CAST工艺污水处理厂设计总结林英姿

CAST林英姿1　陈丽君2　刘海臣2　刘志生3(1.,150090;2.,130021;3.,130021)　针对来源复杂、水量小的混合型污水,污水处理厂的设计采用了水解酸化与CAST串联的污水处理工艺。通过对各单元工艺设计、设备布置的详细介绍和分析,总结了该工艺的特点以及工艺设计方面的经验。　污水处理厂　水解酸化　CAST　设计1　,,、,,。、CAST,、、。3×104m3d,,1.5×104m3d,1.5×104m3d,,3hm2。2　2.1　设计水质1。《》(GB18918-2002)B。1　mgLCODBOD5SSTKNNH3-NTP50022018055404602020201512.2　工艺流程CAST。、,CAST,BOD5COD,。1。1　　2.3　污水处理系统工作原理CAST2。2　、,,,COD、SS;CAST,CAST(SBR)。,,,,。CAST。、、、4,,22　　　200812266DOI:10.13205/j.hjgc.2008.06.005,,。2.4　主要构筑物工程设计(1)。,:7.5m×9.6m,2,0.9m。2。,3t,。()3.0m3d,1.5m3d。,。2,,Q=208m3h,H=13.5m,N=11kW,2;,Q=625m3h,H=13.5m,N=37kW,2。(2)。:1.5×104m3d,,:①、、;②、、。,130m3(m2·h)。30m3Mm3、60%、1.5tm3,2d,。(3)。1,4,COD0.2kg(m3·d)。,,,。。。,,。,,COD30%,BOD5SS25%。(4)CAST。CAST。2,41,,。:、、、(、)。6h1。Q=937.5m3,1,4。3,1,2,3,1∶5∶30。,3。1.5h,,1.5h,2,35%。0.5h,3.0h。1.5h,、。,8～10gL。1.5h,1.0h。937.5m3,1.7m,1,,14m1,1:Q=27m3h,H=13m。26.2m3,1.0h。3,(20℃)45.5m3min,0.69Pa,N=90kW,45%～100%。1068。2.8m3h。2　MLSS(mg·L-1)3500BOD5(kg·kg-1·d-1)0.1TN(kg·kg-1·d-1)0.014TP(kg·kg-1·d-1)0.001V()V()8.6∶1　　(5)2,1,1。1.50m3d,2.25m3d。(6)FeCl3,15mgL,10d,2,2000mm×2200mm,N=0.75kW。10%。。3。2(11),20.5kW,2(Q=15m3h,H=20m,N=4kW)。1,2.0m3h,1()D=260mm,L=9.6m,1(),D=260mm,L=6.5m。(53)23　　　200812266(3)PFMASCOD60%。(4)PFMAS3,—OH。、,,PFMAS。[1]　,,..,2005,19(4):314-317[2]　TatsiAA,ZouboulisAI,MatisKA,etal.Coagulation-flocculationpretreatmentofsanitarylandfillleachates.Chemosphere,2003,53:737-744[3]　AguilarMI,SaezJ,LiorensM,etal.Nutrientremovalandsludgeproductioninthecoagulation-flocculationprocess.Wat.Res.,2002,36:2910-2919[4]　,,,.--.,2005,24(5):979-983[5]　WangDongsheng,TangHongxiao.Modifiedinorganicpolymerflocculant-PFSi:itspreparation,characterizationandcoagulationbehavior.Wat.Res,2001,35(14):3418-3428[6]　,..,2000,20(11):1-6[7]　..,1999,15(2):1-4[8]　,..,1999,15(4):28-30[9]　,,,.--.,2004,24(4):301-304[10]　,,,.FMA.,1999,33(12):66-68[11]　,.Al(Ⅲ)Fe(Ⅲ).,1996,15(1):36-40[12]　.[].:,2000　　102617　19　(010)81294354E-mail　soundym@vip.sohu.com2008-03-03(23)3　(kg·d-1)2.2%0.8(m3·d-1)278h24%20(m3·d-1)143　(1)-CAST,,。,,,CAST,、、。(2)COD30%,SS25%,,,,,、。,,。(3),。(4),,,,,,。[1]　,.CAST.,2006(5):28-30[2]　,.-SBR-.,2006,32(9):43-45[3]　,..,2006,32(9):26-30[4]　,,,..,2007,33(9):35-39　　150090　E-mail　linyingzi1000@163.com2008-01-0453　　　200812266STUDYONULTRASONICDISINTEGRATIONOFEXCESSSLUDGEFORIMPROVINGITSBIO-GASYIELDPERFORMANCEOFTWO-PHASEANAEROBICDIGESTIONWuChunde　ShiJihang(7)……………………………………………………………………………………………………………………………………Abstract　