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组合工艺处理医院生活污水的对比研究曹井国1,王晶2,3,宁立群4,刘肖4,李萌4,杨宗政1,于俊利5(1.天津科技大学化工与材料学院,天津300457;2.北京市自来水集团有限责任公司技术研究院,北京100012;3.北京市供水水质工程技术研究中心,北京100012;4.天津科技大学海洋与环境学院,天津300457;5.天津中天海盛环保科技有限公司,天津300384)[摘要]分别采用接触氧化组合工艺和MBR组合工艺处理医院生活污水,对处理效果及运行费用进行了对比。结果表明:接触氧化组合工艺处理效果受填料比影响较大,当填料比为20%时,对COD、氨氮、浊度的去除率最高分别为88%、88%、96%;处理同样医院废水的情况下,MBR组合工艺对COD、氨氮、浊度的去除率最高分别为75%、79%、98%,由于截留能力的差异,MBR出水中的微生物含量显著低于接触氧化出水,在满足排放标准情况下,MBR组合工艺的消毒剂用量相对较低;经济分析表明,同等规模的组合工艺,两者的总投资相差不大,MBR组合工艺的运行费用略高。[关键词]接触氧化;膜生物反应器;组合工艺;医院废水[中图分类号]X703[文献标识码]A[文章编号]1005-829X(2016)05-0036-04ComparativestudyonhospitaIdomesticsewagetreatedbycombinedprocessCaoJingguo1,WengJing2,3,NingLiqun4,LiuXiao4,LiMeng4,YangZongzheng1,YuJunli5(1.SchoolofChemicalEngineeringandMaterial,TianjinUniversityofScienceandTechnology,Tianjin300457,China;2.InstunituteofTechnologyofBeijingWaterworksGroupCo.,Ltd.,Beijing,100012,China;3.BeijingEngineeringResearchCenterforDrinkingWaterQuality,Beijing,100012,China;4.CollegeofMarineandEnvironmentalSciences,TianjinUniversityofScienceandTechnology,Tianjin300457,China;5.TianjinZhongtianHaishengEnvironmentalProtectionScienceandTechnologyCo.,Ltd.,Tianjin300384,China)Abstract:Biologicalcontactoxidationhybridprocess(BCOH)andmembranebiologicalreactorhybridprocess(MBRH)havebeenusedfortreatinghospitalsewage,respectively,andthetreatmenteffectsandoperationcostscompared.Theresultsshowthatthetreatmenteffectofcontactoxidationhybridprocessisinfluencedbypackingratiomoregreatly.Whenthepackingratioisabout20%,thehighestremovingratesofCOD,NH3-Nandturbiditycouldachieve88%,88%and96%,respectively.Whenthehospitalsewageistreatedundersimilarconditions,thehighestremovingratesofCOD,NH3-NandturbiditybyMBRhybridprocessare75%,79%,98%,respectively.Becauseofthedifferenceofinterceptionabilities,themicrobialcontentinMBReffluentisobviouslylowerthanthatincontactoxidationeffluent.Undertheconditionsofmeetingthedischargestandard,thedosageofdisinfectantforMBRhybridprocessisrelativelylower.Theeconomicanalysisshowsthatwhenthescalesofhybridprocessesareequal
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