29291_改性膨润土协同H2O2去除电镀废水次磷酸盐研究

第2期RemovalofHypophosphitefromElectroplatingWastewaterbyModifiedBentoniteinCombinationwithH2O2XUSongli渊ZhangzhoulongwenEnvironmentalMonitoringStation,Zhangzhou袁Fujian363005,China冤Abstract院Inthisstudy,thebentonitewasmodifiedbythesimulatingelectroplatingpicklingsolution.Aftermodification,theFe2+contentonthesurfaceofbentoniteincreased.ThehypophosphiteintheelectroplatingwastewaterofacertainenterprisewasoxidizedtophosphatebyH2O2mergedwithironion(synergisticFentonoxidation).Thephosphatewasadsorbedontothebentonitebycomplexationandprecipitation.Theexperimentalresultsshowthat:300mgmodifiedbentonite(300mg)and3.0%H2O2(10mL)synergisticoxidationremovephosphate(108.6mg/L)inelectroplatingwastewaterfor30min,theremovalratewas95.6%.Keywords:synergistic;modification;hypophosphite;electroplatingwastewater;bentonite改性膨润土协同H2O2去除电镀废水次磷酸盐研究徐松立渊漳州市龙文环境监测站袁福建漳州363005冤摘要院本研究通过模拟电镀酸洗溶液改性膨润土袁提高膨润土表面Fe2+含量袁然后通过H2O2协同类Fenton氧化作用将某企业电镀废水中的次磷酸盐氧化为磷酸盐袁再通过铁离子络合沉淀作用将磷酸盐吸附到膨润土上.实验结果表明院300mg改性膨润土+10mL3.0%H2O2协同氧化去除电镀废水中的磷