磁絮凝强化污水处理的试验研究陈瑜

100124COD、、TP、。、、、。COD、、TP61．30%、98．90%、98．13%18．58%。。X703C1000－4602201117－0078－04StudyonEnhancedTreatmentofSewagewithMagneticFlocculationTechnologyCHENYuLIJunCHENXu-luanHUJia-weiKeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineeringBeijingUniversityofTechnologyBeijing100124ChinaAbstractTakingtheremovalratesofCODturbidityTPandammonianitrogenasstudyinde-xesmunicipalsewagewastestedbymagneticflocculationtechnology．Theoptimumtypeofcoagulantwasdeterminedandtheinfluenceofdifferentfactorssuchascoagulantdosagemagneticpowderdosagestirringconditionsdosingsequenceofchemicalwasstudied．Theresultindicatesthattheeffectofmag-neticflocculationtechnologyisbetterthanthatofconventionalcoagulationprocesswiththeadditionofmagneticparticletheremovalrateofTPisimprovedandtheremovalratesofCODturbidityTPandammonianitrogenare61．30%98．90%98．13%and18．58%respectively．Themagneticflocculationtechnologycanshortentheperiodofcoagulationandsedimentationreducetheflocvolumeandachievethemagneticsolid-liquidseparationeasily．Keywordsmunicipalsewagemagneticflocculationenhancedtreatment2008ZX07314－008、2008ZX07314－009。、、、、、。·87·271720119CHINAWATER＆WASTEWATERVol．27No．17Sep．20111。、、、、、23。。11.18～10℃、pH7～8、COD370～400mg/L、260～300NTU、TP9．5～10．0mg/L、90～100mg/L。Fe3O474μm90%、、、PACAl2O330%、PAM14×106u。1.2。6500mL1L300r/min2min70r/min10min20min2cmCOD、、TP、、pH。。、PAMPAM100s、。1.3pHpHCODCODTurb350IRTP。22.1。3、PAC、COD、、TP、。3CODPAC。CODPAC、＞200mg/LCOD。3COD。COD。3PAC。PAC＞200mg/L。。3TPPAC。。＞200mg/L。3。PAC。PAC250mg/L22．45%79．4mg/L。。PACpH。2.2PAM300mg/L。100sPAM。200mg/LPAM0～2．5mg/LFeCl3PAM。PAM。·97·．watergasheat．com2717PAM。PAMCOD41．73%58．79%79．75%95．83%13．12NTU20%TP98．2%TP0．27mg/L《》GB18918—2002A。PAM2．5mg/LPAM2．5mg/L。2.3、PAMPAM、、“”。0～500mg/L200mg/LPAM2．0mg/LPAM。。。“”4。200mg/LCOD44．87%53．34%91．32%96．22%11．83NTU16．78%TP0．22mg/L。＞200mg/LCOD、、。“”。200mg/L。。。。2.4200mg/L200mg/LPAM2．0mg/LPAM。4①300r/min2min70r/min5min②300r/min2min70r/min7min③300r/min2min70r/min10min④400r/min2min70r/min10min1。1Tab．1MagneticflocculationefficiencyunderdifferentmixingconditionsCODTP/mg·L－1/%/NTU/%/mg·L－1/%/mg·L－1/%①189．645．8618．9891．060．6692．9088．6010．87②170．551．306．3997．070．5393．2384．7114．77③173．150．5712．6894．030．5594．0985．1114．39④166．152．5712．9693．880．5094．6284．3215．171400300r/min。。5min、。300r/min2min70r/min7min。2.5200mg/L200mg/LPAM2．0mg/L300·08·2717．watergasheat．comr/min2min70r/min7min。3①PAM②PAM③PAM2。2Tab．2MagneticflocculationefficiencywithdifferentchemicaldosingsequenceCODTP/mg·L－1/%/NTU/%/mg·L－1/%/mg·L－1/%①171．551．036．9397．070．6393．2385．7113．78②152．056．6017．891．620．8191．3088．6110．86③132．462．203．1698．510．2996．8881．6117．912COD10%。、。PAM。PAM。2.6TP5。300mg/L、70mg/LTP48．02%10%。。。PAM“”。2.7200mg/L180～300mg/LPAM2．0mg/L300r/min2min70r/min7minPAM。300mg/L。COD126．3mg/LCOD61．30%2．34NTU98．90%TP0．18mg/LTP98．13%20%。。3①。②、。③COD47．94%61．30%78．38%98．90%TP98．13%20%。。1．J．20071312－15．2．J．200221379－82．3YingTYYiacoumiSTsourisC．High-gradientmagneti-callyseededfiltrationJ．ChemEngSc[e-mail]2011－03－15·18·．watergasheat．com2717