UASB反应器处理异VC钠废水的启动特性研究项忠平

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34720097ENVIRONMENTALSCIENCEANDMANAGEMENTVol.34No.7July2009:2008-12-19:(1977-),,,,。::1674-6139(2009)07-0062-03UASBVC项忠平,邱俊(,330031) :在污泥接种浓度为10g/L,水温35℃~38℃的条件下,采用逐渐加大进水量提高有机负荷的方式45d内可以完成UASB反应器处理异VC钠生产废水的启动。启动完成后UASB反应器的容积负荷为6kgCOD/(m3·d),CODcr去除率可以达到85%。调试过程中向反应器内加入适量FeSO4,可以使污泥在较短时间内实现颗粒化,形成粒径为1mm~2mm、沉降性能良好的颗粒污泥。反应器出水VFA保持在400mg/L以下并能比pH更灵敏的反应出反应器内部的环境变化。:异VC钠生产废水;UASB应器;生产启动;有机负荷:X703.3:ACharacteristicsofUASBreactorinTreatingSodiumErythorbateProductionWastewaterXiangZhongping,QiuJun(SchoolofEnvironmentandChemicalEngineering,NanchangUniversity,Nanchang,330031,China)Abstract:UsingUASBreactortotreatSodiumErythorbateproductionwastewatercanfinishstart-upprocessin45daysun-dertheconditionsthatthevolatilesuspendedsolids(VSS)ofthesludgewas10g/L,thetemperaturewasbetween35to38degreecentidegreeandraisingorganicloadbyincreasingwaterintakequantity.Thevolumeloadcanachieve6kgCOD/(m3·d)andtheCODremovalratecanreach85%,whenstart-upcompleted.Thesludgebecamegranularsludgewith1mm~2mmgraindiam-eterandbettersettingperformanceinshorttimewhenFeSO4wasaddedappropriately.TheVFAofemissionwaterloweredtoa-bout400mg/LanditwasmoresensitivetoindicatetheenvironmentchangeofthereactorthanpHvalue.Keywords:sodiumerythorbateproductionwastewater;UASBReactor;start-up;organicloadingrate  (UASB)2070,[1]。UASB,、,,、[2]。1 1.1 VC,、α-()、α-、、VC()。1。1 BOD5(mg/L)CODcr(mg/L)SS(mg/L)NH3-N(mg/L)()(mg/L)(℃)pH2000~30002000~6000150~200~15100~200800~100035~405~71.2 UASB,3,,,。,。、·62·34720097·UASBVCVol.34No.7July2009,,[3]。9.0×8.4×8.0m,380m3,6.0kg-COD/(m3·d),600m3/d。1 UASB1.3 2。2 CODcr(GB11914-89)(GB11903-89)SS(GB11901-89)VFApHPHS-252 2.1 ,85%。,UASBCODcr2000mg/L,pH7200m3,[4]。,。,。10.48g/L,MLVSS/MLSS=0.57。2.2 ,24d,25m3/h,1h,0.5h。UASBpH6.5~7.5,,C:N:P=200:5:1,[5]。FeSO4,20mg/(L),[6]。3 3.1 3,0.53kgCOD/(m3·d),,pH6.5~7.5,N、P。(1d~7d),,[7],,。3,,[8],。24,,CODcr70%,,,,,,。,,CODcr,92%。3.2 CODcrCODcr2。,35℃~38℃,,,CODcr。CODcr,45dCODcr80%,92%,CODcr5000mg/LCODcr800mg/L。UASB10g/L[8]。2 CODcr·63·34720097·UASBVCVol.34No.7July20093.3 VFApHVFApH3,,VFA400mg/L,,UASB,。pH6.5~7.5pH6~7,VFA,pHNa2CO3,,,pH。VFA。3 VFApH3.4 ,[9]:(1)(1d~7d),,,,。(2)(8d~24d),,,,。,1m,,0.15mm~0.2mm,、、。(3)(25d~90d),,、,,,1mm~2mm,,。(4)(90d),。,,,,,1.5mm~2mm,12.5mm/s,,、,。4 (1)UASBVC、,CODcr85%,92%,UASB。(2)35℃~38℃,10.48g/L,45d。(3)FeSO4,,,。(4)pHVFA,VFApH,。:[1]WenNi,HongweiDuan,XiaolingAi,JianpingLi.Pro-motingsludgegranulationbyputtingxonotliteintotheUASBre-actorsduringstarting-upstage[J].JournalofUniversityofSci-enceandTechnologyBeijing,2003,10(4):7-11.[2]孙晋刚,朱茂田,王彬.UASB-A/O工艺处理玉米淀粉生产废水[J].中国给水排水,2008,24(10):57-59.[3]李敬存,曹志恒,杨丰坤.UASB-接触氧化-气浮处理柠檬酸废水[J].环境污染治理技术与设备,2006,7(5):135-137.[4]谷晓娟,许海亮,胡婷芳.高浓度香料香精废水处理工程改造[J].给水排水,2007,33(7):62-65.[5]郑俊,张刚,王健,等.UASB/水解酸化/曝气生物滤池处理高浓度聚酯废水[J].中国给水排水,2007,23(10):50-54.[6]肖本益,王瑞明,贾士儒.二价金属离子对UASB颗粒污泥的影响[J].中国给水排水,2002,18(6):26-28.[7]李东伟,王克浩,徐中慧,等.产甲烷UASB中颗粒污泥的快速培养特性研究[J].中国给水排水,2008,24(9):21-25.[8]刘琼,徐伏秋,孙雪萍.IC反应器处理乳酸废水的启动特性[J].水处理技术,2008,34(1):66-68.[9]李再兴,宋存义,杨景亮,等.大型UASB处理阿维菌素废水厌氧污泥颗粒化研究[J].环境工程学报,2007,1(8):62-65.·64·

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