臭氧-非均相Fenton工艺在焦化废水处理中的应用研究  

Study on Ozone combined with Heterogeneous Fenton process in coking wastewater treatment

作　　者：王冰冰 WANG Bingbing(HaFu Environmental Technology(Shanghai)Co.,Ltd.,Shanghai 201707,China)

机构地区：[1]哈富环境科技(上海)有限公司,上海201707

出　　处：《水资源开发与管理》2022年第1期40-45,共6页Water Resources Development and Management

摘　　要：通过对江苏沙钢集团厂区现有的焦化废水处理工艺进行深入的调研后,合理优化现有处理单元,采用增加前处理以及末端深度处理环节的方式,达到提高污染去除效率的目的。通过现场中试实验,获取改良工艺对焦化废水去除效果的最优工况参数。中试实验的工艺路线为“破乳→隔油→臭氧催化Fenton→气浮→EGSB→BACT→臭氧催化Fenton→气浮”,在前处理段臭氧浓度设置为100mg/L、深度处理单元臭氧浓度设置为50mg/L、BACT段分流比为1∶1、污泥回流比为1∶1时,工艺运行稳定后,在COD进水浓度为4100~5600mg/L时,系统对COD去除率可稳定达到95%以上,在氨氮进水浓度为250~310mg/L时,系统对氨氮去除率可稳定达到91%以上。After in-depth investigation of the existing coking wastewater treatment process in Jiangsu Shagang Group,the existing treatment units are reasonably optimized,and the pre-treatment and terminal advanced treatment links are added to achieve the goal of improving the pollution removal efficiency.Through the field pilot test,the optimal operating parameters of the improved process for coking wastewater removal were obtained.The process route of pilot test experiment is“demulsification-oil separation-ozone-catalyzed Fenton-air flotation-EGSB-BACT-ozone-catalyzed Fenton-air flotation”.When the ozone concentration in the pre-treatment section is 100mg/L,the ozone concentration in the advanced treatment unit is 50mg/L,the split ratio in the BACT section is 1∶1,and the sludge reflux ratio is 1∶1,After the process runs stably,the removal rate of COD by the system can reach more than 95%stably when the influent concentration of COD is 4100~5600mg/L,and the removal rate of ammonia nitrogen by the system can reach more than 91%stably when the influent concentration of ammonia nitrogen is 250~310mg/L.

关 键 词：焦化废水 臭氧催化 非均相FENTON 

分 类 号：TV213.4[水利工程—水文学及水资源]