磁絮凝分离生物滤池组合工艺处理生活污水的效能李洋

/11121121．1500902．150090/、、DO、OＲPCOD、NH+4－N。1．0mL/L、1mg/LPAM、300mg/LFe3O4COD55%0．5mg/L。1．5～5．0m3/m2·dCOD、NH+4－N70%COD。X703A1000－4602201415－0029－062012ZX07201－003－002TreatmentofDomesticSewagebyCombinedProcessofMagneticFlocculationSeparationandTricklingFilterLIYang1WEILiang-liang1ZHAOQing-liang12XINMing1WANGKun121．SchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150090China2．StateKeyLaboratoryofUrbanWaterＲesourceandEnvironmentHarbinInstituteofTechnologyHarbin150090ChinaAbstractInordertoachievehigh-efficiencysewagetreatmentandreducetheenergyconsumptionforaerationacombinedprocessofmagneticflocculationseparationandtricklingfilterfilledwithvolcanicrockandslagwasconstructed．Theoptimaldosagesofcoagulantandmagneticseedinthemagneticfloc-culationseparationunitweredeterminedandtheeffectsofthedistributioncharacteristicsofDOandOＲPinthetricklingfilteroperatedatdifferenthydraulicloadingratesonremovalofCODandNH+4－Nwereanalyzedtoinvestigatethetreatmentefficiencyofdomesticsewagebythecombinedprocesswiththeoptimizedoperationparameters．When1．0mL/Loffly-ashbasedcoagulant1mg/LofPAMand300mg/LofmagneticseedFe3O4weredosedCODremovalrateofmorethan55%couldbeachievedinthemagneticflocculationseparationunitwiththeeffluentTPoflessthan0．5mg/L．Afterthesubsequenttreatmentwithtricklingfilteratahydraulicloadingrateof1．5to5．0m3/m2·dtheremovalratesofCODandNH+4－Nweremorethan70%．ThecombinedsystemcouldeffectivelyremoveCODnitrogenandphosphorussynchronously．·92·301520148CHINAWATEＲ＆WASTEWATEＲVol．30No．15Aug．2014Keywordsdomesticsewagemagneticflocculationseparationtricklingfilteroperationef-ficiencynitrogenandphosphorusremoval。SBＲ、CAST、A2/O1～3、。、、、。。、。、4、。5－、。/、。11.1/1。1/Fig．1Flowchartofcombinedprocessofmagneticflocculationseparationandtricklingfilter。12L10min。。180cm9cm60cm5cm。30cm。160%。Fe3O4PAM。6、1～2cm6～13cm2/g34%53%1．07g/cm31．25g/cm3。COD、SS、NH+4－N、TN、TP200～380、160～220、30～40、40～50、3～7mg/LDO0．4～0．9mg/LpH6．4～7．610～18℃。7。1.281∶3805℃1h。2mol/L1∶31g∶3mL30min。10500mL0．1、0．2、0．3、0．4、0．5、0．6、0．7、0．8、0．9、1．0mL3min300r/min10min60r/min20min2cmCODTP。1.3。500mL300r/min·03·3015．watergasheat．com1．0mL/L2minpH7．00、50、150、250mgPAM3min。40．5mgPAM。8。1.46L/d10L/d6COD、NH+4－NDO。NH+4－NCOD70%。10d1．5、3．0、4．0、5．0m3/m2·dOＲPCOD、NH+4－N。COD、NH+4－N1．5m3/m2·d30、60、90、120、150、180cmCODNH+4－N。1.5COD、NH+4－NTPDOOＲP。22.12.1.1CODTP2。1．0mL/LCODTP55%80%。Fe3+Al3+Fe3+Al3+。＞1．0mL/LCODTP。TPFePO4FePO4。1．0mL/L。2COD、TPFig．