一体化CIBR反应器的低温脱氮除磷中试-刘礼祥

CIBR刘礼祥,　章北平,　周红燕,　吴云生,　颜　岗(华中科技大学环境科学与工程学院,湖北武汉430074)　　　:　开发了一种新型一体化反应器———CIBR,通过维持厌氧、缺氧和好氧的交替运行,实现了单池连续流同步脱氮除磷。在低温(平均水温为12.24℃)状态下设定了6种工况进行脱氮除磷的中试,结果表明,在曝气为2h、搅拌为2h、静沉为2h的工况下CIBR出水COD、NH3-N、TN和TP的平均值分别为29.46、2.86、11.24和0.94mg/L,满足GB18918—2002的一级B标准,但当进水TP持续较高(≥4mg/L)时,需辅助物化处理或后处理方可实现TP的达标排放。综合有机物降解、脱氮除磷及能耗,确定工况2(曝气:2h,搅拌:1h,静沉:1h)为最佳工况。　　:　污水处理;　一体化CIBR反应器;　脱氮除磷;　低温:X703.1　　:A　　:1000-4602(2006)19-0021-04　　:(863)(2003AA601110)Pilot-scaleStudyonRemovalofNitrogenandPhosphorusbyIntegratedContinued-flowIntermittent-aerationBiologicalReactoratLowTemperatureLIULi-xiang,　ZHANGBei-ping,　ZHOUHong-yan,　WUYun-sheng,　YANGang(SchoolofEnvironmentalScienceandEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China)　　Abstract:　Anewkindofintegratedcontinued-flowintermittent-aerationbiologicalreactor(CIBR)wasdeveloped.Bymaintainingthealternativeoperationofanaerobic,anoxicandaerobicprocess,simul-taneousnitrogenandphosphorusremovalswereimplemented.Sixdifferentmodesofnitrogenandphos-phorusremovalswerestudiedatlowtemperature(averagewatertemperaturebeing12.24℃).There-sultsshowthatundertheconditionsofaeration,mixingandsettlingperiodsbeing2hourseach,theaver-ageconcentrationsofCOD,NH3-N,TNandTPintheeffluentare29.46mg/L,2.86mg/L,11.24mg/Land0.94mg/Lrespectively,satisfyingthefirstB-gradedischargestandardspecifiedinGB18918-2002.However,whenconcentrationofTPintheinfluentexceeds4mg/L,chemicalmethodsorotherpost-treatmentprocessneedtobeappliedinordertomaintainTPconcentrationatthedischargestand-ards.Consideringthequalitativeremovalsoforganics,nitrogenandphosphorus,theefficientconsump-tionofenergyandtheratioofaeration,themodeⅡinwhichtheperiodsofaeration,mixingandsettlingare2h,1h,and1hrespectivelyisconsideredoptima.l　　Keywords:　municipalsewagetreatment;　integratedcontinued-flowintermittent-aerationbiologi-calreactor;　nitrogenandphosphorusremoval;　lowtemperature　　,,,A2/O、21第22卷　第19期2006年10月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vo.l22No.19Oc.t2006BardonphoUCT[1];,SBR[2]。,,。[3～5],,,,。———CIBR,,。1　试验部分1.1　CIBR,200m3/d。:,,、,。1。1　CIBRFig.1　DiagramofplanearrangementandtechnicalconstructionofintegratedCIBR1.2　COD、pHpHS-3C,[6]。1.3　200510,20062,22.2～9.7℃(12.24℃)。,。CIBR1。1　CIBRTab.1　InfluentqualityofintegratedCIBRCOD/(mgL-1)NH3-N/(mgL-1)TN/(mgL-1)TP/(mgL-1)pH903.9557.19149.9813.797.4525.093.245.180.046.75162.0923.8225.605.147.26　　、6(2),,、TP。2　6Tab.2　Experimentalresultsinsixmodes123456——/h2-1-02-1-11-1-12-2-22-0-22-0-40.660.500.330.330.50.33/(kWh)0.300.230.180.180.180.12/℃12.6513.3014.5111.2312.6513.19COD/(mgL-1)273.56205.44148.58266.2799.33206.7352.6454.9341.4729.4623.6967.75NH3-N/(mgL-1)18.8613.4015.2715.6115.4237.527.685.837.702.861.2320.90TN/(mgL-1)23.0326.8023.2228.4327.9230.6610.5212.4512.9211.2417.2821.02TP/(mgL-1)4.684.112.082.832.162.931.801.351.230.940.452.10pH6.937.117.347.217.187.177.227.227.287.247.017.25　:　①3kW,;②1.5kW,;③,。2　结果与讨论2.1　、,TN,CIBR。23,2～5。2　CODFig.2　ComparisonofCODremovalratebetweenmode2andmode322第19期　　　　　　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　　　　　　　第22卷3　TPFig.3　ComparisonofTPremovalratebetweenmode2andmode34　NH3-NFig.4　ComparisonofNH3-Nremovalratebetweenmode2andmode35　TNFig.5　ComparisonofTNremovalratebetweenmode2andmode32、3、,0.23、0.18(kWh)/m3。2～5,23,COD、、TNTP2.13%、9.38%、8.33%26.84%,,3,,、,。,2h,。2.2　TP12,;56,TP。21,,1h。,2TP1(TP73.14%60.88%),,,,TP。56、,62h4h。,5(79.35%)6(27.76%),TP。:,,。65,。,TP,,,TP。2.3　,,。2、4、5,,6、7。67,4、5NH3-N,81.94%92.33%,。TN,5TN33.66%,460.76%,。,5NH3-N2,TN,TN。,1、2,,NH3-N。23第19期刘礼祥,等:一体化CIBR反应器的低温脱氮除磷中试第22卷6　NH3-NFig.6　ComparisonofNH3-Nremovalrateindifferentmodes7　TNFig.7　ComparisonofTNremovalrateindifferentmodes,,,。,1h。2.4　2,3、6,4,3,,6,。6,。1、2NH3-N4、5,;3NH3-N,。4TN,。TP,1、2、4、536,3,;6,,TP。6,24,CIBR(15℃),。、、,2。3　结论①　CIBR(12.24℃),、,。②　4(:2h,:2h,:2h),COD、NH3-N、TNTP76.60%、81.94%、60.76%66.76%。TP(≥4mg/L),,GB18918—2002B。③　,TN,。,2(:2h,:1h,:1h)。:[1]StgaardK,ChristenssonM,LieE,etal.Anoxicbiologicalphosphorusremovalinafull-scaleUCTprocess[J].Wa-terRes,1997,31(11):2719-2726.[2]　,,.SBR[J].,2004,24(4):576-580.[3]　,,,.A2N[J].,2003,19(9):8-11.[4]　,,,.[J].,2000,20(4):366-370.[5]　,,,.[J].,2002,18(9):4-7.[6]　.(3)[M].:,1997.:(1977-　),　,　,　,　。:(0)13707172323E-mail:[e-mail]::2006-05-2024第19期　　　　　　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　　　　　　　第22卷