高炉瓦斯灰曝气生物滤池填料的制备及其性能研究李善评

:2007-06-27:(1963-　),,,.Email:[e-mail]　:1671-9352(2007)11-0001-05李善评,张启磊,付敬,王兆祥(　,　　250100):以高炉瓦斯灰为主要原料、粘土和硅酸钠作为添加剂制备曝气生物滤池填料.通过正交试验得出高炉瓦斯灰曝气生物滤池填料的最佳制备工艺条件为:高炉瓦斯灰、粘土、硅酸钠质量分数分别为79%,15%,6%,烧制温度为600℃.该曝气生物滤池填料具有密度较小、强度较大、比表面较大等特点,将其应用于曝气生物滤池处理酱油废水,在水力停留时间为4h、气水比6∶1、滤层高度为100cm的情况下,COD的去除率达到70.3%,NH3-N的去除率达到74%,色度的去除率达到60%,取得了较好的处理效果.利用高炉瓦斯灰制备曝气生物滤池填料,为高炉瓦斯灰的资源化利用探索了一条新途径.:高炉瓦斯灰;填料;曝气生物滤池;酱油废水:703.1　　　:APreparationandperformancestudyoffiltermediamadebyblastfurnacedustforabiologicalaeratedfilterLIShan-ping,ZHANGQi-lei,FUJing,WANGZhao-xiang(SchoolofEnvironmentalScienceandEngineering,ShandongUniversity,Jinan250100,Shandong,China)Abstract:Filtermediaforabiologicalaeratedfilter(BAF)werepreparedwithblastfurnacedustasthemainmaterial,andwithclayandsodiumsilicateaschemicaladditives.Throughtheorthogonalexperiment,theoptimalpreparationconditionwasob-tained,whichis79%blastfurnacedust,15%clay,6%sodiumsilicateand600℃calcination.Thefiltermediahavethechar-acteristicoflowerdensity,highercompressionstrengthandlargerspecificsurface.SoysaucewastewaterwastreatedinBAFbyadoptingthiskindoffiltermedia.Whenthehydraulicretentiontime(HRT)is4hour,air-waterratiois6∶1,andtheheightoffiltermediais100cm,theremovalrateofCOD,NH3-Nandchromais70.3%,74%and60%,respectively.Thismethodin-corporatestheconceptofcirculareconomyandexploresanewpathwaytoutilizetheresourcesofblastfurnacedust.Keywords:blastfurnacedust;filtermedia;biologicalaeratedfilter;soysaucewastewater0　引言(),,SiO2Al2O3,[1].(biologicalaeratedfilter,BAF),,、[2],、、、,[3-6].,、、,,.,,　42　11　Vol.42　No.11　　　　　　　　　　　(　　)JournalofShandongUniversity(NaturalScience)　　　　　200711　Nov.2007　,.,,,,、[7].,,.,BAF,,BAF.1　实验部分1.1　,,80,JXA8800RISIS300,1,1;,,80;,,.1　Table1　Themaincomponentsandcontentsofblastfurnacedust(%)(%)Fe24.32S1.44O43.34Ca10.59Mg1.85Zn2.76Al8.42K1.90Si4.88Cl0.491　Fig.1　Theenergyspectrumoftheblastfurnacedust1.2　、、[8];[9];[10].(COD);(NH3-N);.1.3　,,、、,,,2,.2　Table2　Theresultsoftheorthogonalexperiment1234g100150200250(%)5101520(%)46810(℃)500600700800　　:　　10cm,140cm,100cm,,1.8Lh(4h),6∶1,25～35℃,:COD,325～375mgL,NH3-N,23～28mgL,250～400,pH7.0～7.5.,、COD、NH3-N.2　结果与讨论2.1　2,3.,:(1),A2B3C2D2,150,15%,6%,600℃.(2).,.,.,,、,,.　