城市垃圾焚烧渗沥液中Ca2对厌氧EGSB处理效果的影响张瑞

82Vol．8No．220142ChineseJournalofEnvironmentalEngineeringFeb．2014Ca2+EGSB*100083Ca2+EGSBCa2+。COD17000mg/LCa2+6000mg/LEGSBCOD93%Ca2+6000mg/LCOD。Ca2+Ca2+Ca2+EGSBCOD。Ca2+。Ca2+X703A1673-9108201402-0460-05EffectofcalciumontreatmentofleachatefrommunicipalsolidwasteincinerationplantbyEGSBZhangＲuiDangYanQiuBinSunDezhiBeijingKeyLaboratoryforSourceControlTechnologyofWaterPollutionBeijingForestryUniversityBeijing100083ChinaAbstractAlab-scaleexpandedgranularsludgebedEGSBreactorwasusedtotreattheleachatefrommunicipalsolidwasteMSWincinerationplant.TheeffectofcalciumonthetreatmentofMSWbyEGSBreactorwasresearched．TheinfluenceofdifferentCa2+concentrationsonspecificmethanogenicactivitySMAoftheanaerobicgranularsludgewasstudiedbystatictests．TheexperimentalresultsshowedthatCODremovalefficien-cyreachedover93%whenCa2+concentrationswas6000mg/LandtheinfluentCODwas17000mg/L．TheCODremovalefficienciesdroppedobviouslywhenCa2+concentrationswereover6000mg/L．Underthiscondi-tiontheprecipitationinsludgeincreasedsignificantly．ThestatictestshowedthatthelowCa2+concentrationsintheinfluentimprovetheSMAofanaerobicgranularsludge．HoweverthehighCa2+concentrationsinhibitedtheSMAdistinctly．ItisamajorreasonthatleadstodecreaseofCODremovalefficienciesunderthehighCa2+con-centrationscondition．Theexperimentalresultsshowedthatthespecificmethanogenicactivityofanaerobicgranu-larsludgeweakenedwithincreasingofCa2+concentrations．Keywordsleachatefrommunicipalsolidwasteincinerationplantcalciumexpandedgranularsludgebedreactorspecificmethanogenicactivityinhibition512780522013－01－302013－02－241990～。[e-mail]*[e-mail]、3～5d、1。expandedgranularsludgebedreactorEGSB、、、、。mg/L23。EGSBCa2+。2Ca2+EGSB4-9。Ca2+EGSB。EGSBCOD、VFAsCa2+。Ca2+。11.1EGSBMLSS=31.51g/LVSS/TSS=0.710.5～1.5mm。。1.21∶1。/L7mL5mL1mLK2HPO430mgKHCO3312mgK2CO3324mgNaCl1440mgNaNO350mgNaHCO33012mgMgCl2·6H2O3114mgMgSO4156mgNH4HNO32439mg659mgNa2S·9H2O1mL。Eh120～180mVNaOHpH5.8～6.0。NH4Cl170gKH2PO437gCaCl2·2H2O8gMgSO4·4H2O9g。FeCl3·4H2O2000mgCoCl2·6H2O2000mgNiCl6·6H2O50mgCuCl2·2H2O30mgZnCl250mgMnCl2·4H2O500mgH3BO350mgNH46Mo7O24·4H2O90mgEDTA1000mg500mgHCl36%1mL。1.3EGSB4L725mm。2L35±1℃HＲT2.5d。1∶1COD4000、6000、8000、10000、12500、1500017000mg/LCOD97%。EGSBCOD17000mg/LCa2+500、2000、3000、4000、5000、60007000mg/LEGSBCOD、VFAs。125mL35±1℃。3min。3%NaOH。1.41.4.11～77125mL10mLVFACOD100g/L、0.1mL、0.1mL、0.1mL100g/LNa2S0.02g。12～7CaCl2Ca2+500、1000、2000、3000、50008000mg/L。10mL31.51g/L100mL0.1mol/LHClNaOHpH7.0。3min。35±1℃120r/min。1.4.25min。。1.4.3SMAr1。