AO反应器处理养殖场废水牛明芬

20111271　()JournalofShenyangJianzhuUniversity(NaturalScience)　Jan.　2011Vol.27,No.1　　:2010-07-29:(2007BAD71B06-3);(2008ZX07208-007-02):(1967—),,,,.:1671-2021(2011)01-0140-06A/O牛明芬,李卓坪,张　迪,葛安东,刘知远(,110168)　:通过A/O反应器处理猪场厌氧发酵液试验,研究A/O反应器联合驯化过程中营养物质的去除规律.A/O工艺对猪场厌氧发酵液启动完成后,改变系统运行参数,包括:溶解氧(DO)、水力停留时间(HRT)和内循环回流比(r)等,研究系统处理效率.采用了先独立后联合的启动方式,在历时50d后,A/O反应器顺利启动,出水COD、NH3-N去除率均稳定的保持在90%左右,TN去除率最高可到60%左右.当DO由2mg/L提高到3mg/L时,COD和氨氮的去除效果均有所提高,其中氨氮去除效果尤为明显,好氧区内的DO质量浓度最佳为3mg/L.控制溶解氧含量为3.0mg/L,当好氧区的HRT由12h降低为10h时,COD和氨氮的平均去除率均有所下降,因此好氧区的最佳水力停留时间应维持在10～12h.在不同的硝化液回流比下,A/O膜生物反应器对COD去除效果变化不大,而对总氮去除影响较大,得出此次试验硝化液的最佳回流比为3.0.:A/O;;(DO);(HRT);(r):TU992.3　　　:A　　　Hog-PenSewageWaterTreatmentbyA/OReactorNIUMingfen,LIZhuoping,ZhangDi,GeAndong,LIUZhiyuan(SchoolofMunicipalandEnvironmentalEngineering,ShenyangJianzhuUniversity,Shenyang,China,110168)Abstract:Anexperimentoftreatinganaerobicfermentedhog-pensewagewaterbyA/Oreactorwascarriedouttostudythelawofpollutionmatterremovalduringthecourseofcombineddomestication.Whentheex-perimentbegantostart,theparametersoftreatmentsystem,includingdissolvedoxygen(DO),hydraulicresi-dencetime(HRT),andrefluxratioofinternalrecycle(r),werechangedtostudytheefficiencyofatreat-ment.TheA/Oreactorfirstraninindependentstyle,theninunitedway,andthenafterfiftydaysenteredtherunningmode.TheexperimentalresultsshowedthatCODandNH3-NremovalratefromthesewagewatertreatedbyA/Oreactorwasstableat90%,whiletheTNat60%.WhentheDOvaluechangedfrom2mg/Lto3mg/L,theCODremovalratecouldbeadvanced,andtheammonia′sandnitrogen′smoreefficiency.IntheaerobicareathebestconcentrationofDOwas3mg/L.WiththisconcentrationtheaverageremovalratesofCODandammoniawoulddescendwhentheHRTvaluereducedfrom12hto10h,sothebesthy-draulicresidencetime(HRT)shouldbeat10h～12h.InthisexperimenttheA/ObiomembranereactorhadlittleeffectontheremovalefficiencyofCOD,buthighofnitrogenunderdifferentrefluxratioofnitrifyingliquid.Wefoundthatthebestrefluxratioofnitrifyingliquidis3.0.Keywords:A/O;hog-pensewagewater;dissolvedoxygen(DO);hydraulicresidencetime(HRT);refluxratioofinternalrecycle(r)27:A/O141　　　　,,20,,[1-3].,,.[4-7].,;-,[8-9].,51.3km2,,-A/O-,A/O.A/O,,:(DO)、(HRT)(r),,,.、.1　1.1　、A/O,120cm,15cm,14L,,5cm.100cm,10cm,7L,.1.,,,,.A/O,.,8L.、.1.;2.;3.;4.;5.;6.;7.;8.;9..1　A/OFig.1　A/Oexperimentaltestdevice1.2　(1),2200,120t,.,,,、,.,7.5m,180d,.,,.,1.0m,1.1　Table1　QualityofExperimentalWaterρ(COD)/(mg·L-1)ρ(NH3-N)/(mg·L-1)ρ(TN)/(mg·L-1)ρ(TP)/(mg·L-1)ρ(SS)/(mg·L-1)pH1000～1500500～700600～800150～2501500～25008.0　　(2),2∶1,,,3500mg/L.142　　()27,.