您好,欢迎访问三七文档
当前位置:首页 > 行业资料 > 其它行业文档 > 分段进水AO脱氮工艺反硝化速率的测定王社平
分段进水AO脱氮工艺反硝化速率的测定王社平1,2 王卿卿1 惠灵灵1 金尚勇1(1.,710068;2.,710055) 采用分段进水AO脱氮工艺中试装置,对活性污泥的反硝化速率进行测定,结果表明:反硝化过程存在3个速率明显不同的阶段,且随着反应时间的延长,反硝化速率逐渐降低。根据试验结果,提出城市污水厂缺氧选择池和生化反应池缺氧区设计计算时反硝化速率、水力停留时间的参考值。 城市污水 反硝化速率 分段进水AO脱氮工艺0 。,,,,,。,(),,,NO-2-NNO-3-N(N2)N2O、NO[1]。,NO-3-N,NO-3-N,NO-3-N,rMLVSS,NUR=rMLVSS(mg(g·h))[2]。AO,,AO。。1 1.1 试验装置,1。,D=15cm,H=25cm,V=4200cm3。1.2 测定方法AO,1L,30min,1—;2—;3—;4—;5—pHT;6—;7—;8—;9—。1 。,,,4000cm3,,(KNO3)0.5mL(Allylthiourea,ATU,,)[3],25~45mgL。,,,,。1,4、8、12、16、20、25、30、35、40、50、60、70、80、100、120、140、160、180、200、220、240、260min,NO-3-N。,MLVSS。NO-3-N,NO-3-N,r,。56 20086263DOI:10.13205/j.hjgc.2008.03.0222 2.1 活性污泥反硝化速率的测定结果,AO,2,1。2 1 NO-3-N(mg·L-1)NURr(mg·L-1·h-1)123MLVSS(g·L-1)℃(mg·g-1·h-1)123a34.3318.246.383.111.1525.615.865.552.70b28.0032.526.833.081.6123.320.204.241.91c42.3232.6710.322.741.9223.117.025.381.43d31.8414.795.673.891.1324.713.095.023.442.2 结果分析2,3,,。1,NO-3-N,13.09~20.20mg(g·h),1,12~30min,。,NO-3-N,。,15~30min。2,4.24~5.55mg(g·h),60~130min。。2。3,1.91~3.44mg(g·h),40~80min,,,,。,(COD),CODNO-3-N。2(d),,NO-3-N31.84mgL,COD174.00mgL,NO-3-N5.71mgL,COD94.00mgL。,NO-3-N(COD)2.86gg,1gLNO-3-NN2,(COD)57 200862632.86gg[4]。CODNO-3-NΔSCODΔSNO-3-N=(174.00-94.00)(31.84-5.71)=3.06。,NO-3-NCOD。:(1),,COD;(2);(3),。3 (1)3,,。1,13.09~20.20mg(g·h),12~30min;2,4.24~5.55mg(g·h),60~130min;3,1.91~3.44mg(g·h),40~80min。(2)。、。(3),NO-3-NCOD。[1] ..:,1998[2] ,.AO.,2006,19(3):78-83[3] ,,,.(OUR).,1999,9(3):225-229[4] LeslieGradyCP,JrGlenTDaigger...,,.:,2003 710068 50 E-mail wsp901@vip.sina.com2007-09-04(19)3 21dCODCOD(mg·L-1)669036701520294%43.554.99.7%87.297.6 :13~15gL,11830mgL。3 (1)()-2,35~38℃,24h,12.0gL;,COD2.0gL,12h。(2)()COD,()-2COD87.2%,3.1kg(m3·d),4kg(m3·d),,COD97.6%。[1] ,,,.-.,1997,23(2):32-35[2] ,,,..,1998,19(2):47-50[3] ,,..,2006,9:141-144[4] ,,..(),2004,23(1):57-60[5] ,,,.Fenton.(),2005,21(4):71-74[6] ,,,.UASB.,2004,27(6):86-89[7] ,,..,2005,28(5):331-335[8] ,.-.,2006,22(1):92-94[9] ,.SBR.,2006,26(5):803-807 100875 E-mail zhangsheng9082@sina.com。2007-10-1858 2008626395%.ThemaximumvolumeloadingofCODforUBFwas6~7kg(m3·d).pHalkalinity,regurgitationratiowereimportantfactorsofsystemstabilization.WhenMLSS10000mgL,themembranewasgreatlypolluted.Themembranefluxwasachieved75%ofitsoriginaloneafterwashedbyacid,alkalineandNaClOsolutions.Keywords UBF AOMBR membranepollutionCHANGEOFBIOMASSINACTIVATEDCARBONFILTERSBEFOREANDAFTERBACKWASHINGZhangZhaohui ShaoLin WangLiangetal(42)……………………………………………………Abstract