单级生物接触氧化法去除海水养殖废水中的无机氮廖绍安

廖绍安1,王安利1,黄洪辉2,郑桂丽3,韩舞鹰4(1,,510631;2,510300;3SchoolofMedicine,UniversityofMaryland,Baltimore,MD21201,USA;4,510301):利用在填料上人工接种微生物组成的浸没式生物接触氧化单级处理系统对养殖废水进行净化,效果良好。在试验水体体积与处理系统体积之比约为100∶1的情况下,对氨氮、亚硝酸盐氮、硝酸盐氮起始质量浓度分别为4.0mg/L、1.76mg/L、800mg/L,COD质量浓度为16.33mg/L的养殖废水进行处理,发现处理系统中进行着强烈的硝化和反硝化作用:处理30h,氨氮质量浓度下降并一直保持在0.1mg/L;亚硝酸盐氮浓度48h内,前6h从1.76mg/L短暂上升到2.24mg/L,然后持续下降,最低到0.22mg/L;对硝酸盐氮的反硝化作用能力也很强,经48h处理,硝酸盐氮质量浓度从800mg/L下降到180mg/L。根据对处理过程中的水质测定,浸没式生物接触氧化单级处理试验系统具有较强的生物脱氮能力。:海水养殖;无机氮去除;生物接触氧化:2008-01-26;:2008-02-16:(2007BAD29B06);(2007A032600004);(2006D90204005);(2007-5):(1970—),,,:。E-mail:[e-mail]:(1957—),,,,:。E-mail:[e-mail]　　,75%～80%[1],、[2],,[3]。,。,,。,,[4-6]。,,。,,,,。,。,,,。—、、[7],。,,,,。,。1　1.1　:ECO-MARINE,,MPN109cfu/g,1《》2008351　108cfu/g,7.0×109cfu/g。:、、、、(1)。1Tab.1Mainparametersofmediainthetreatmentsystem(m2/m3)1024720650430530(m3/m3)0.970.800.660.710.63(kg/m3)11521120800740:1L0.1g(NH4)2SO40.05gNaNO2,ECOMA-RINE,3d,1L14L,(NH4)2SO4NaNO2。,2.0L、1.0L、1.0kg、1.0kg、0.5kg。3d,3∶1,,15∶1。,1,2mg/L0.5mg/L,(NH4)2SO4NaNO2,。1.2:1m3,,COD16.33mg/L、4.0mg/L、1.76mg/L、pH7.55。:ECO-MARINE10g,,;(14cm×15cm×45cm),。:2cm;2cm;3cm;2cm;3cm;3456,300mL/s450mL/s,5、62L。,25L/min(1)。:、、CODpH,6h18h。,-,,COD,pHpHS-3CpH。1Fig.1Dirgramofexperimentalsystem22.1CODpHCODpH2。COD14.51～18.17mg/L,,,。pH,。pH4,12h,18h,6h。2CODpHFig.2ChangesofCODandpHinwastewater2《》2008351　2.2,,0.1mg/L(3)。,。6h、6～12h、12～30h,283mg/h、150mg/h、72mg/h;18h0.1mg/L。9.45L,1∶100,。,1.76mg/L,6h2.24mg/L,,,。,52mg/h(3)。2.3,(4),。12h,,180mg/L。。800mg/L180mg/L48h,100∶1,。3,,(COD1000mg/L),NH4+-N、NO2-N[8-10]。,1/10,,[11],,[12]。、、、[13]。,。[14];3　Fig.3Concentrationchangesofammoniaandnitriteinwastewater4　Fig.4Concentrationchangesofnitrateinwastewater,,[15];,[6]。,;,,。14cm×15cm×45cm,9.45×10-3m3,1m3。,,283mg/h153mg/h,。,pH,3《》2008351　,pH7.31～7.55。,、pH,,3,。,,,pH,。,,,。◆[1],.[J].,2003(5):25-27.[2],,,.[J].,1999(1):15-17.[3],,,.N、P[J].,1997,8(5):541-544.[4],　,　.[J].,2005,32(2):33-35.[5],,　,.[J].,2007,34(4):19-21.[6],,　.[J].,2007,34(1):1-4.[7].[J].,2000,16(2):25-28.[8],,,.[J].,2000,18(2):10-11.[9],,.[J].,1999,15(7):55-56.[10],,,.[J].,2000,32(2):172-174.[11],.[J].,1999,20(3):85-88.[12],.[J].,2000,1(3):55-60.[13],,,.[J].,2000,16(6):24-25.[14],.CODNH3-N[J].,1997,12(1):45-50.[15]NIJHOFM.Bacterialstratificationandhydraulicloadingeffectsinaplug-flowmodelfornitrifyingtricklingfiltersappliedinre-circulatingfishculturesystems[J].Aquaculture,1995,134:49-64.Removalofinorganicnitrogenfrommarineaquaculturewastewatercirculatedbysingle-stagebiologicalcontractoxidationLIAOShao-an1,WANGAn-li1,HUANGHong-hui2,ZHENGGui-li3,HANWu-ying4(1KeyLaboratoryofEcologyandEnvironmentalScienceinGuangdongHigherEducation,CollegeofLifeScience,SouthChinaNormalUniversity,Guangzhou510631,China;2SouthChinaSeaFisheriesResearchInstitute,CAFS,Guangzhou510300,China;3SchoolofMedicine,UniversityofMaryland,Baltimore,MD21201,USA;4SouthChinaSeaInstituteofOceanology,CAS,Guangzhou510301,China)Abstract:Inthispaper,inorganicnitrogenwasremovedfromaquaculturewastewaterbybiologicalcontractoxidationsystemafterinoculationofbacteriaonmedia.Thetreatmentsystemof9.45Ltreated1m3aquacul-turewastewaterbycirculation,inwhichinitiativeconcentrationsofTAN,nitrite,nitrateandCODare4.0mg/L,1.76mg/L,800mg/Land16.33mg/L,respectively.TheconcentrationofTANdecreasedto0.1mg/Lafter30hours;ofnitriteincreasedto2.24mg/Linpre-6hoursthendecreasedto0.22mg/Linlate42hours;ofnitratedecreasedto180mg/Lin48hours.Theresultsshowedthatthetreatmentsystemhadmarkedlyabilityofnitrificationanddenitrification,andhadabilityofsingle-stagedenitrification.Keywords:marineaquaculture,removalofinorganicnitrogen,biologicalcontractoxidation4《》2008351