化学混凝对两级曝气生物滤池出水的除磷效果研究李伟伟

李伟伟1,　高宝玉1,　许春华1,　卢　佳2,　邱继彩1,　岳钦艳1(1.山东大学环境科学与工程学院,山东济南250100;2.清华大学环境科学与工程系,北京100084)　　　:　为解决两级曝气生物滤池处理城市污水时除磷效果欠佳的问题,采用化学混凝工艺对其出水进行处理,以聚合硫酸铁(PFS)为絮凝剂,通过烧杯试验考察了PFS投量及助凝剂聚丙烯酰胺(PAM)对除磷效果的影响,并通过中试考察了混凝、沉淀、过滤工艺的除磷效果。结果表明,PAM的助凝作用并不明显,单独投加130mg/L的PFS即可使出水TP1mg/L。在生物处理单元稳定运行的情况下,中试工艺的PFS投量在90～95mg/L时可使出水TP1mg/L,总铁0.5mg/L。　　:　化学除磷;　混凝;　PFS;　PAM;　中试;　快滤池:X703　　:C　　:1000-4602(2007)05-0054-05StudyonChemicalCoagulationProcessforPhosphorusRemovalfromEffluentofTwo-stageBiologicalAeratedFilterLIWei-wei1,　GAOBao-yu1,　XUChun-hua1,　LUJia2,　QIUJi-cai1,　YUEQin-yan1(1.SchoolofEnvironmentalScienceandEngineering,ShandongUniversity,Jinan250100,China;2.DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China)　　Abstract:　Tosolvelowphosphorusremovalefficiencyoftwo-stagebiologicalaeratedfilterintrea-tingmunicipalwastewater,thechemicalcoagulationprocesswasusedtotreatitseffluen.tPolyferricsul-fate(PFS)andpolyacrylamide(PAM)werechosenascoagulantandcoagulantaidrespectivelyinjartests,andtheeffectsofdosagesofPFSandPAMonchemicalphosphorusremovalwerestudied.Thephosphorusremovalefficienciesofcoagulation,sedimentationandfiltrationprocesseswereinvestigatedthroughpilot-scaletes.tTheresultsshowthatdosingPAMcannotimprovecoagulationefficiencyofPFS;theeffluentTPislessthan1mg/LwhenusingPFSof130mg/Laloneinjartests.Undertheconditionofstableoperationofthebiologicaltreatmentunit,theeffluentTPandtotalironarelessthan1mg/Land0.5mg/LrespectivelywhenthedosageofPFSis90-95mg/Linthepilot-scaletes.t　　Keywords:　chemicalphosphorusremoval;　coagulation;　PFS;　PAM;　pilot-scaletest;　rapidfilter　　:(863)(2003AA601080)　　(BAF),,BAF,(PFS)、、,。54第23卷　第5期2007年3月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vo.l23No.5Mar.20071　试验部分1.1　1.1.1　ZR4-6;WFZ756/;YXQG02。PFS(Fe3+≥22%);PAM(90%～95%);(NH4)6Mo7O244H2O(AR);K(SbO)C4H4O61/2H2O(AR);(AR)。1.1.2　(200r/min)500mLPFS(PFS),1min,(60r/min)10min,10min,TP、、。TP;;[1]。1.2　1.2.1　,1m3/h,1。1　Fig.1　Schematicdiagramofchemicalcoagulationprocessinphosphorusremoval,6kPa;,4mm,1.8m×0.4m×0.95m,45min;,400mm,3.1m,0.3m、1.5m、0.8m、0.5m;,0.5～1.0mm。1.2.2　,,TP1.51～12.7mg/L,/TP0.60～0.76,,。2　结果与讨论2.1　2.1.1　PFS:9.81mg/L,TP10.46mg/L,45,4.54NTU。PFS2。2　PFSFig.2　EffectofdifferentdosagesofPFSonphosphorusremoval2,,PFS:130mg/LTP90%,TP1mg/L,《》(GB/T19923—2005)。2,,TPPFS,PFS≥120mg/L,。,,,,,TP[2]。,PFS,(1)。1　PFSTab.1　EffectofPFSdosageoncolorandresidualironPFS/(mgL-1)120130140150160170/303020252525/(mgL-1)0.720.810.900.991.091.07　　,PFS,PFS130mg/L。1,130mg/LPFS,0.81mg/L,,,()。