UASB接触氧化絮凝沉淀工艺处理低浓度生活污水小试研究戴秋萍

UASB--戴秋萍,胡勇有(,　510640)　:UASB--,5.8h,UASB3.8h,2.0h,COD100～300mg·L-1,CODCrBOD583.4%92.7%。,,CODCr20.1mg·L-1,BOD53.2mg·L-1,≤8NTU,,,,。:UASB;;;:X703　:A　:1000-1166(2002)02-0008-04StudyonTreatmentofLowConcentrationDomesticWastewaterbyProcessofUASB-ContactOxidation-FlocculationTechnologyDAIQiu-ping,HUYong-you(DepartmentofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510641,China)Abstract:LowconcentrationsewagewastewaterwastreatedbyUASB-contactoxidation-flocculationtechnology,theresultsshowedthatwhenthehydraulicretentiontimeofthebiologicstagewere5.8h(3.8hinUASBand2.0hincontactoxidation),andtheinfluentCODwas100～300mg·L-1,theaverageremovalratesofCODCrandBODreached83.5%and93.13%re-spectively.Tolerableshockloadrangeofthesystemwaswide.Theexcesssludgeproductionwaslow.TtheaverageeffluentCODCrwas20.0mg·L-1,andtheBOD5was3.0mg·L-1,Thedegreeofturbidnesswasbelow8NTU.Thefinaleffluentwasclearwithoutsmell,andcouldbereused.Keywords:UASB;andcontactoxidation;lowconcentrationsewagewastewater　　100,,,。,COD,[1]。CODCr1000mg·L-1,30,。,,CODCr300～600mg·L-1,[2]。,、、、,、“”,,,[3]。,(CODCr250mg·L-1),——　　:2002-01-10　:2002-02-21　　:(970532),(2KMO650S)　　:(1975～),,,,。8　ChinaBiogas2002,20(2)。UASB--(COD100～300mg·L-1)。1　1.1试验水质,,COD(100～300mg·L-1,121.4mg·L-1),(10～40mg·L-1)。1.2试验工艺——,UASB,(80L);。,UASB。UASB,,SS,。1。1　1.　2.　3.　4.UASB5.　6.　7.　8.1.3试验方案1.3.1。UASB,UASB,20d,,,。20dHRT10h,30dHRT10h4h。、,,,,,。1.3.2UASBCOD,BOD,SS;NH3-N;,。1.3.3FeCl2,FeCl3,FeSO4,Fe2(SO4)3,Ca(OH)2,CaCO3,CaCl2,,、、。,。2　2.1　CODCr的去除率2.1.1CODCr2　COD　　2320001～3UASBCODCr。UASBCODCr,7030%～40%,51%;CODCr。CODCr70%,CODCr30mg·L-1,COD。2.1.2COD9　ChinaBiogas2002,20(2)3　COD　　2000,COD4,5,COD。UASBCOD40%～60%,74.7%,COD70mg·L-1,。COD。COD75%,99%。COD121.4mg·L-1,UASBCOD57.0mg·L-1,COD20.1mg·L-1,UASBCOD53.0%,COD83.4%。4　COD2.1.34,COD,,,COD,60mg·L-1,COD,400mg·L-1,,COD,COD30mg·L-1。5　COD　　,,,UASB,。2.1.4(3)。:34,UASB5.57h,2.7h,8.27h。520012,UASB3.8h,2.0h,5.8h。38.27h5.8h,。2.2　稳定运行阶段生物段处理效果(312)、。1(),CODCr90～300mg·L-1,CODCr83.4%;BOD35～73mg·L-1,BOD51～10mg·L-1,BOD592.7%。NH3-N83.0%。18.6%。2.3沉淀除磷效率315519,FeCl2,FeCl3,FeSO4,Fe2(SO4)3,,,10　ChinaBiogas2002,20(2)1　UASB%CODmg·L-1121.457.020.183.4BODmg·L-143.717.03.292.7NH3-Nmg·L-120.4711.493.4983.0Pmg·L-12.742.682.2318.6Ca(OH)2,CaCO3,CaCl2,、、。,,。,。FeCl3Fe2(SO4)3。pH6.7,6.5。,,,,,30%～40%。。:60%～70%(5mg·L-1);70%～80%(8mg·L-1);90%(10mg·L-1)。10mg·L-1,。6。P0.5mg·L-1。6　2.4污泥的观察UASB2～3mm,,,,SVI13。UASB,。。,(Methanothrix),;(Methanoscamia),。,,,,,。,,,;,,,。。,。2.5　温度、浊度与pH值,5℃,35℃,10℃,28.9℃,。pH。522613pH,0.89NTU,5.7NTU,78。pH6.7,7.1,、UASBpH。7　(下转第30页)11　ChinaBiogas2002,20(2),。,,,。(4)()。。,,。(5),,,,,。:[1]　,.[M].:,1999.[2]　.(3)[J].2001,(2):94-96.[3]　.(2)[J].2001,(4):202-203.[4]　.[J].,2001,(4):32-35.(上接第11页)3　(1)UASB(COD100～300mg·L-1),,,UASBCOD57.0%,74.7%。8　pH(2),。,COD,,COD20.1mg·L-1,BOD3.2mg·L-1,≤8NTU,。(3),。,,0.5mg·L-1。(4)UASB--,8978-1996,COD,BOD,SS,NH4-N,。:[1]　.[J].,1996,(4):19～21.[2]　,,.[J].,1993,6(1):39～43.[3]　.[J].,2000,26(6):32～34.[4]　.[M].,1998.[5]　GLettinga,RRoersma,PGrin.AnaerobicTreatmentofRawDomesticSewageatAmbientTemperaturesUsingaGranularBedUASBReactor[J].BiotechnologyandBioengineering,1983,25:1701-1723.30　ChinaBiogas2002,20(2)