粉末活性炭与聚合氯化铝污泥回流技术的研究李晓

1111221．1001242．150090PACPACl、UV254、。PACPACl57．7%UV25465．5%56．6%20%＞10%3NTU7%～10%50%UV2544%～10%UV25460%。TU991A1000－4602201121－0023－04StudyonSludgeReturnTechnologywithPowderedActivatedCarbonandPolyaluminumChlorideLIXiao1LIXing1YANGYan-ling1HANJin1SHAOSen-lin2LIGui-bai21．CollegeofArchitectureandCivilEngineeringBeijingUniversityofTechnologyBeijing100124China2．StateKeyLaboratoryofUrbanWaterResourceandEnvironmentHarbinInstituteofTechnologyHarbin150090ChinaAbstractDongjiangmicro-pollutedrawwaterwastreatedbythecombinedprocessofsludgere-turnwithpowderedactivatedcarbonPACandpolyaluminumchloridePAClandGAC-sandfiltra-tion．TheremovalefficiencyofturbidityUV254andammonianitrogenwasinvestigatedandtheremovalofthesepollutantsunderdifferentreturnratioswascompared．TheresultsshowthatwhenthemixedsludgewithPACandPAClisreturnedtheremovalratesofammonianitrogenandUV254aftersedimenta-tionareupto57．7%and65．5%respectivelybeing56．6%and20%morethantheconventionalprocess．Forturbidityremovaltheturbidityofsedimentationeffluentisabove3NTUwhenthereturnra-tioismorethan10%．Forammonianitrogenremovaltheremovalrateofammonianitrogenaftersedi-mentationisabout50%whenthereturnratioisbetween7%and10%．ForUV254removaltheremovalrateofUV254aftersedimentationisabout60%whenthereturnratioisbetween4%and10%．Keywordsmicro-pollutedrawwaterpowderedactivatedcarbonPACpolyaluminumchloridePAClmixedsludgereturnGAC-sandfilterreturnratio2009ZX07423－003·32·2721201111CHINAWATER＆WASTEWATERVol．27No．21Nov．20111。、。。、。PACPACl。。PAC10～20min。79%96%～98%2。PACl、、DOCUV254。、DOC、UV2543、PAC4。5。。PAC、PACl。11.1WS－HCGX12001。PACl15mg/L。800mL/h。450r/min300、250、250、150r/min。。1Fig．1Flowchartofexperimentprocess1.21。1Tab．1Rawwaterquality/℃/NTU/mg·L－1UV254/cm－1CODMn/mg·L－121～2532．3～48．40．85～0．980．024～0．0322～2．381.3HACH2100NUV254SO-LUTIONAFTX。22.11%～4%96%7%2．5%17%13．6%。2。。1%～4%4%96%＞7%17%8NTU82．4%。2Fig．2Comparisonofturbidityremovalunderdifferentrefluxratios·42·2721．watergasheat．com。1%～7%。17%3NTU。98%1NTU。。1%～4%。6。。≥4%。2.27%57．7%。。3。3Fig．3Comparisonofammonianitrogenremovalunderdifferentrefluxratios1%4%18．4%24．1%。PAC。7%4%33．6%0．7mg/L0．6mg/L。。。10%14%56．3%43．4%。。1%～4%60%。PAC。7%～14%20%～45%。PAC。7%、0．94mg/L0．60mg/L《》GB5749—2006。1%～4%。2.3＞1%UV2544%UV25465．5%20%4。4UV254Fig．4ComparisonofsedimentationtankeffluentUV254removalbetweensludgereturnandconventionalprocess5UV254。UV254。·52·．watergasheat．com27211%～4%46．4%65．5%。PACUV254。7%～17%UV254。UV254。5UV254Fig．5ComparisonofUV254removalunderdifferentrefluxratiosUV25417．3%～36．3%GAC。UV254。7UV254。3①7%～8%。②56．6%UV25420%。③＞10%＞3NTU。10%。④7%～10%56%。⑤4%～10%UV25460%。＜3%＞10%。1．J．200114346－48．2ChuWei．LeadmetalremovalbyrecycledalumsludgeJ．WaterRes199933133019－3025．3QiLuLiangHengWangYietal．Integrationofim-mersedmembraneultrafiltrationwiththereuseofPACandalumsludgeRPASprocessfordrinkingwatertreatmentJ．Desalination20092491440－444．4．PACJ．2009255524－527．5．J．200314238－39．6．J．2009294791－796．7．J．2010312318－323．1986－。[e-mail]2011－04－28·62·2721．watergasheat．com