1,PFS,,30。55李伟伟,等:化学混凝对两级曝气生物滤池出水的除磷效果研究第23卷　第5期2.1.2　PFS(CPAM)、(APAM)(PAM)PFS。PFS140mg/L,CPAM、APAMPAMPFS3。3　PFSFig.3　EffectofcoagulantaidsonphosphorusremovalwithPFS3,CPAMAPAM,TP。PAM。,,[3、4]。CPAMPFS,CPAMPO3-4FePO4;,CPAMPO3-4,。,CPAM,PFS。APAMPFS,APAM,PO3-4,APAMFePO4。,APAMPFS。PAMPFSAPAM、CPAM。PAM≤1mg/L,PAM,PAM,PAM;PAM1mg/L,,1.2mg/L,PFS,PAM。,1.2mg/LPAM,。PFS,PAM。2.2　2.2.1　,,,TP3～4mg/L,/TP0.6～0.7,,PFS90～95mg/L,。4TP,()TP,3.86mg/L,PFS93mg/L。4　PFS93mg/LFig.4　ContinuousoperationwithPFSdosageof93mg/L4,2h,TP1mg/L,,TP,TP0.5mg/L;,,0.5mg/L56第23卷　第5期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　(,0.5mg/L,0.3mg/L)。,TP()(),90～95mg/LPFSTP。TP7.42mg/L、95mg/LPFS,TP1mg/L,PFS,TP,,、,/TP,,,(0.05～0.2mg/L)95mg/LPFS。,,,,TP,[5]。,TP,150mg/LPFSTP,2,PFS,,,。2　PFS150mg/LTab.2　ContinuousoperationwithPFSdosageof150mg/L/h1245678TP/(mgL-1)1.020.870.770.400.540.220.31/(mgL-1)0.310.460.530.590.640.740.77　　,,TPPFS,,,TP,。PO3-4-P。,,,。,。PFS,(Fe2+/≈0.1),。,0.56mg/L0.19mg/L,66%。、,,。2.2.2　,12～14h,PFS100mg/L,,8～10h。8min,8m3/h。3%～5%(100m33～5m3),,。1.5h1min,。,98%,,,,、、。2.2.3　,、、、,。PFS1600/t,95mg/L,0.152/m3;0.025kW,0.579/(kWh),0.014/m3。0.166/m3,,,0.25～0.30/m3,(+++)35%。。3　结论①　(下转第61页)57李伟伟,等:化学混凝对两级曝气生物滤池出水的除磷效果研究第23卷　第5期SO2-4,SRB,MPB。SO2-442.6%～90.7%,73.26%。④　(9.5～12℃),AHRCOD36.13%,UASB,AHRCOD。:[1]　SeghezzoL,ZeemanG,JulesBvanLier,etal.Areview:theanaerobictreatmentofsewageinUASBandEGSBre-actors[J].BioresourTechnol,1998,65(3):175-190.[2]　LettingaG,RebacS,ZeemanG.Challengeofpsychroph-ilicanaerobicwastewatertreatment[J].TrendsBiotechn-ol,2001,19(9):363-370.[3]　KalkerTJJ,MassJAW,ZwaagRR.Transferandac-ceptanceofUASBtechnologyfordomesticwastewater:Twocasestudies[J].WaterSciTechnol,1999,39(5):219-225.[4]MironY,ZeemanG,vanLier,etal.Theroleofsludgeresidencetimeinthehydrolysisoflipids,carbohydratesandproteinsduringtheanaerobictreatmentofdomesticsewage[J].WaterRes,2000,34(4):1705-1713.[5]　ZeemanG,LettingaG.Theroleofanaerobicdigestionofdomesticsewageinclosingthewaterandnutrientcycleatcommunitylevel[J].WaterSciTechnol,1999,39(5):187-194.[6]　ElmitwalliTA,SklyarV,ZeemanG,etal.Lowtempera-turepre-treatmentofdomesticsewageinananaerobichy-bridorananaerobicfilterreactor[J].BioresourTechnol,2002,82(3):233-239.[7]　SollfrankU,KappelerJ,GujerW.Temperatureeffectsonwastewatercharacterizationandthereleaseofsolubleinertorganicmaterial[J].WaterSciTechnol,1992,25(6):33-41.[8]　NachaiyasitS,StucheyDC.Effectoflowtemperaturesontheperformanceofananaerobicbaffledreactor(ABR)[J].JChemTechnolBiotechnol,1997,69(2):