2ＲemovalefficiencyofCODandTPunderdifferentdosagesoffly-ashbasedcoagulant2.1.2PAMPAM3。3PAMFig．3VariationofsludgesettlingrateunderdifferentdosagesofmagneticseedandPAMPAM1mg/LTP100mg/L86%＜500mg/L89%＜300mg/L94%＞300mg/LTPTPFePO49。3PAM·13·．watergasheat．com/301510。300mg/LPAM1mg/L。2.22.2.1DO1．5m3/m2·dDO4。DO0．4～0．9mg/LDO2．3mg/LDO、120cmDO。4DO15℃Fig．4Dissolvedoxygendistributionalongheightoftricklingfilter15℃DO、。15℃22℃。150cmDO。DO。DO。DODO0．5mg/LDO＞0．5mg/L。2.2.2OＲPOＲP5。1．5、3．0、4．0、5．0m3/m2·dOＲP90、60、0、0cmOＲP。OＲPCODOＲP11。1．5m3/m2·dDOOＲPDOOＲP。OＲP。DOOＲP。DOOＲP。5OＲPOＲP4．0、5．0m3/m2·d。OＲPOＲP。5OＲPFig．5VariationofOＲPalongheightofTFunderdifferenthydraulicloadingrates2.2.3CODNH+4－NCOD6。1．53．0m3/m2·dCOD80%85%。COD①·23·3015．watergasheat．com②DO。4．05．0m3/m2·d。6CODNH+4－NFig．6ＲemovalofCODandNH+4－NalongheightofTFunderdifferenthydraulicloadingratesNH+4－N。NH+4－N。。6bNH+4－N。NH+4－N70%3．0m3/m2·d。2.3COD、NH+4－NTP370、40、7mg/L170、37、0．5mg/L。1．5m3/m2·dCOD150cmCOD75%COD40mg/L7。DO30～90cmCOD。71．5m3/m2·dFig．7Ｒemovalofpollutantsunderahydraulicloadingrateof1．5m3/m2·dNH+4－N10mg/L。15mg/L。DO、NH+4－N、12。NH+4－N85%NH+4－NA。120cm150cm10mg/LNH+4－N·33·．watergasheat．com/30154．5mg/L。Ｒahimi13。TP0．5mg/L0．45mg/LTP。3①、PAM、Fe3O41．0mL/L、1mg/L、300mg/LCOD、NH+4－NTP370、40、7mg/L170、37、0．5mg/L。②/1．5m3/m2·d、160%COD、NH+4－N、TP90%、87%、95%COD、NH+4－NTP40、4．5、0．45mg/LGB18918—2002A。③TP、CODNH+4－N。1．J．200834825－26．2．J．201012533－35．3．J．200528179－81．4．J．20122821138－141．5．－J．200424227－29．6．D．2011．7．CEPT-TF-UFD．2013．8．J．200728112507－2514．9ZhaoYXiBLiYetal．Ｒemovalofphosphatefromwastewaterbyusingopengradientsuperconductingmag-neticseparationaspretreatmentforhighgradientsuper-conductingmagneticseparationJ．SepPurifTechnol201286255－261．10TauxeLSteindorfJLHarrisA．DepositionalremanentmagnetizationTowardanimprovedtheoreticalandex-perimentalfoundationJ．EarthPlanetSciLett20062443/4515－529．11ZhuHYanBXXuYYetal．ＲemovalofnitrogenandCODinhorizontalsubsurfaceflowconstructedwet-landsunderdifferentinfluentC/NratiosJ．EcolEng20146358－63．12AlmstrandＲLydmarkPSorenssonFetal．Nitrifica-tionpotentialandpopulationdynamicsofnitrifyingbac-terialbiofilmsinresponsetocontrolledshiftsofammoni-umconcentrationsinwastewatertricklingfiltersJ．BioresourTechnol2011102177685－7691．13ＲahimiYTorabianAMehrdadiNetal．Simultaneousnitrification-denitrificationandphosphorusremovalinafixedbedsequencingbatchreactorFBSBＲJ．JHazardMater20111852852－857．1990－。[e-mail]2014－03－20·43·3015．watergasheat．com