摘要
分别采用加热和亚铁离子方式活化过硫酸钠(PS)产生硫酸根自由基的高级氧化技术处理造纸厂废水二级出水(COD为80mg/L),考察了p H值、温度、PS用量、催化剂投加量等因素对COD降解率的影响,初步确定了硫酸根自由基高级氧化降解造纸废水的工艺条件。结果表明:在酸性至中性条件下,两种体系产生的硫酸根自由基皆可降解有机污染物。热活化体系对COD的降解速率随着温度(室温~70℃)升高而升高,随PS用量(0.238g/L^0.952g/L)增加而增加;亚铁离子活化体系对COD的去除在PS投加量为0.476g/L,亚铁投加量为0.278g/L时有最佳效果。两种体系在造纸废水处理中都有应用前景,从经济角度上讲,亚铁离子活化过硫酸钠体系更有优势。
Advanced oxidation process this work to degrade pulping and pape based on thermally and Fe （ U ） activated sodium persulfate （PS）was used in rmaking wastewater（ COD of 80mg/L）. The effect of pH on the degradation efficiency of wastewater was investigated , also the effects of temperature, PS dosage and catalyst dosage were examined. The results showed that the two systems can degrade organic compounds in different pH conditions. The efficiencies of COD degradation in heat/PS system enhanced as the temperature and PS dosage increased. The Fe2＋/ PS system had the highest removal efficiency of COD under the optimum condition（ [ PS] 0 =0.476g/L, [ Fe2＋ ] 0 = 0. 278g/L）. It was proved that both of the two systems had perspective for treatment of papermaking wastewater, but Fe（ Ⅱ ） activated persulfate had more advantages.
出处
《造纸科学与技术》
北大核心
2014年第5期96-99,共4页
Paper Science & Technology
基金
广东省战略新兴攻关项目(2012A032300015)
关键词
高级氧化
造纸废水
硫酸根自由基
催化
深度处理
advanced oxidation process
papermaking wastewater
sulfate radical
catalysis
deeply treatment
