改性聚丙烯填料水处理性能试验研究路远

2　11环境工程学报Vol.2,No.11200811ChineseJournalofEnvironmentalEngineeringNov.2008路　远　孙力平　衣雪松　吴　立　袁忠伟(,300384)　　-,、、。,,,,,46.7%,8.84%。,。　　　　X703　　　A　　　1673-9108(2008)11-1457-04ExperimentalstudyonwastewatertreatmentperformanceofmodifiedpolypropylenemediaLuYuan　SunLiping　YiXuesong　WuLi　YuanZhongwei(DepartmentofEnvironmentalandMunicipalEngineering,TianjinUrbanConstructionInstitute,Tianjin300384)Abstract　Thetechnologyofchemicaloxidation-surfacecoveredwithironionwasusedtomodifythenatureofcommonpolypropylenemedia,thecharactersofmediawerecomparedwithmodifiedmediaaboutbiologyhy-drophilicity,surfacecharacteristic,criticalsurfacetensionandmembranceforminginsimulativewastewatersys-tem.Theresultshowsthatthecharacteristicsofhydrophilicityandthedegreeofsurfacegeanulationhavebeenenhancedgreatly,thecriticalsurfacetensionofthesuspendedmediahasbeenincreased,surfaceelectricityispositive,thespeedofmembranceformingisincreasedby46.7%,thefinalremovalrateofNH+4-Nisincreasedby8.84%.Modifiedmediahasabetterwastewatertreatmentperformance.Keywords　modifiedmedia;membranceforming;biofilmprocess:(04227):2008-03-14;:2008-03-30:(1983～),,,。E-mail:[e-mail]　　,,。[1]。,。:、(、、)、。、、,、、。,、。,。,,、,,。1　1.1　LF。:38mm,300m2/m3,0.86m2/m3,0.96,1。1.2　-[2]。:,,,,。Liu[3]X21　Fig.1　Experimentalsuspendedmedia(XPS),PE、PS、PPPVC。,,。Liu[4],Fe/C0.05,。:(0.1～0.5mol/L)1h,,;0.1mol/L0.5h,,。,,。1.3　,,、,,。1.3.1　填料含水率的测试、。。:2,24h,3、6、9、1215h。。,5。,。1.3.2　填料的表观特征。,。,。1.3.3　填料的临界表面张力测定JT-82Zisman[5],。1.3.4　填料生化特性的测试。2。190mm,240mm,5L,2。2　Fig.2　Experimentalequipment,:COD600mg/L,NH+4-N40mg/L,PO3-4-P8mg/L,Na2CO3100mg/L,MgSO44.48mg/L,CaCl22.56mg/L。[6]。,240%,。,,24h,。,,。,,,。2～3mg/L,20～24℃。12h:11h,50min,10min。COD。。2　2.1　24h145811　:,3。0(5.74%)0(3.89%),,。,,,,,,,。3　24hFig.3　Comparisonofpackingmoistureafter24himmersion2.2　,,,。,(45)。,,,。,,,,、。,。4　Fig.4　Surfaceofusualpacking5　Fig.5　Surfaceofmodifiedpacking。2.3　,1,cosθ～σL,cosθ=1,(6)。1　Table1　Surfacetensionofseveralkindsofliquidandcontactangleonsuspendedmedia(×10-3N/m)θ(°)177.59548272.88841363.47828447.756-532.026-6　ZismanFig.6　CriticalsurfacetensionofsuspendedmediabyZismanmethod,,27.2×10-3N/m1459256.3×10-3N/m,。2.4　,3d,,,,COD37.4%,7d。,,,。COD7。COD5d81.54%,,COD80%,8d,,13dCOD80%,15d,。7　CODFig.7　CODremovalduringmembraneforming,,8d,15d,46.7%;,,。2.5　,。8。,4d,4d53.26%,8d,,11d71.26%,70%,。13d,14d。,,70%,65%,。,,。8　Fig.8　NH+4-Nremovalduringmembraneforming　　,8.84%。3　　-:;,,;27.2×10-3N/m56.3×10-3N/m;,,46.7%,,;8.84%。,。[1],,,.MUCT.,2006,37(6):8～11[2],,,..,2006,35(4):41～45[3]LiuY.Adhesionkineticsofnitrifyingbacheriaonvariousthermoplasticsupports.ColloidsandSurfacesB:Biointer-faces,1995,5:213～219[4]LiuY.Agrowthyieldmodelforsubstrate-sufficientcontin-uouscultureofmicroorganisms.EnvironmentalTechnol.,1996,17:649～653[5]D.Stats,..:,1994.3～12[6]..:,1997.185～1911460