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FLYASHCOMPREHENSIVEUTILIZATION 2010 NO.6掺加粉煤灰的污泥沉降浓缩效果与利用*ThickeningPropertyandUtilizationofSewageSludgeModifiedbyflyash苏柳铭,岳燕飞,陈 伟,黄义雄,钱觉时(,400045) :,,。,5%,60%,80%,;。 :,,, :X703 :A :1005-8249(2010)06-0019-04SULiuming,YUEYan-fei,CHENWei,HUANGYixiong,QIANJueshi(CollegeofMaterialScienceandEngineering,ChongqingUniversity,Chongqing400045) Abstract:Toimprovethickeninganddewateringpropertiesofsewagesludgeisbeneficialtodisposalandutilization.Theinfluenceofflyashonsludgesettlementwasinvestigatedexperimentally.Itisshownthatthemoisturecontentofdewateredsludgewithflyashdosageof5%was60%,whichisfavorforitssubsequentprocessinganduse.Thedewateredsludgemodifiedbyflyashcanbeusedasrawmaterialstoproduceceramsite.Keywords:flyash,settling,thickening,ceramsite*(200738)(CSTC2007AB7043):2010-10-20 ,、、、,SiO2、Al2O3Fe2O3。,,Freundlish,,、、Al2O3。、、,,,[1]。,。95~97,,、80%。,80%4,4~5[2]。,。[3-4],,[5]。,,,。80%,,,,,。,、,、,[6-7],。1 1.1 原材料,·19· 2010 NO.6 FLYASHCOMPREHENSIVEUTILIZATION ,98%。1。,2。1 /%pHLOISiO2Al2O3Fe2O3K2O6.9699.4339.5030.4311.174.771.512 /%SiO2Al2O3Fe2O3CaOMgOTiO2SO3Loss50.2825.5413.253.20.8--3.341.2 试验方法(1) 3min,,,,;(2) ,,。TDL80-2B,2000r/min,15min。、、;(3) 、、、,400℃,15min,1150℃10min2 2.1 粉煤灰对污泥沉降浓缩性能的影响2.1.1 1 1,,,。,、,,。,。,,,,,,,;,,、,,。,,,,,。80%50%,15%,4%~17%,,。,,。,。1,5%,,5%,,,5%。2.1.2 3 /%/%051015928376703,,,5%,83%,,,,,。2.1.3 pH·20· FLYASHCOMPREHENSIVEUTILIZATION 2010 NO.64 pH/%051015pH7.898.038.188.414,,pH。,CaO、MgO,,pH[8]。[9],pH,pH8.0;pH10.7~10.8。2.1.4 COD2 COD2,,COD;≥10%,,。[10]SiO2Al2O3,,,,,、,,,,,Si-O-Si、Al-O-Al,-,、、。,,COD,COD。2.2 粉煤灰对污泥脱水性能的影响2.2.1 ,,70.5mL,71%,1.152×1012m/kg,1×1012m/kg,,,。,,,。3 3,,,10131011,。,,,,。,,,。2.2.2 5 /%/%05101577605043、,[11]。,95%90%,[12],。5,5%,60%,80%,、。2.2.3 ,,,,。,·21· 2010 NO.6 FLYASHCOMPREHENSIVEUTILIZATION ,。6 /%/%05101502250686,,;5%,22%,,,。2.2.4 pH7 pH/%051015pH8.208.408.849.16pH,15%,pH1,CaO、MgO,,,,,pH。3 污泥粉煤灰混合物制备陶粒5,,95%90%,。,,,。,,。,SiO2、Al2O3Fe2O3,。,,,。,,。,,Fe2O3,。。5%,、,、、、。1800N,1400kg/m3,1h10%。,,,。5%,15%,。8。8 /kg/m314009001h/%1015/N1800470 [1] ,,,.[J].,2004,26(5):124~127.[2] ,.[J].,2002,28(2):35~36.[3] ,,,.[J].,2005,(3):40~44.[4] ,,,.:,CN101186485A[P].2008-05~28.[5] ,,.[J].,2006,(1):45~48.[6] ,,.[J].,2010,38(7):1247~1252.[7] ,,.[P].:200810232910.7,2009-03-11[8] ,,.[J].,2006,17(3):141~142.[9] ,,.[J].,1999,30(3):1~3[10] ,.[J].,2006,(6):21~23.[11] ,,..,2010,(1):81~84.[12] ,,..[J],2007,16(2):667~671.·22·
本文标题:掺加粉煤灰的污泥沉降浓缩效果与利用苏柳铭
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