低温胁迫下包埋厌氧氨氧化污泥颗粒的脱氮性能许祥祥

110168－UASBHＲT。50mg/LHＲT7h15%UASBNH+4－N、NO－2－N95%89%。30℃14℃NH+4－N95%70%NO－2－N89%63%。14℃11hNH+4－N、NO－2－N85%79%。－。－TU992．3A1673－9353201902－0014－05doi10．3969/j．issn．1673－9353．2019．02．00451108277Denitrificationperformanceofanaerobicammoniumoxidationsludgeparticlesencapsulatedbypolyvinylalcohol－alginategelunderlowtemperaturestressXuXiangxiangZhouPengWangGuojianSchoolofMunicipalandEnvironmentalEngineeringShenyangJianzhuUniversityShenyang110168ChinaAbstractInordertosolvetheissueofpoorlowtemperatureresistanceofanaerobicammoniaoxidizingbacteriaintheprocessofanaerobicammoniaoxidationANAMMOXthepolyvinylalcohol-sodiumalginatewasusedasembeddingmediumtoembedANAMMOXsludgegranules．TheeffectofHＲTontheremovalofammonianitrogenandnitritenitrogenbyUASBreactorduringdomesticationwasinvestigated．TheresultsshowedthatUASBreactorwith15%embeddedsludgehadstrongdenitrificationabilitywhentheinfluentammonianitrogenconcentrationwas50mg/LandHＲTwas7h．TheremovalratesofNH+4－NandNO－2－Nwere95%and89%respectively．Underthesameconditionstheremovalrateofammonianitrogenandnitritenitrogendecreasedfrom95%to70%andfrom89%to63%whenthewatertemperaturewassteppeddownfrom30℃to14℃．TheremovalefficiencyofNH+4－NandNO－2－Ncouldbeimprovedbyadjustinghydraulicresidencetimeto11hat14℃whichwere·41·13220194WATEＲTECHNOLOGYVol．13No．2Apr．2019about85%and79%respectively．ThedenitrificationperformanceofANAMMOXbacteriaunderlowtemperaturestresscouldbegreatlyimprovedbyembeddingitwithpolyvinylalcohol-sodiumalginate．Keywordslowtemperaturepolyvinylalcohol-sodiumalginateanaerobicammoniaoxidationANAMMOX、、1。32～37℃。UASB。25℃。20℃。15℃ANAMMOX。。。。、、。。Furukawa4．0kgN/m3·dBODSS2。PVA－SAB1614d、44．05%46．29%26．06%2。49d80．7%83．1%0．505kgN/m3·d3。Hsia－80%4。－UASBANAMMOX。11.1UASB1。1UASBFig．1DeviceofUASBanaerobicammoniumoxidationreactionUASB6．2L4．3L1．9L。6．5cm、1．5cm。15%。。pH6．7～7．20．5mg/L。1.21.2.130℃ANAMMOX。NH+4－NNO－2－N0．1470．201kg/m3·d93．37%82．56%。1.2.2SA。SACaCl2·51·20194132PVA。。－。8%PVA、0．15%、2%Fe、0．3%、4%0．5%。10%、4%。1.2.3NaNO2HＲT。NH4ClNaNO240～75mg/L2mol/LHCl2mol/LNaOHpH7．2。NaHCO31g/LKH2PO427．2mg/LMgSO4·7H2O200mg/LCaCl2300mg/L。IED-TA5g/LFeSO4·7H2O5g/LIIEDTA5g/LZnSO4·7H2O430mg/LNiCl2·6H2O190mg/LCOCl2240mg/LMnCl2·4H2O990mg/LCuSO4·5H2O250mg/LNa2SeO4·2H2O210mg/LNa2MoO4·2H2O220mg/LH3BO414mg/L。ⅠⅡ1mL/L。1.31.3.1①15%UASB50mg/L30℃10h20d。HＲT80%。②ANAMMOXHＲTUASB。5Ⅰ1～9d30℃Ⅱ10～19d25℃Ⅲ20～34d20℃IV35～46d15℃V47～60d14℃。1.3.2NH+4－NNO－3－NNO－2－NN－1－－MLVSS－MLSSpHpH0．1℃5。22.12.1.1NH+4－N、HＲT。NH+4－N2。2HＲTFig．2EffectofHＲTontheremovalofammonianitrogenbyembeddedbacteria30℃、50mg/L、HＲT10hNH+4－N97%。HＲT98hNH+4－N2mg/L97．15%96．17%。HＲT7hNH+4－N95%。NH+4－N5mg/L、。2.1.2NO－2－N3HＲT10987hNO－2－N93．3%92．43%91．68%90．1%NO－2－N0．0170．0190．0210．029mg/L。NO－2－NNO－2－NNO－2－N。·61·13220194NO－2－NNO－2－N。NH+4－NNO－2－NNH+4－N。3HＲTFig．3EffectofHＲTontheremovalofnitritenitrogenbyembeddedbacteria2.22.2.1NH+4－N30℃14℃NH+4－N4。4NH+4－NFig．4VariationofremovalrateofNH+4－NwithsteppedtemperaturedropNH+4－N46～58mg/L30℃NH+4－N95%25℃NH+4－N93．78%20℃NH+4－N89．63%。15℃NH+4－N74%。14℃NH+4－N70%30℃26．32%。2.2.2NO－2－NNO－2－N49～65mg/L530℃NO－2－N89%。252015℃NO－2－N88．2%86．13%69%。14℃NO－2－N63%30℃29．2%。5NO－2－NFig．5VariationofremovalrateofNO－2－Nwithsteppedtemperaturedrop。。AAOBNH+4－NNO－2－N2。AAOB。。2.314℃14℃HＲT7891011hHＲT11h85%79%6、7。614℃HＲTFig．6EffectofHＲTontheremovalofammonianitrogenbyembeddedbacteriaat14℃·71·20194132714℃HＲTFig．7EffectofHＲTontheremovalofammonianitrogenbyembeddedbacteriaat14℃3①UASB15%。50mg/LHＲT7hNH+4－NNO－2－N95%89%。②30℃20℃。30℃14℃NH+4－NNO－2－N70%63%30℃26．32%29．2%。③14℃HＲT11hNH+4－NNO－2－N85%79%。1．ANAMMOXJ．201333156－62．2FurukawaKInatomiYQiaoSetal．Innovativetreat-mentsystemfordigesterliquorusinganammoxprocessJ．Bioresourcetechnology2009100225437－5443．3．J．20156641459－1466．4HsiaTHFengYJHoCMetaI．PVA－alginateim-mobilizedcellsforanaerobicammoniumoxidationanam-moxprocessJ．JournalofIndustrialMicrobiology＆Biotechnology2008357721－727．5《》．4M．2002．1995－。[e-mail]2019－03－11、、·81·13220194