SMAr=SMAs/SMAk×100%1SMAr———%SMAs———Ca2+gCODCH4/gVSS·dSMAk———gCODCH4/gVSS·d。2。1648SMA=24Ｒ/CF×V×VSS2SMA———gCODCH4/gVSS·dＲ———mLCH4/hCF———CH4CODmL/gV———LVSS———gVSS/L。1.51COD2pHThermoOＲION3STAＲpH3TSSVSS43%NaOHCO2、H2S5Ca2+AA63006VFAs。22.1Ca2+EGSBCa2+EGSB1。1Ca2+EGSBFig.1EffectofCa2+concentrationonperformanceofEGSBEGSBCa2+500mg/L5000mg/LEGSBCOD98%～93%COD900mg/LCa2+800mg/L。VFAs5.6～8.2mmol/L10mmol/L。Ca2+Ca2+。Ca2+7000mg/LEGSBCOD60%COD6500mg/LCa2+3400mg/L。EGSBVFAs42.05mmol/L1EGSB1011Ca2+。1Ca2+Table1ChangingofindexindifferentCa2+concentrationsCa2+mg/LCa2+mg/LVFAsmmol/LVSS/TSSCH4L/gCOD50026.8275.60.6930.362200045.2235.60.6290.3543000143.0685.80.5730.3314000495.1496.50.4960.3125000806.9538.20.3470.28760002118.62216.40.2740.21870003398.98845.50.1290.1851Ca2+EGSBVSS/TSS。Ca2+12。EGSBCOD。11Ca2+5000mg/LEGSBCOD。Ca2+3000～6000mg/LEGSB。2.2Ca2+Ca2+2。2Ca2+5002642Ca2+EGSB2Ca2+Fig.2MethaneproductionofgranularsludgeatdifferentCa2+concentrations1000mg/L。Ca2+500mg/LSMAr314.85%3Ca2+。Ca2+20008000mg/LCa2+。Ca2+2000mg/LSMAr95.09%3Ca2+3000mg/LSMAr89.35%70%～95%Ca2+50008000mg/LSMAr32.45%14.54%40%13。Ca2+“”1415。16Ca2+Ca2+Ca2+。CO2Ca2+CaCO3OＲP、。CaCO3EGSB。VanLangerak17Ca-CO3CaCO3。3Ca2+SMArFig.3ＲelationshipbetweenCa2+concentrationandSMAr2.34。4Fig.4Methaneproductionofanaerobicgranularsludgeduringrecovery4Ca2+。Ca2+。Ca2+5001000mg/LSMAr100%3Ca2+。Ca2+20005000mg/LSMAr75%～95%3Ca2+8000mg/LSMAr40%～75%313Ca2+Ca2+。Ca2+3648pHCaCO3。Ca2+Ca2+CaCO3。31EGSBCa2+Ca2+6000mg/LEGSBCOD93%Ca2+7000mg/LCOD60%。2Ca2+Ca2+EGSB7000mg/L。Ca2+5000mg/L。3Ca2+2000mg/LCa2+2000mg/LCa2+。1．．200019289-91LiHuaZhaoYoucai．Effectofstackingandfermentingontherefusethermalvalueintheincinerationplant．ShanghaiEnvironmentalSciences200019289-91inChi-nese2．．200619286-89HePinjingFengJunhuiQuXianetal．Characteristicsandtreatmentalternativesofleachatefromrefusestoragepitinmunicipalsolidwasteincineration．ＲesearchofEnviron-mentalSciences200619286-89inChinese3．．2007．46ChenPeng．Studyonthetreatmentprocessesforlandfillandincinerationplantleachates．ChongqingMasterDis-sertationofChongqingUniversity2007．46inChinese4．Ca2+．2003411157-1595．UASB．2009303822-826YangShuchengHeYanlingLiuYonghuietal．CalciumcarbonateprecipitationinUASBreactorswithdifferentsub-strates．EnvironmentalScience2009303822-826inChinese6YuH．Q．TayJ．H．FangH．H．TherolesofcalciuminsludgegranulationduringUASBreactorstart-up．WaterＲesearch20013541052-10607YongH．K．SungH．Y．JeongY．Ｒ．etal．Develop-mentofanovelUASB/CO2-strippersystemfortheremovalofcalciumioninpaperwaatewater.ProcessBiochemistry200439111393-13998LiuJ．HuJ．ZhongJ．Theeffectofcalciumonthetre