掺加页岩后污泥沉降浓缩效果与利用钱觉时

第32卷第2期土木建筑与环境工程Vol.32No.22010年04月JournalofCivil,Architectural&EnvironmentalEngineeringApr.2010钱觉时,岳燕飞,谢从波,陈　伟(重庆大学材料科学与工程学院,重庆400045):2009-12-12:863(2007AA03Z553);(CSTC2007AB7043):(1962-),,,、,(E-mail)[e-mail]。　:改善污水污泥浓缩和脱水性能有利于污泥的处置和利用。试验研究了页岩细度和掺量在污泥沉降浓缩过程中的作用。结果显示,页岩粉细度为250～150μm,掺量≤5﹪时,掺加页岩粉可改善污泥沉降浓缩性能,沉降浓缩后污泥体积没有明显增加;掺加5%页岩的污泥沉降浓缩后含水率可控制在80%左右,经过离心脱水后含水率可降低至60%以下。试验结果还表明,虽然掺加页岩的污泥脱水后体积有一定程度增加,但可以明显改善污泥的性态,减少资源化利用中与页岩混合过程,还能明显降低污泥的气味;经页岩改性后浓缩脱水得到的污泥能用于烧制轻质陶粒。:污泥;页岩;沉降;浓缩;陶粒:X705　　:A　　:1674-4764(2010)02-0140-05ThickeningPropertiesandUtilizationofSewageSludgeModifiedbyShaleQIANJue-shi,YUEYan-fei,XIECong-bo,CHENWei(CollegeofMaterialScienceandEngineering,ChongqingUniversity,Chongqing400045,P.R.China)Abstract:Itisbeneficialfordisposalandutilizationtoimprovethickeninganddehydrationpropertiesofsewagesludge.Theinfluenceofdosageandfinenessofshaleonsludgesettlementwereinvestigatedexperimentally.AndItwasshownthattheadditionofshalecouldimprovethesludgethickeningwithoutvolumeincrementwhentheshaledosagewithfinenessof250～150μmwaslessthan5%.Themoisturecontentofthickenedanddehydrationsludgewith5%shaledosagewere80%andlessthan60%,respectively.Theadditionofshaleduringthesludgesettlementcouldimprovetheuniformityofthemixtureofsludgeandshale,whichwasfavoriteforproducingbuildingmaterials,andalleviatethesmellofsludgeindespiteofincreaseinsomeextentinvolumeafterdehydration.Thedehydrationsludgemodifiedbyshalecouldbeusedasrawmaterialstoproduceexcellentexpandedshale.Keywords:sewagesludge,shale,settling,thickening,expandedshale　　,20%～50%,70%[1]。200780%1500t[1-2],5%～10%[3]。、、,,,[4]。,。95%～97%,,、80%。“”,80%4,4～5[5]。,。[6-7],,[8]。,[9-12],[13-14]。[7],80%,,,。,,,,“”。,,,,。1　1.1　,1。,3%,850～425μm、425～250μm、250～150μm、150～80μm80μm,2。1　/%pH/%LOISiO2Al2O3Fe2O3K2O99.436.9639.5030.4311.174.771.512　/%SiO2Al2O3Fe2O3CaOMgOTiO2SO359.9515.315.664.092.540.800.011.2　1)3min,,。2),,。TDL80-2B,2000r/min,15min,、、。3),、、。,[7]。2　2.1　,,,,、。,,,。80%50%,15%,4%～17%。150μm,。1,,。99.43%,1%、3%、5%、10%、20%、30%,1.75∶1、5.26∶1、8.77∶1、17.5∶1、35∶1、52.6∶1。1,1%,;5%,10min,3%,,100min;10%,20min,;20%30%,1。2。2,10%,,。1　2.2　。330%。,850～425μm,425～250μm,250～150141第2期钱觉时,等:掺加页岩后污泥沉降浓缩效果与利用μm,150～80μm80μm5。2　3　3,250～150μm150～80μm,,80μm,。,,,。,,,。2.3　4。150μm,5%,100mL、150mL、200mL,。,5。,,100%。4　5　45,,,20min,,。,。2.4　,,,,,。6。6,;;,,,。,。7。6　7　142土木建筑与环境工程　　　　　　　　　　　　　　　　第32卷7,。5%,80%,,,60%。10%,70%,50%。8。8　8,10%,,,,30%,1.2;5%,70%;10%,1.5。,,。,5%,5%,,。35%。,pH,COD,。