粉煤灰在处理造纸废水中的应用

　2003-02-08　　UsingofCoalAshintheTreatmentofPaperMakingWastewater王武名　于晓彩　单连斌　王恩德　(东北大学资源与土木工程学院　沈阳　110004)　参考国内外有关粉煤灰处理造纸废水的资料,综合分析讨论了粉煤灰处理造纸废水的机理、工艺流程和处理效果。　　　　　Abstract　Thispaperconsultedalotofinformationontheusingofcoalashinthetreatmentofpapermakingwastewater,andgenerallyanalyzedanddiscussedthemechanism,technicalflowandeffectofusingcoalashtotreatpapermakingwastewater.Keywords　CoalAsh　PaperMakingWastewater　Adsorption　Coagulation　Modify1　,,,。3〔1〕:(1),,,,(2700～3500cm2/g),Al、Si,,,。(2)SiO2、Al2O3、Fe2O3,85%。CaO、MgO,。1〔2〕36,,Fe、Ca、Mg,A1,,。,,。(3),,,,,,,,。、SiO2,SiO2,。1　/%SiO2Al2O3Fe2O3CaOMgO50.627.27.02.81.233.9～59.716.5～35.41.5～15.40.8～10.40.7～192　,。2.1　,()。。(1):,,,。,。〔2〕,,65%。—24—　29　118　20038,,、,。,,,。,,。(2):,。,,,,,。,5%,COD43.7%,49.3%。,COD76.9%,。,,,,。,。(3):,,。,。,。,〔3〕。1。3.7t,COD,BOD5,Zn、SS69.0%,81.7%,93.7%51.3%。。2t,CODcr,BOD5,SS,75.2%,84.3%,61.4%,88.3%。,,390%,TOC56%,BOD518%。,,。,,。,。,,。,〔4〕。※　　　　　※※※※1　2.2　,,,。(1):,,。。,。,〔5〕,COD72%,SS97%,COD42%,SS47%。,。〔6〕,CODCr20.8%,19%,pH5.0CODCr18.7%,14.3%。、。,、、,,。,CaO、MgO、K2O,,。(2):()。,,(SS),,,。(),,。,。,500mg/L,20%,50%,—25—　,。,:,,。,,,。、〔7〕、、,,CODCr57.1%～67.2%。2.3　:。〔8〕,。:,,,。,,20g/L。,,,15min。Al2(SO4)、FeCl3、H2SiO3、AlCl3、Fe2(SO4)3、H2SiO3,。、。,Na0H。3〔9〕:;,,NaOH;,NaOH。F,NaOH,773K,1h,,,12h,,373K。、,,。,NaOH,,。,。,。,、,,,。。3　,,,,。,,,,。。,:、,。,。　　　1.,,.〔J〕..1998,2:27～30.2.,.〔M〕.:.1997.3.,,.〔J〕.,1993(6).4.,..〔J〕.1997,9(2):27～28.5.,,.COD.,1992(2).6.,,.〔J〕..2001,4:20～22.7.,.〔J〕..1997,l:9～11.8.,,.〔J〕..2000,1:24～25.9.,,.〔J〕..2000,4:38～41.—26—　29　118　20038