复合型微生物絮凝剂的絮凝条件优化

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OptimizationoftheflocculantingconditionsofcompoundmicrobialflocculantZhaoDongfeng,LiuJie,ZhangYunbo,LiuQiyou(CollegeofChemistryandChemicalEngineering,ChinaUniversityofPetroleum,Qingdao266555,China),,,((),266555)[]5。15,:30℃,pH=9,60μL,20r/min,6min,1mol/LCa2+。[];;[]X703.1[]B[]1005-829X(2010)04-0066-03Abstract:Fivekindsofflocculant-producedstrainswhichhavehighflocculatingcapacityhavebeenobtainedfromactivatedsludgeandsoil.ThecompoundmicrobialflocculantwhichisformedbycompositingandcultivatingStrain1andStrain5arestudied.Theoptimumflocculatingconditionsareasfollows:temperatureis30℃,pHis9,floccu-lantdosageis60μL,theslowlystirringspeedis20r/min,theslowlymixingtimeis6min.Theadditionof1mol/LofCa2+tothewastewatercouldincreasetheflocculationcapacityofthebio-flocculant.Keywords:compoundmicrobialflocculant;petrochemicalwastewater;wastewatertreatment,(、、),,。,〔1〕。(CMF)〔2〕。,,,,〔3〕。,,。,,。11.11.1.1,。1.1.2(1L):5g,10g,NaCl5g,pH7.4~7.6。(1L):20g,(NH4)2SO40.2g,0.5g,KH2PO42g,K2HPO45g,0.5g,NaCl0.1g。1.1.3。1.1.4721,UV2100[](06A0302)30420104IndustrialWaterTreatmentVol.30No.4Apr.,201066——2010-04,30(4),DBJ-623,COD,。1.21.2.1CMF5,1~5。5(1∶1)〔4〕,,15。,2(Bacillussp.)。15,。1.2.2CMF500mL300mL,0.9mL,。60μL,200r/min2min,20r/min6min,10min,。、COD,、COD。1.2.3CMF、pH、、、。22.1CMF,,。1。1,,。,,,,〔5〕。,300mL60μL,0.2mL/L,。2.2pHpH,,。2。2,pH50,pH3.5~5、60%~85%,,,。,。2,pH。pH,,。pH,,,。pH9。2.3,,。3。3,。,,,;,,,。,20r/min。2.4,,:67——2010-04,30(4),。4。4,,>7min。4min,,,,。>6min,,,,。,6min。2.5,,。5。5,,,,,;,、DNA,,。,30~35℃。2.63mL1mol/L,,。6。6,Zn2+,,。6,Fe3+,Fe3+,。Al3+,,,。Na+,K+。,Ca2+、Zn2+,Zn2+,Ca2+。3。:60μL;pH9;20r/min;6min;30℃;Ca2+。,。、。,。,。[][1],,.[J].,2006,22(1):36-39.[2],.[J].,2003,19(4):1-4.[3],,,.[J].,2006,28(5):356-360.[4]KuraneR,MatsuyamaH.Productionofabioflocculantbymixedculture[J].Biosci.Biotechnol.andBiochem.,1994,58(9):1589-1594.[5],,.[J].:,2002,32(4):413-416.[](1968—),2004,,,。:13905460127,E-mail:zhaodf@vip.sina。[]2009-12-01()68——

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