3　pHCOD/(mg·L-1)/(mg·L-1)Cr6+Pb2+Cu2+Zn2+6.964680.10.010.010.035%7.25380n.d.0.010.020.012.5　7,,95%90%,。,,,。,,。,,,,。12,,SiO2、Al2O3、Fe2O3,,,,,。,。,,,Fe2O3,[15]。。4。5%(:=8.77:1),、,、、、,400℃,15min,1150℃10min。,82%,3∶7,,4。4,,,。4　/%10.26.6/(kg·m-3)7407381h/%5.25.8/N410214143第2期钱觉时,等:掺加页岩后污泥沉降浓缩效果与利用3　1)。5%,81%,,。2)150μm,。3),5%,,60%。4),740kg/m3。:[1],.[M].:,2005.[2].2007、[EB/OL].=PPDDMV0&dname=292DK41&xpos=8,2009-02-21.[3],,.[J].,2005,6(4):40-43.　　ZHAOWEI,ZHANGLIN-SHENG,WANGJUN.Applicationofmunicipalsewagesludgeintheprocessofsinteringshalebrick[J].TechniquesandEquipmentforEnvironmentalPollutionControl,2005,6(4):40-43.[4],,,.[J].,2004,26(5):124-127.　　HUFENG-PING,ZHUZI-WEI,LIWEI-MIN,etal.Applicationandtrendofdevelopmentofsludgethickeningtechnologyinmunicipalwastewatertreatmentplant[J].JournalofChongqingJianzhuUniversity,2004,26(5):124-127.[5],.[J].,2002,28(2):35-36.　　YANGXIAO-WEN,DUYING-HAO.Thedevelopmentofforeignsludgedryingtechniques[J].Water&WastewaterEngineering,2002,28(2):35-36.[6],,,.[J].,2005,(3):40-44.　　WANGLIANG,ZHUNAN-WEN,ZHANGSHAN-FA,etal.Discussiononthepresentsituationandprospectofusingsludgeasbuildingmaterials[J].Water&WastewaterEngineering,2005,(03):4044.[7],,,.:,CN101186485A[P].2008-05-28.[8],,.[J].,2006(1):45-48.　　HUANGXIAO-QING,HUANGSHAO-BIN,YANGSHUN-HAN.Thepropertiesofslurryandresourclalizedutilizationofbuildingmaterials[J].CoalAshChina,2006(1):45-48.[9]GUORENXU,JINLONGZOU,GUIBAILI.CeramsitemadewithwaterandwastewatersludgeanditscharacteristicsaffectedbySiO2andAl2O3[J].Environ.Sci.Technol.,2008,42(19):7417-7423.[10]NAGAHARUOKUNO,SHIROTAKAHASHI.Fullscaleapplicationofmanufacturingbricksfromsewage[J].Wat.Sci.Tech,1997,36(11):243-250.[11]WENGCH,LINDF,CHIANGPC.Utilizationofsludgeasbrickmaterials[J].AdvancesinEnvironmentalResearch,2003,7(3):679-685.[12]LAURSENK,WHITETJ,CRESSWELLDJF,etal.Recyclingofanindustrialsludgeandmarineclayaslight-weightaggregates[J].JournalofEnvironmentalManagement,2006,80(3):208-213.[13].[J].,2009,35(1):68-71.　　YUWEI-QUAN.Studyonapplicationofwastewatertreatmentaddictivemadebysludgeincinerationresidue[J].Water&WastewaterEngineering,2009,35(1):68-71.[14],,,.[J].:,2009,48(3):406-408.　　RUANXIAO-FENG,HUHUAN,WUHAI-HUA,etal.APreliminaryStudyontheGrowthofPhilodendronselloumintheExcessSludgeofSewageTreatmentPlants[J].JournalofFudanUniversity:NaturalScience,2009,48(3):406-408.[15]RILEYCM.Relationofchemicalpropertiestobloatingofclays[J].AmericanCeramicSociety,1951,34(4):121-128.(编辑　王秀玲)144土木建筑与环境工程　　　　　　　　　　　　　　　　第32卷