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A_O交替运行钢渣基复合滤料生物滤池处理模拟生活污水脱氮除磷特性

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  • 2020-04-09 17:19:27

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中国环境科学2015,35(6):1756-1762ChinaEnvironmentalScienceA/O交替运行钢渣基复合滤料生物滤池处理模拟生活污水脱氮除磷特性刘志,邱立平,王嘉斌,一,张守彬,谢康(1脐南大学土木建筑学院山东济南250022:2.北京工业大学建筑工程学院,北京100022)摘要:利用两级钢渣基复合滤料生物滤池(SSMBF)构建厌氧/好氧(A/O)交替运行工艺系统.在单池HRT=2h,A/O交替周期48h,厌氧DO=0.2.5mg/L.好氧DO=3~5mg/L,T-23~27℃的运行条件下,考察了SSMBF系统对模拟生活污水(pH=6.8~7.5,COD=260-330mg/L,NH4+-N=35.,-40mg/L,PO43-P=9~l1mg,L)的处理效果,分析了其氨氮和磷去除特性.结果表明,两级A/O交替SSMBF系统具有良好的生活污水处理能力,对氨氮、磷和COD的去除率分别为95%、40%-60%和83.3%,出水氨氮、磷和COD浓度分别为O.5mg/L、3-6mg/L和50mg/L.在厌氧/好氧交替周期为48h的工况下,SSMBF系统的氨氧化菌和聚磷菌分别可在10h和8h恢复最佳活性.SEM,EDS表征和污染物去除特性分析结果显示,MO交替运行SSMBF系统充分发挥了钢渣基复合滤料的离子和碱度释放特性,通过聚磷菌的厌氧释磷效应,在厌氧SSMBF中诱导促进了生物一结晶协同除磷,结晶产物为以羟基磷灰石为主的磷酸盐化合物.关键字:生物滤池:钢渣基复合滤料;A/O交替;结晶文献标识码:A中图分类号:X703文章编号:1000—6923(2015)06—175607CharacteristicsofnitrogenandphosphorusremovalfromartificiallysynthesizeddomesticwastewaterinanalternatingA/Obiologicalfilterwithsteelslagmedia.LIUZhi,QIULi.ping,WANGJia-bin,ZHANGShou_bin,XIEKang(1.SchoolofCivilEngineeringandArchitecture,UniversityofJinan,Jinan250022,China;2.CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100022,China),ChinaEnvironmentalScience,2015,35(6):1756~1762Abstract:Underhydraulicretentiontime(HRT)of2h,A/Oalternatingintervalof48h,temperatureof23~27~C,dissolvedoxygenconcentration(DO)ofO.2-0.5megLinanaerobicstageand3-Smg/Linaerobicstage,twosteelslagmediabiologicalfilters(SSMBFs)werecarriedoutandoperatedinalternatinganaerobic/aerobic(A/O)modetoinvestigatecharacteristicsofnitrogenandphosphorusremovalfromartificiallysynthesizeddomesticwastewaterwithinfluentqualityofpH6.8-7.5,COD260~330mg/L,NH4十_N35~40mg/LandPO4-p9-llmg/L.TheresultsshowedthatthealternatingA/O-SSMBFsperformedapromisingperformanceforwastewatertreatment,aswellast}leNH4N,P04j_一PandCODcouldberemovedmorethan95%,40%~60%and83-3%respectively,andtheefiuentconcentrationsofNH4+-N,P04~-pandCODdecreasedtoO.5mg/L.3-6mg/Land50mg/Lrespectively.Itwasalsoobservedthatthebiologicalactivityofammoniaoxidizingbacteria(AOB)andphosphorusaccumulatingbacteria(PAOs)couldberecoveredin10hoursa

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