您好,欢迎访问三七文档
当前位置:首页 > 行业资料 > 其它行业文档 > Ca2及PO43共存时对微生物絮凝剂絮凝的影响黄卫红
InfluenceofCa2+andPO43-coexistenceontheflocculationcapacityofbioflocculantHuangWeihong,XiongJinshui,LiuBinbin,YanYongsheng(SchoolofEnvironmentalEngineering,JiangsuUniversity,Zhenjiang212013,China)Ca2+PO43-,,,(,212013)[],Ca2+PO43-,Ca2+,PO43-,Ca2+、PO43-。,Ca2+PO43-88%,pH。,Ca2+PO43-、、77%,、54%,。,。,Ca2+、PO43-。[];;[]TQ314.253;X703.1[]A[]1005-829X(2009)05-0043-04Abstract:Kaolinsuspensionwithoutaddingbio-flocculantbutonlyaddingtheflocculationprecipitateofvariousCa2+containingcompoundsolutionsandvariousPO43-containingsaltsolutionhasbeeninvestigatedtostudytheinfluenceofthetwoinorganiccompoundontheflocculationcapacityofbioflocculant.Itisfoundthatunderneutraloralkalineconditions,theeffectoftheexistencereactionofCa2+andPO43-ontheflocculationrateproducedbykaolinsuspensionisover88%.ItincreaseswiththeincreaseofpH.WastewaterflocculationtestsshowthattheeffectofthecoexistencereactionofCa2+andPO43-ontheflocculationrateofmudwastewater,carboninkanddomesticsewageareallover77%.Buttheeffectontheflocculationrateofoxide-richpoolwastewater,andpaper-makingwastewaterislowerthan54%anditsflocculantcharacteristicispoor.Attheend,thereactionprincipleoftheflocculatingreactionofthecoexistenceoftwokindsofionsisdeduced.Itisconcludedthatpolynuclearpolymeristhechemicalformingreasonofkaolinsuspensionflocculatingprecipitation.Keywords:bioflocculant;flocculatingsystem;cationicpolymer,、、、〔1-3〕。、、、、〔4-6〕。,:pH、〔7-8〕。CaCl2(1%)K2HPO4(0.5%)KH2PO4(0.2%),pH。Ca2+,PO43-〔9〕。,。11.11.1.1722,;Ca2+():CaCl2、CaO、CaCO3、Ca(OH)21.0000g(0.0003)150mL,100mL,、,,29520095IndustrialWaterTreatmentVol.29No.5May,200943——2009-05,29(5)。Ca2+Ca2+(0.49mol/L);PO43-():Na2HPO4、Na3PO4、NaH2PO4、K2HPO4、KH2PO40.2000g(0.0002)150mL,100mL,、,,。PO43-0.011mol/L,PO43-(0.043mol/L)。1.1.2:0.4000g150mL,100mL,4g/L。:。:。:100mL。。1.2150mL100mL4g/L,,2mL、,5min,3min,10%NaOHpH,5min。722550nmOD550,B,OD550,A。:=A-BA×100%(1):A———;B———。1.31000mL48h6500r/min20min,50mL1∶4200mL,8000r/min20min,、31000mL。22.1CaCl2〔7〕K2HPO4、KH2PO4pH7CaCl2,。pH=7.5,CaCl2PO43-,。1。1,CaCl2,,88%。,pH,;pH,。2.2Na2HPO4pH7.5,Na2HPO41。1,CaCO3,Na2HPO4,CaO、Ca(OH)2pHNa2HPO4。。:CaCO3Ca2+,〔6〕Ca2+,;CaO、Ca(OH)2,pH。2.3MBF22mL(MBF)、Na2HPO4、CaCl2。2,MBF,80%,Ca2+MBF,,Ca2+。MBF、Ca2+、PO43-,,98%。,CaCl260%,PO43-。1CaCl2OD550/%Na2HPO40.07389.5NaH2PO40.07589.2K2HPO40.07888.8KH2PO40.07090.0Na3PO40.07589.2806040200CaCl2CaOCaCO3Ca(OH)2/%1Na2HPO444——2009-05,29(5)Si—OH,,,,,。2.4pHCaCl2KH2PO4pHCaCl2KH2PO43。3,pH。