Thesuccessofbiologicalactivatedcarbon(BAC)filtersdependsoneffectivebackwashing.Themainpurposeofbackwashingistocarefullycontrolandmaintainthebiomasswithasuitablerangeonthemedia.Inthisexperimentitwasfoundthatsuspendedbiomasswasthemainbodywhichwasremovedduringbackwashing,anditwastheattachedbiomassthatshouldbecarefullycontrolledduringbackwashingofBACfilters.Keywords biologicalactivatedcarbonfilters backwashing biomassPRETREATMENTTECHNOLOGYOFCHEMICALWASTEWATERWITHHIGHCONCENTRAT-IONBYFeCINNER-ELECTROLYSISMETHODHanRongxin LiYanfeng YuFenggangetal(45)…Abstract Astudyonpretreatmentofchemicalindustrywastewaterwithhighconcentrationcontaminationbynon-aeratdinner-electrolysiswascarriedout.Theoptimumoperationconditionsareasfollows:pHis4~5,therateofthesolidqualityandtheliquidbulkis0.8gmL,HRTis60min,Theratiooftheironandtheactivecarbonqualityis3∶1,theremovalratesofCODandchromaticitywere71.6%and87.5%respectively,theBOD5CODratiowasimprovedfrom0.09to0.19,andthemethodreachedagoodpretreatmenteffect.Andtheeffectofthereactiontemperatureontheinner-electrolysiswasstudied,too.Keywords inner-electrolysis industrialwastewater COD chromaticityTECHNIQUEOFTREATINGCOLDROLLINGEMULSIONWASTEWATERANDITSAPPLICATIONLiZhengyao SongCunyi WangLi(48)…………………………………………………………………Abstract Thetreatmentofcoldrollingemulsionwastewaterfromanironandsteelcorporationwasstudied,whoseoilandCODwere6200mgLand3400mgLrespectively.OrganicpolymerSYSandpolyaluminiumchloridewereusedasefficientemulsionbreaker.Therateofoilremovalwas99.58%andtherateofCODremovalwas97.79%aftertwo-stepdemulsification.Thesuitedconditionsofthetwostepdemulsificationwereconfirmedafterexaminingtheeffectsoftheamountofemulsionbreaker,timefordemulsification,mixingintensityandpHondemulsification.Theprocessofseparatingoil-demulsification-airfloatation-filtrationhasbeenadopted.Theeffluentmeetsthesecond-orderofthenationalsewagedischarge.Keywords coldrollingemulsionwastewater demulsify applicationTREATMENTOFOILYWASTEEMULSIONBYMICROELECTROLYSIS-FENTONPROCESSLiChuncheng(51)…………………………………………………………………………………………………………………Abstract Treatmentoftheoilywasteemulsionproducedinthemachiningbymicroelectrolysis-Fentonprocesswasstudied.TheinfluencesofpH,thequantityofH2O2,thequantityofironfragment,theratioofFeCandthereactiontimeontreatmenteffectswereexplored.Onthebestinfluentcondition,theremovalrateofCODwasabove97%.Keywords wasteemulsion microelectrolysis-Fenton COD removalrateTREATMENTOFHEXAVALENTCHROMECr(Ⅵ)INWASTEWATERFROMVANADIUMINDUSTRYXieJinglong(54)……………………………………………………………………………………………………Abstract Theredoxreactioncanbeproducedbythereducingprope
本文标题:分段进水AO脱氮工艺反硝化速率的测定王社平
链接地址:https://www.777doc.com/doc-6560592 .html