_MABR-絮凝联合工艺处理合成橡胶废水的探索
- 张立中
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2020-04-22 21:38:38
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MABR-絮凝联合工艺处理合成橡胶废水的探索胡亮1,2,3,4,赵德喜5,侯飞飞1,2,3,4,王琴1,2,3,4,李保安1,2,3,4,王世昌1,3,4(1.天津大学化工学院化学工程研究所,天津300072;2.化学工程联合国家重点实验室,天津300072;3.天津市膜科学与海水淡化重点实验室,天津300072;4.天津化学化工协同创新中心,天津300072;5.中海油(中国)有限公司天津分公司渤西作业公司,天津300452)[摘要]提出以膜曝气生物反应器(MABR)与絮凝联合工艺处理合成橡胶废水。在MABR工段,膜内曝气压力为0.08MPa、料液循环流速为0.04m/s时,COD、NH4+-N、色度的去除率分别达到78.7%、97.8%、24.1%。在一定范围内,增加膜内曝气压力及提高料液流速有利于MABR性能的提高。在絮凝工段,通过添加复合絮凝剂能进一步将COD降至45mg/L、色度降至47倍。MABR-絮凝联合工艺是一种可高效处理合成橡胶废水的新型工艺技术。[关键词]膜曝气生物反应器;絮凝;合成橡胶废水[中图分类号]X703.1[文献标识码]A[文章编号]1005-829X(2015)04-0060-05Investigationofthetreatmentofsyntheticrubberwastewaterbythecombinedprocess,MABR-flocculationHuLiang1,2,3,4,ZhaoDexi5,HouFeifei1,2,3,4,WangQin1,2,3,4,LiBaoan1,2,3,4,WangShichang1,3,4(1.ChemicalEngineeringResearchCenter,SchoolofChemicalEngineeringandTechnology,TianjinUniversity,Tianjin300072,China;2.StateKeyLaboratoryofChemicalEngineering,Tianjin300072,China;3.TianjinKeyLaboratoryofMembraneScienceandDesalinationTechnology,Tianjin300072,China;4.CollaborativeInnovationCenterofChemicalScienceandChemicalEngineering(Tianjin),Tianjin300072,China;5.BoxiOperatingCo.,TianjinBranchofCNOOC(China)Co.,Ltd.,Tianjin300452,China)Abstract:Thecombinedprocess,membrane-aeratedbiofilmreactor(MABR)-flocculation,forthetreatmentofsyn-theticrubberwastewaterhasbeenproposed.IntheMABRsection,whentheintra-membraneaerationpressureis0.08MPaandthefeedflowvelocity0.04m/s,theremovingefficienciesofCOD,ammonianitrogenandchromaare78.7%,97.8%and24.1%,respectively.Withinacertainrange,increasingtheintra-membraneaeratedpressureandimprovingthefeedflowvelocityareadvantageousfortheenhancementofMABRcapacity.Intheflocculationsec-tion,theCODandchromaarefurtherreducedto45mg/Land47times,respectivelybyaddingcompositeflocculant.Thecombinedprocess,MABR-flocculationisakindofnewtypeoftechnologywhichcanbeappliedtotheefficienttreatmentofsyntheticrubberwastewater.Keywords:membrane-aeratedbiofilmreactor;flocculation;syntheticrubberwastewater合成橡胶废水成分非常复杂,且难以生化降解,具有含盐量高、色度高等特点。目前处理此类废水的方法有活性污泥法、电解絮凝法、水解酸化-好氧生物法、膜生物反应器法等,这些
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