磁性细菌生物法处理屠宰废水

,,,,,(,150001):,,,15min;,,,CODSSNH3-N96%91%86%,,:;;;;:X703.1:C:1000-4602(2005)07-0036-03BiologicalProcesswithMagneticBacteriaforSlaughter2houseWastewaterTreatmentZHANGMi2lin,RENYue2ming,LIKai2feng,WANGJun,CHENZhao2bo,HOUZhi2yao(SchoolofChemicalEngineering,HarbinEngineeringUniversity,Harbin150001,China)Abstract:Anewbiologicalprocessofbacteriamagnetizedbymagneticnano2materialwasusedforslaughter2housewastewatertreatment.Intheprocess,themixedliquidofmagneticandflocculatedsludgecanbeseparatedquicklyandeffectively,withsedimentationtimeonly15min.Magneticfieldandmag2neticmaterialenhancethemetabolismoforganism,augmentthesludgeactivity,andimprovethewastewatertreatmenteffect,andtheremovalrateforCOD,SS,andNH3-Nisaveragedat96%,91%,and86%respectivelyandtheeffluentqualitysurpassesthedischargestandard.Theprocesshashighercapacityinresistancetoshockloadingandwillbewidelyappliedinfuture.Keywords:slaughter2housewastewater;magneticbacteria;magneticnano2material;mag2neticseparation;biologicalprocess,,,1111,20m3/d,,15,,1:pH=7.2,COD=1800mg/L,BOD=900mg/L,SS=500mg/L,(GB1345792)1Tab.1CharacteristicsofwastewaterpH/COD/(mgL-1)SS/(mgL-1)NH3-N/(mgL-1)6.97.14006001000250035060010020011216321720057CHINAWATER&WASTEWATERVol.21No.7Jul.20051Fig.1Flowchartoftreatmentprocess,,,,,,,,:0.2h1.0h4.04.5h15min1.0h,,,113:5065pH1113,114Fe2+Co2+Fe3+,,,1015nm;,3060min,6080700r/min2.06.0h,,,114BODNP10051,24h,,30d,2211CODSS,COD16002400mg/L,COD80mg/L,COD96%;SS543mg/L,SS48.5mg/L,SS91%,,,,,CODSS,,30d,CODNH3-N2300105mg/L,CODNH3-N6114mg/L,SS37.5mg/L,(GB1345792),,COD19002350mg/L(),COD96%,,21222CODFig.2VariationofCODremovaleffectwithdepositiontime,60minCOD85%,COD;15min,COD94%SBR,45min,COD9%,,2.03.0h737,:212131/251/201/151/101/5,520253515min,CODSS,343CODFig.3VariationofCODremovaleffectwithmagneticmaterialquantity4SSFig.4VariationofSSremovaleffectwithmagneticmaterialquantity34,,CODSS,1/15CODSS:,,(),CODSS;,,,5COD70%,SS73%;35CODSS72%75%,,,20253,,,,,,Fe3O4,,,,,,,4,,,1.0h15min,,,1/152025,CODSSNH3-N96%91%86%:[1],.[J].,2001,27(1):50-52.:[phone]E-mail:[e-mail]:2005-03-2883721