Astudywasdoneonultrasonicdisintegrationofexcesssludgefromasewagetreatmentplant.Theresultsindicatedthatsolublechemicaloxygendemandwassignificantlyincreased,theremovalrateofvolatilesolid,netbio-gasproductionandtherateofbio-gasproductionwerealsoincreased,andmoreoverthecontentofmethanewasincreased,thusbio-gasyieldperformancewasimproved.Themainfactorsaffectingultrasonicdisintegrationweresoundenergydensityanddisintegrationtime,andthesecondaryfactorwasultrasoundfrequency.Keywords　excesssludge　two-phaseanaerobicdigestion　ultrasonicdisintegration　methaneEXPERIMENTONOPERATIONALPERFORMANCEOFBIOLOGICALSANDFILTERATLAWTEMPERATURESuChengyuan　ZhangJiankun　LiSiminetal(10)…………………………………………………Abstract　TheremovalratesoforganicmattersandNH+4-Nbyabiologicalsandfilterwerestudiedandthechangesinbiomassandmicrobi-alactivityinthefilterwereanalyzedatlawtemperature.ItappliedAHMforanalyzinginfluencingfactors.TheremovalratesofNH+4-NandCODMnwere51.31%to66.35%and9.18%to16.04%separatelyinbiologicalsandfilterat5.2℃to10.2℃.Microbialactivitywas0.029～0.055mg(h·g).Thebiomassandmicrobialactivityweredecreasedby17.33%and56.72%whenthewatertemperaturefelldownfrom12.7℃to5.2℃.ItappliedAHMforanalyzinginfluencingfactors.Theresultsshowedthatthetemperature,substrateconcentrationandfiltervelocityweretheimportantfactors.Theirweightswere0.318,0.270and0.118,respectively.Keywords　biologicalsandfilter　lawtemperature　biomass　microbialactivity　AHMTHECOMPARATIVETESTOFTREATMENTOFSLIGHTLYPOLLUTEDRAWWATERBYIM-MOBILIZEDNITROBACTERIAHouShuaihua　JiaBaoqiu(13)………………………………………………………Abstract　Aslightlypollutedrawwaterwastreatedseparatelybyimmobilizednitrobacteriapelletsinairliftloopreactorandbio-ceramicitereactor.ItwascomparedthedifferenceoftheireffluentinNH+4-N,NO-2-N,CODMnandturbidity.Theresultshowedthatthebio-ceramicitere-actor'sremovaleffectwasbetterthanthatofimmobilizednitrobacteriapelletsinairliftloopreactor,thedifferencewasverysmall.Furthermore,theimmobilizednitrobacteriapelletsinairliftloopreactordidn'tneedtobebackwashedandcouldrunsmoothlyonceitwasactivated.Immobi-lizednitrobacteriainthetreatmentofslightlypollutedrawwaterhasgreatpotential.Keywords　immobilizednitrobacteria　ceramicite　ammonia-nitrogen　nitrousacidnitrogenINVESTIGATIONONTHERELATIONBETWEENCAVITATIONNUMBERANDREYNOLDSNUMBERINHYDRODYNAMICCAVITATIONWangHuimin　SunSanxiang(15)……………………………Abstract　Theorificeplateswithdifferentthickness,variousholesandsizeswereusedashydrodynamiccavitationgeneratortostudythedegradationeffectofRhodamineBsolution.TherelationbetweenthecavitationnumberandtheReynoldsnumberwassetupandtheexperimentresultwasconformedwiththatofthedimensionalanalysis.Keywords　hy