LI Shu-zhen;WEI Xue-yong;WEI Feng-mi(Beijing Cycle Columbus Environmental Science and Technology Co.,Ltd.,Beijing 100083,China;Handan Iron&Steel Group Co.,Ltd.,Handan 056013,China)

机构地区：[1]北京赛科康仑环保科技有限公司,北京100083 [2]河钢集团邯钢公司,河北邯郸056013

出　　处：《应用化工》2020年第2期368-371,共4页Applied Chemical Industry

基　　金：国家重点研发计划项目(2016YFB0600505);水体污染控制与治理专项(2017ZX07402001)。

摘　　要：对比分析了Fenton氧化、O3/H2O2氧化和电化学氧化对煤化工反渗透浓水的处理特性。结果表明,Fenton氧化最佳反应条件为:m(H2O2)∶m(COD)=1.5,n(Fe^2+)∶n(H2O2)=0.4,反应时间为60 min;O3/H2O2氧化最佳反应条件为:臭氧气体流量为200 mL/min,m(H2O2)∶m(COD)=2,反应时间为80 min;电化学氧化最佳反应条件为:电流强度1 A,反应时间60 min。在上述反应条件下,Fenton氧化、O3/H2O2氧化和电化学氧化对煤化工反渗透浓水的COD去除率分别为46.2%,63.5%和66.4%,并从处理效果、处理成本、投资、操作难易、有无二次污染等方面对这3种高级氧化技术进行比较,确定出O3/H2O2氧化为最适宜的工艺。Reverse osmosis concentrated water from coal chemical industry was treated using three advanced oxidation processes(Fenton,O3/H2O2,and electrochemical oxidation) under laboratory conditions.The optimized reaction conditions for the Fenton technique were as follows:m(H2O2)∶m(COD)=1.5,n(Fe^2+)∶n(H2O2)=0.4,the reaction time was 60 min.For the O3/H2O2 oxidation technique,the optimized reaction conditions were as follows:ozone gas flow rate was 200 mL/min,m(H2O2)∶m(COD)=2,the reaction time was 80 min.For the electrochemical oxidation technique,the optimized reaction conditions were as follows:current intensity was 1 A,the reaction time was 60 min.Under the optimized conditions,the highest removal rates for COD in the reverse osmosis concentrated water from coal chemical industry by the Fenton,O3/H2O2,and electrochemical oxidation were 46.2%,63.5% and 66.4%,respectively.O3/H2O2 oxidation was determined as the optimal process by comparing from the aspects of the treatment results,treatment costs,difficulty level of operation,with or without secondary pollution.

关 键 词：反渗透浓水 FENTON O3/H2O2 电化学氧化 

分 类 号：TQ085.4[化学工程] X703.1[环境科学与工程—环境工程]