O_3、H_2O_2/O_3及UV/O_3在焦化废水深度处理中的应用  

Application of O_3,H_2O_2/O_3 and UV/O_3 in advanced treatment of coking wastewater

作　　者：刘金泉[1] 李天增[1] 王发珍[1] 胡晓辉[1] 陈伟山[1] 

机构地区：[1]北京桑德环保集团研发中心,北京101102

出　　处：《环境工程学报》2009年第3期501-505,共5页Chinese Journal of Environmental Engineering

摘　　要：采用O3、H2O2/O3和UV/O3等高级氧化技术(AOPs)对某焦化公司的生化出水进行深度处理,考察了O3与废水的接触时间、溶液pH、反应温度等因素对废水COD去除率的影响,确定出O3氧化反应的最佳工艺参数为:接触时间40 min,溶液pH8.5,反应温度25℃,此条件下废水COD及UV254的去除率最高可达47.14%和73.47%;H2O2/O3及UV/O3两种组合工艺对焦化废水COD及UV254的去除率均有一定程度的提高,但H2O2/O3系统的运行效果取决于H2O2的投加量。研究结论表明,单纯采用COD作为评价指标,并不能准确反映出O3系列AOPs对焦化废水中有机污染物的降解作用。Advanced treatment of coking wastewater were conducted using AOPs including O3, H2O2/O3 and UV/O3. The influences of contact time, pH of solution and reaction temperature on the removal effect of wastewater were investigated and the results showed that the removal rates of COD and UV254 could reach 47.14% and 73.47% when the three factors were 4O rain, 8.5 and 25 ℃ , respectively. The combined process of H2O2/O3 and UV/O3 could increase the removal efficiency of COD and UV254 of coking wastewater compared with O3 solely, while the operational efficiency of H2O2/O3 depends on the dosage of H2O2. It was also found that COD can not reflect exactly the degradation effect of organic pollutants in coking wastewater by these AOPs.

关 键 词：O3、H2O2/O3 UV/O3 焦化废水深度处理 

分 类 号：X703.1[环境科学与工程—环境工程]