pH6.5,60%,pH,pH8,90%。,Ca2+PO43-。2.5、、、、CaCl2KH2PO42mL,pH=7.5。2。2,CaCl2KH2PO4、、,、,,。。2.6Ca2+PO43-〔8〕(2.2),CaCl2pH,80%。,pH9.0,CaCl2,OD5500.114,Na2HPO4,OD5500.068,90%。CaCl2Ca(OH)2,PO43-。Al3+Fe3+--〔10-12〕,pH7.0:Ca2++H2O葑CaOH++H+2Ca2++2H2O葑Ca2(OH)22++2H+Ca2++3H2O葑Ca(OH)3-+3H+Ca2++4H2O葑Ca(OH)42-+4H+Si—OH,Ca2(OH)22+:Si—O—Ca—O—Si。OH-,(SO42-、PO43-),OH-,OH-,:Ca2++H2PO4-葑CaH2PO4++H+Cu2+、Pb2+-〔13-14〕,Ca2+PO43-pH7—OH,。3,CaCl2,pH,Ca2+PO43-,。,,、、。,:1008060402005678910pH/%3pHCaCl2、KH2PO42OD550OD550/%0.2090.02289.5,0.9590.44253.90.3780.19747.9,,1.4860.27281.7,>20.459>77100806040200MBF+PO43-CaCl2MBF+CaCl2MBFPO43-PO43-+MBF+Ca2+/%2,:Ca2+PO43-45——2009-05,29(5)(1)PO43-,CaCl2,pH。(2),,。(3)Ca2+PO43-,。[][1],,,.[J].,2001,24(3):28-31.[2],,,.[J].,1995,35(2):121-127.[3]LevyN,AssisM.Physico-chemicalaspectsinflocculationofben-tonitesuspensionsbyacyanobacterialbioflocculant[J].WaterResearch,1992,26(2):249-259.[4],,,.[J].,2004,14(1):72-74.[5],.[J].,2005,17(2):14-16.[6]SalehizadehH,VossoughiM,AlemzadehI.Someinvestigationsonbioflocculantproducingbacteria[J].BiochemicalEngineering,2000,5(1):39-44.[7],,.Ca2+[J].:,2006,22(6):41-43.[8],,,.[J].,2007,23(2):81-83.[9],,,.GA1[J].,2007,27(7):1157-1162.[10],,.[J].,2007,19(2):205-211.[11],.[J].,1995,14(4):329-336.[12]AtkintonRJ,ParfittRL,SmartRSL.Infraredstudyofphos-phateadsorptionongoethite[J].J.Chem.Soc.,1974,7(1):1472-1479.[13],,,.()[J].,2000,20(3):19-22.[14],,,.[J].:,2007,22(2):115-118.[](1968—),1990,,。:0511-88790931,E-mail:whuang630@ujs.edu.cn。[]2009-01-21()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!,90%;Hg2+4×10-2mol/L,900mg/g;,。。。[][1],,,.[J].,2007,27(4):9-12.[2],,,.[J].,2007,27(2):135-138.[3],,.[J].,2004,24(8):5-8.[4],,,.[J].,2005,56(10):1907-1911.[5],,.[J].,2007,30(6):6-7.[6],,,.[J].,2004,20(2):184-192.[7],,.[J].,2007,27(3):7-9.[8]ChuKH.Removalofcopperfromaqueoussolutionbychitosaninprawnshell:adsorptionequilibriumandkinetics[J].JournalofHaz-ardousMaterials,2002,90(1):77-95.[9]BurkeA,YilmazE,HasirciN,etal.Iron()ionremovalfromsolutionthroughadsorptiononchitosan[J].JournalofAppliedPoly-merScience,2002,84(6):1185-1192.[10]DhakalRP,InoueK,YoshizukaK,etal.SolventExtractionofSomeMetalIonswithLipophilicChitinandChitosan[J].SolventExtraction&IonExchange,2005,23(4):529-543.[11],,,.Eu()[J].:,2000,22(3):209-212.[12],,,.--[J].,2000,89(2):24-26.[](1972—),2002,,。:027-63372336,E-mail:xxgyy@hotmail.com。[]2009-01-15()(26)46——
本文标题:Ca2及PO43共存时对微生物絮凝剂絮凝的影响黄卫红
链接地址:https://www.777doc.com/doc-6531098 .html