分散剂对脱水污泥流动性能的影响

7710055、30s8500mPa·s2740mPa·s1%2%2740mPa·s1840mPa·s1640mPa·s2740mPa·s1360mPa·s。。X131Adoi10.3969/j.issn.1003-6504.2010.07.0141003-6504(2010)07-0061-04InfluenceofDispersantonRheologicalPropertiesofDewateredSludgeHUQingLEIXi-pingFANHai-hongLIHuiPowderEngineeringResearchInstituteXi’anUniversityofArchitectureandTechnologyXi’an710055ChinaAbstractRotationviscositymethodwasusedtostudytherheologicalpropertiesofdewateredsludgewhichwasaffectedbydifferentshearingtimesandwithdifferentdosagesoforganicorinorganicdispersants.Viscositychangesofdewateredsludgeunderdifferentmechanicalshearingtimesanddewateredsludgeviscosityimprovedwithdifferentdosageoforganicorinorganicdispersantswereinvolvedinthestudyaswell.Resultsrevealedthathighspeedmechanicalshearingmethodcanimprovetherheologicalpropertiesofdewateredsludgeandreducetheapparentviscositygreatly.Mechanicalshearingof30scanreduceapparentviscosityofdewateredsludgefrom8500mPa·sto2740mPa·s.Onthisbasisadditionof1%admixtureoftheorganicdispersingagentor2%ofinorganicdispersantstodewateredsludgecanmakeitsapparentviscosityreducefrom2740mPa·sto1840mPa·sand1640mPa·srespectively.Compoundorganicandinorganicdispersantstothesludgeover30sshearingcanreduceitsapparentviscosityfrom2740mPa·sto1360mPa·s.Dewateredsludgeshowedthethinningfluidproperty.Thestudycanprovideafavorabletestfortreatmentanddisposalofdewateredsludge.Keywordsdewateredsludgedispersantrheologicalpropertiesviscosity20108202005208[1]。100%13.7%[2]。、、、、[3]。[4]。、。95%~[e-mail]。EnvironmentalScience&Technology33720107Vol.33No.7July201033[5]70%~80%.[6]。。、。11.11.1.112。1.1.2、、。1.2S4-PIONEERXAXSZEN3690ZETANXS-11ASJ-303-25010000r/min202-00AB。1.31.3.10~163s-1。100s-1η=ζ/DsζDs。100s-1。22.112。[7]1。。。2100s-1。。30s8500mPa·s2740mPa·s。1、2[8]。2.21Table1ChemicalcompositionofthedewateredsludgeSiO2CaOAl2O3Fe2O3K2OMgO(%)26.39.1918.226.181.7281.3032Table2Theparametersofthedewateredsludge(%)Zeta(mV)pH(%)75-34.46~740627、、0.6%、1%、2%、4%3、4、5。。。6100s-1。61%1%~4%。1%。1%2740mPa·s1840mPa·s。。。2.3、0.6%、1%、2%、4%7、8。6333。。9100s-1。92%。2%～4%2%2740mPa·s1640mPa·s。。100s-11360mPa·s、。3175%。30s8500mPa·s2740mPa·s。21%2740mPa·s1840mPa·s。2%2740mPa·s1640mPa·s。32740mPa·s1360mPa·s。。[][1].[J].2008280547-50.PengQiSunZhi-jian.Presentstatusanddevelopmentofsewagesludge’streatmentandutilizationinChina[J].Ener－gyEngineering2008280547-50.inChinese[2],.[J].2009270999-102.ChenZhong-yingLiuAi-pingLiuYong,etal.Thein－vestigationandanalysisofChina’surbansewagetreatmentplantoperationalstatus[J].EnvironmentalPollutionandCon－trol2009270999-102.inChinese[3].[J].2005310368-71.TangXiao-huiZhaoLi.Progressinsludgedisposalathomeandabroad[J].EnvironmentalScienceandManagement2005310368-71.inChinese[4],.[J].200330046-8.HuZhi-juanShenXu-huiTaoCong-xietal.Harmlessandresourcestreatmentofsludgeincementkilns[J].Cement200330046-8.inChinese[5].[J].2004200554-58.ShenYing-huaWangBinWangZhi-zhong.Applicationoforganicpolymerflocculantinthedewateredsludge[J].PolymerMaterialsScienceandEngineering2004200554-58.inChinese[6].[P].2008101986702008-09-16.WuRong-biao.AWayandPreparationofReducingtheVis－cosityofUrbanLifeSludge[P].China2008101986702008-09-16.inChinese[7].、[J].2006270372-74.ZhangPengWuZhi-chaoAoHua-jun.Experimentaldeduc－tionoftherelationshipbetweensludgeviscidityconcentrationandtemperature[J].TechniquesandEquipmentforEnviron－mentalPollutionControl2006270372-74.inChinese[8].[M].2004:106-107.JiangTi-qian.ChemicalRheology[M].ShanghaiPublishingHouseofHuadongUniversityofTechnology2004:106-107.inChinese64