零价铁活化过硫酸盐处理渗滤液生化尾水  

Treatment of Biochemical Effluent of Landfill Leachate by Fe^0 Catalyzed Persulfate Oxidation

作　　者：刘占孟[1] 占鹏[1,2] 李静[3] 聂发辉[1] 王中彦 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]江西省灌溉排水发展中心,江西南昌330013 [3]邢台职业技术学院建筑工程系,河北邢台054035 [4]天津星城投资发展有限公司,天津300350

出　　处：《中国给水排水》2016年第9期112-115,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51468016);国家科技支撑计划项目(2014BAC04B03);江西省自然科学基金资助项目(20142BAB203027);江西省科技支撑计划项目(20151BBG70020);河北省科技支撑计划项目(15273628)

摘　　要：采用零价铁催化过硫酸盐处理垃圾渗滤液生化尾水,考察了pH值、过硫酸盐和零价铁的投加量、反应时间等因素对处理效果的影响。结果表明,该方法能有效去除渗滤液生化尾水中的污染物,在废水pH值为3、零价铁投加量为0.5 g/L、过硫酸钠投加量为2.5 g/L的最佳条件下,反应12 h后对COD和色度的去除率分别高达71%和90%。对比不同过硫酸盐氧化体系的试验结果,发现过硫酸钠对垃圾渗滤液的处理效果优于过硫酸钾。红外光谱分析结果表明,水样中的大分子有机物被硫酸根自由基氧化成了小分子有机物。The Fe^0 catalyzed persulfate oxidation system was used to treat biochemical effluent of landfill leaehate, and the effects of some factors such as pH, dosages of persulfate and Fe^0 as well as reaction time on the treatment efficiency were investigated. The results showed that this system could efficiently remove pollutants in the biochemical effluent of landfill leachate. Under the optimum conditions of pH of 3, Fe^0 dosage of O. 5 g/L and sodium persulfate dosage of 2.5 g/L, the removal rates of COD and color were up to 71% and 90% respectively after reaction for 12 h. Comparing the different results of persulfate oxidation system, it was found that the treatment efficiency of landfill leachate by sodium persulfate was higher than that by potassium persulfate. The infrared spectrum analysis results indicated that the maeromolecular organic matter in water samples was oxidized into micromolecular organic matter by sulfate radical.

关 键 词：垃圾渗滤液 高级氧化 过硫酸盐 零价铁 

分 类 号：X703[环境科学与工程—环境工程]