LSPPNR工艺的脱氮除磷和污泥减量性能研究

LSP&PNR,,,,(,400045):,A/O,LSP&PNR,SRT=50dDO=0.51.5mg/LCOD=332420mg/LNH3-N=3040mg/LTN=3451mg/LTP=69mg/L,COD23mg/LNH3-N3.2mg/LTN17mg/LTP0.72mg/L;0.155gMLSS/gCOD,LSP&PNR,60%;BOD51.381.57kgO2/kgBOD5;10%15%:;;;;:(50278101);2005(2005AB7030):X703.1:A:1000-4602(2007)03-0035-05StudyonLSP&PNRProcessforNitrogenandPhosphorusRemovalandSludgeReductionJIFang2ying,ZUONing,HUYu2qin,ZHANGLiang2jin,HANWan2yu(KeyLaboratoryofThreeGorgesReservoirRegionsEco2EnvironmentMinistryofEducation,ChongqingUniversity,Chongqing400045,China)Abstract:Basedontheprocessregulationandcontrol,itisfoundthatundertheconditionoflongsludgeage,limitedaerationandcontinuousflowA/Oprocesscoupledwithsidestreamphosphorusre2movaltechnologybydrainingoutanaerobicphosphorus2bearingsupernatantcanimprovenitrogenandphosphorusremovalabilityofsludgereductionprocess.Hence,LSP&PNRprocessfornitrogenandphosphorusremovalandsludgereductionwasdeveloped.TestresultsoftheprocesstreatingcampuswastewatershowthatundertheconditionofSRT=50d,DO=0.5mg/Lto1.5mg/L,theinfluentCOD=332mg/Lto420mg/L,NH3-N=30mg/Lto40mg/L,TN=34mg/Lto51mg/LandTP=6mg/Lto9mg/L,theeffluentCOD,NH3-N,TNandTPareequaltoorlessthan23mg/L,3.2mg/L,17mg/Land0.72mg/Lrespectively.Theapparentsludgeproductionrateis0.155gMLSS/gCOD.Simultaneousnitrificationanddenitrification(SND)intheprocessistheprimaryformofnitrogenremoval,whichaccountsfor60%ofthetotalnitrogenremoval,andtheoxygenrequiredformetabolizing1kgBOD5is1.38kgto1.57kg.Theanaerobicphosphorus2bearingsupernatantdrainedintophosphor2ousremovaltankisonlyabout10%to15%oftheinfluent.Keywords:sludgereduction;nitrogenandphosphorusremoval;simultaneousnitrificationanddenitrification;sidestreamphosphorusremoval;sludgeproductionrate5323320072CHINAWATER&WASTEWATERVol.23No.3Feb.2007©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(LowSludgeProductionPhosphorusandNitrogenRemovalProcess),A/O,(Yobs),,,(),,,[1],/,,50mg/L[2],LSP&PNR,,,1111LSP&PNR11LSP&PNRFig.1FlowchartofLSP&PNRprocess,,;LSP&PNR,32442.5L,,,2.3L;12.8L,80%,20%PO3-4,10%15%,;(SND),,(DO0.51.5mg/L),50d,40%,10L/h,57g/L,0.140.16kgCOD/(kgMLSSd)112,NH4ClKH2PO4,(1)1Tab.1CharacteristicsoftheinfluentCOD/(mgL-1)TN/(mgL-1)NH3-N/(mgL-1)TP/(mgL-1)pH/3324203451304069781624113COD:HACHCOD();NH3-N:;TN:;TP:;DO:YSI5100DO;(OUR):YSI5100;pH:ORP-4312211SBRLSP&PNR2g/L,SRT50d,,15g/L,COD=332420mg/LNH3-N=3040mg/LTN=3451mg/LTP=69mg/L,COD23mg/L63233©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(GB189182002)B212,,22Fig.2VariationofphosphorusconcentrationinLSP&PNRprocess2,TP=69mg/L,3545mg/L,LSP&PNR,,,TP0.72mg/L,,16%18%,(P2O5)36%40%,213,2d1,33LSP&PNRFig.3EffectsofnitrogenremovalinLSP&PNRprocess3,3451mg/L(39.8mg/L),2441mg/L(31.2mg/L),22%;8.517.5mg/L(12.1mg/L),61.2%,69%,(Ys=0.155gMLSS/gCOD),7mg/L(C5H7NO2)12mg/L,LSP&PNR,44%,60%214SRT=50d,LSP&PNR()COD44LSP&PNRFig.4SludgeproductioninLSP&PNRprocess4,1gCOD0.155g,0.155gMLSS/gCOD,(0.4gMLSS/gCOD),60%3311DODO56DO73:LSP&PNR233©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=0.51mg/L,DO,DO;DO1mg/L,DO,(DO=14mg/L),0.120.14gMLSS/gCOD,DO0.81.5mg/L,LSP&PNR[3],,LSP&PNR0.083kg/d,1.57kgO2/kgBOD5,1.91kgO2/kgBOD5LSP&PNR(SOUR),11gO2/(kgVSSh),2040gO2/(kgVSSh)SOUR0.073kg/d,1.38kgO2/kgBOD5,LSP&PNR312,LSP&PNR,7SRTMLSSNs7SRTMLSSNsFig.7RelationshipamongSRT,MLSSandNsinLSP&PNRprocess7,SRT,MLSSNsSRT=50d,MLSS57g/L,Ns0.080.11gBOD5/(gMLSSd),,,,,,SRT(),,SRT=50dLSP&PNR,()313LSP&PNR,,(),HRT20min83233©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(q):CQ=MLSSVCP+CQ+(C-C)q(1)CC,mg/LQ,m3/dV,LC,dP,%MLSS,g/LCC,mg/L(1),q,,,,C5mg/L,1.2L/h,12%;7mg/L,q4LSP&PNRA/O,SRT=50dDO=0.51.5mg/L,COD=332420mg/LTN=3451mg/LTP=69mg/L,GB189182002B;0.155gMLSS/gCOD,60%DO,,DO0.81.5mg/L,1.381.57kgO2/kgBOD5,/(),SRT50d40mg/L;,12%,16%18%,:[1]SattaywinW,TsunoH,NagareH.Advancedsewagetreat2mentprocesswithexcesssludgereductionandphosphorusrecovery[J].WaterRes,2005,39(3):902-910.[2],.ERP-SBR[J].,2005,31(1):57-61.[3].[J].,2003,19(2):88-90.:(1964-),,,,:[phone]E-mail:[e-mail][e-mail]:2006-10-1193:LSP&PNR233©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.