超声内电解处理高浓度含盐有机废水的实验研究_叶强

超声内电解处理高浓度含盐有机废水的实验研究叶强1a,李正山1a,徐明杰2,黄丽1b,马留贵2(1.四川大学a.建筑与环境学院;b.轻纺与食品学院,四川成都610065;2.成都益荣环保有限公司,四川成都610502)摘要:分别研究了铁碳内电解、超声波辐照以及不同组合方式对高盐度泡菜废水的处理,重点研究了铁碳比、铁碳加入量、溶液pH值、处理时间、超声功率密度等因素对高含盐量泡菜废水降解率的影响。实验表明,铁碳加入对内电解处理效果影响显著,超声波处理该废水的最佳pH值为7;超声内电解处理的最佳条件为:铁碳比2∶1,铁碳加入体积为溶液体积的25%,溶液初始pH值为7,超声功率密度为0.225w/cm3,曝气处理90min。处理后出水COD去除率大于50%,达到了对该类高浓度含盐废水的预处理效果,降低了后续生化系统的处理负荷。关键词:超声内电解;高浓度;含盐有机废水中图分类号:X703.1文献标志码:A文章编号:1005-8141(2009)12-1060-04TreatmentofHypersalineOrganicWastewaterwithInteriorMicro-electrolysisIntensifiedbyUltrasonicIrridationYEQiang1a,LIZheng-shan1a,XUMing-jie2,HUANGLi1b,MALiu-gui2(1.SichuanUniversitya.CollegeofEnvironmentalEngineering;b.CollegeofLightIndustryandTextileandFoodEngineering,Chengdu610065,China;2.ChengduYirongEnvironmentalProtectionCo.Ltd,Chengdu610502,China)Abstract:Thispaperwasaboutthetreatmentofhypersalinesauerkrautwastewaterwithprocessesincludingiron-carboninteriormicroelec-trolysis,ultrasonicirridationandtheseveralcombinations.Itfocusedontheinvestigationofdegradationrateinfluencedbythesefactorslikeironcar-bonritio,thetotalamountsofironandcarbon,theincipientpHvalueoftheaqueoussolution,treatingduration,andpowerdensityofthesupersonicwave.Theexperimentindicatedthatthetotalamountsofironandcarbonsignificantlyaffectedtheinteriormicro-electrolysistreatment,andtheopti-mapHvalueforultrasonictreatmentofthiswastewaterwas7.Theoptimaconditionwasthattheironandcarbonratiokeeps2∶1,thetotaladditionamountsto25%ofthesolution'wholevolume,theincipientpHvaluewas7,andthepowerdensityoftheultrasonicwavewas0.225w/cm3,andthewholesystemranfor90minutes.Afterthesewholetreatment,thechemicaloxygendemand(COD)ofthewastewaterwasreducedbymorethan50%,whichachievedgoodpre-treatmentefficiencytothishyper-concentrationbrinewastewater,andreducedthetreatingloadofthefollowingbiologicaltreatment.Keywords:ultrasonicinternalelectrolysis;hyper-concentration;brineorganicwastewater收稿日期:2009-10-22;修订日期:2009-11-19第一作者简介:叶强(1986-),男,四川省绵阳人,硕士研究生,研究方向为水污染控制。对高浓度高含盐有机废水的处理,若不以浓缩分离盐类为目的,则生物法具有技术上和经济上