2　　　　　　　　　　(　　)42　3　L16(44)Table3　TheresultsoftheorthogonalexperimentsL16(44)A(g)B(%)C(%)D(℃)(m2·g-1)(kg·m-3)×1000111112.563896.82.858212223.153941.33.349313333.121955.13.268414442.048932.82.195521232.683889.83.016622142.476954.32.594723412.882927.03.107824323.192995.63.121931341.448839.41.7251032431.248864.71.4431133122.262990.42.2841234212.5271024.62.4661341422.918867.13.3651442312.327950.62.4481543241.972926.22.1291644132.337957.12.442K111.67010.96410.17811.960K212.9199.83410.9612.119K37.91811.86910.56210.169K410.38410.22410.1108.643k12.9182.7412.5452.990k23.2302.4592.7403.030k31.9802.9672.6412.542k42.5962.5562.5282.161R1.2500.5090.2120.8692.2　,,4.4　Table4　Theperformancecomparisonofthefourkindsoffiltermedia(g·cm-3)0.8590.9760.8301.375(g·cm-3)2.0982.2802.2002.550(%)54.5　　53.3　　50.0　　10.0　　(%)≤1.81　　≤1.62　　≤1.50　≤　1.00　　(MPa)2　　　3　　　5　　　5　　　(m2·g-1)3.84　3.99　0.46　0.88　　　、,、、,,.,,.、、,,,,,.(2),,,.,2MPa,1.81%,,.2.3　2.3.1　挂膜阶段2L,,.24h,0.05m3h.,,3d,,.4d　11,:3　　　　　、,1.8Lh(4h),6∶1,COD,COD,10dCOD60%,,,.4～10d3.2　Fig.2　TheSEMphotosoffiltermediasurface3　4～10dCODFig.3　TheCODconcentrationsoftheinfluentandtheeffluentfrom4to10daysaftermembraneformation　　,4.,,,.2.3.2　稳定运行阶段,1.8Lh(4h),6:1,、COD,NH3-N.1d16dCOD,NH3-N5、67.4　Fig.4　TheSEMphotosofmembrane5　CODFig.5　TheCODconcentrationsandtheremovalratesoftheinfluentandtheeffluentafterstableoperation　　5,16d,COD4d65%～67%,12d67%,67%,14d,70.3%,COD.6　NH3-NFig.6　TheNH3-Nconcentrationsandtheremovalratesoftheinfluentandtheeffluentafterstableoperation　4　　　　　　　　　　(　　)42　　　6,16d,NH3-N8d,8d74.4%,9d13d,71.2%～73.0%,14d,73%,NH3-N70%,.7　Fig.7　Thechromaandremovalratesoftheinfluentandtheeffluentafterstableoperation　　7,16d,71.4%,37.5%,7d55%,6d,7d,55%,.2.3.3　含盐量对酱油废水可生化性的影响COD,,,1.7%,BOD5COD0.3,.,,BOD5COD,5.5　BOD5CODTable5　TheeffectofsaltcontentonBOD5CODofsoysaucewastewater(%)BOD5COD2.00.302.50.273.00.233.50.214.00.19　　5,2.0%,BOD5COD0.3,,,BOD5COD,,4.0%,.,,,,、.2.0%.3　结论(1)、79%,15%,6%,600℃、;.(2),COD70.3%,NH3-N74%,60%,.(3),、、,,.(4),2.0%.:[1].[J].,1998,11(2):55-58.[2]ABEYSINGHEDH,SHANALEHA,RIGDENB.Biofiltersforwaterreuseinaquaculture[J].WatSciTech,1996,34(11):253-260.[3],,.[J].,1999,20(9):69-71.[4],,,.Fenton—[J].,2006,26(11):28-31.[5],,,.[J].,2006,7(11):138-141.[6],,.[J].,1999,20(04):83-85.[7],.[J].,2002,33(5):7-9.[8].,(GB2842-81)[S].:,1981.[9],(CJT43-2005)[S].:,2005.[10],.[M].:,1997:189-191.(编辑:胡春霞)　11,:5