(3)A/O.:O5,NH3-N80%,4,.O:6h,1h,1h,3mg/L.AOA.A:6h,1h,1h,0.15mg/L.25～30℃,28d.1.3　[10-11]COD:;NH+4-N:;NO-3-N:;(TN):;(TP):DO:DO;pH:pH;:.2　2.1　A/OCODNH3-N80%,,2∶1,12h,0.50m3/h.3～4mg/L.,,32d.2.1.1　CODA/OCOD2.A/O,COD1320mg/L,COD160～460mg/L,78%～96%,A/O17d,,,.COD400mg/L,A/OCOD;,,COD,.A/O,4800mg/L6200mg/L,A/O,[12-14].2　CODFig.2　ThechangesofCODininletandoutletwaterinA/Ounitedrunningstyle2.1.2　NH3-NNH3-N3.,NH3-N400～850mg/L,NH3-N,81%.NH3-N,COD400mg/L,NH3-N,NH3-N,;COD.3　NH3-NFig.3　ThechangesofNH3-NinA/Ounitedrunningstyle2.1.3　TNTN4.27:A/O143　　TN,58%,300mg/L,NO3-NNO2-N2/3,,:,;,.TN.4　TNFig.4　ThechangesofTNinA/Ounitedrunningstyle2.2　A/O[15-18]2.2.1　COD、NH3-NHRT6h,300%100%,SRT=12d,DO,.5.5　DOCODFig.5　CODandammonia-nitrogenremovalrateschangeunderdifferentDOconditions　　DOCOD,DO2mg/L3mg/L,COD,,DO.COD,DO,.DO3mg/L4mg/L,COD,DO3mg/L,DO,,DO,DO,.,DO3mg/L.2.2.2　COD、NH3-N　　3.0mg/L,CODCr3200mg/L,700mg/L,8、10、12h6.6　HRTCODFig.6　ThechangeofCODandammonia-nitrogenre-movalratesunderdifferentHRTconditions　　,HRT12h10h,COD,;HRT8h,COD,.,HRTCOD,HRTCOD.HRT10h,HRTCOD,,,10～12h.2.2.3　COD、NH3-N、TNA/O144　　()27,,.,,,;,,.,,1、2、3、4(7).7　COD、TNFig.7　ThechangeofCOD,andammonia-nitrogenre-movalratesindifferentHRTconditions　　7,1、2、3、4,A/OCOD,,TN,33.00%68.87%.34,TN,.,,A/OCOD,,3.0.3　　(1),50d,A/O,COD、NH3-N90%,TN60%,,.(2)DO2mg/L3mg/L,COD,.DO3mg/L4mg/L,COD,DO3mg/L,DO,.,DO3mg/L.(3)HRTCOD,HRTCOD,10～12h.(4),A/OCODNH3-N,,3.0.:[1]　,.[J].,2004,6(3):53-57.　(BianYousheng,JinDongxia.Studyontechniquesofpollutionpreventionandtreatmentoflivestockandpoultryfarmsinscale[J].EngineeringScience,2004,6(3):53-57.)[2]　,,.[J].,2008,34,(2):51-52.　(ChenHonghui,ZhuGuoxiang,YangJianhua.Envi-ronmentalpollutionandscientificmanagementonlargescalepigfarm[J].AgriculturalEquipmentTechnology,2008,34,(2):51-52.)[3]　,,.[J].,2003,16(6):218-220.　(LeiYingchun,ZhangKeqiang,JiMinetal.Ad-vanceofwastewatertreatmenttechnologyforscaledpigfarm[J].UrbanEnvironmentalUrbanEcolo-gy,2003,16(6):218-220.)[4]　ValleP.Wastemanagementsystemfora2400headswineoperation:Pilotscalestudy[J].PaperAmSocAgricEng,2001:89-93.[5]　,,.[J].,2004,25(1):49-54.　(WangShanfeng,ChenAnguo,WangHaifeng.Re-searchdevelopmentontechnologyoffecesandsew-agetreatmentinintensivescaledswinefarms[J].E-cologyofDomesticAnimal,2004,25(1):49-54.)[6]　,,,.[J].,2007,23(10):175-178.　(HuangQinlou,HuangXiusheng,ChenZhongdian,etal.Researchonthepollutionsituationofscalepigfarmsandwastecircularutilization[J].ChineseAg-riculturalScienceBulletin,2007,23(10):175-178.)[7]　,.[J].27:A/O145　　,2008,28(2):72-74.　(PanLuting,