分形理论在难沉降煤泥水澄清药剂选择中的应用王永田

3512Vol．35No．12201012JOUＲNALOFCHINACOALSOCIETYDec．20100253－9993201012－2116－051211.2211162.221116。K+、Na+、Ca2+332.01、1.942.41。、、332.18、2.412.633。TD94A2010－09－213080111969—。[e-mail]heoryonflocculantchoiceofdifficultclarifiedcoalslurryWANGYong-tian1ZHANGMing-qing2LIUJiong-tian11.SchoolofChemicalEngineeringandTechnologyChinaUniversityofMining＆TechnologyXuzhou221116China2.SchoolofEnvironmentScienceandSpatialInformaticsChinaUniversityofMining＆TechnologyXuzhou221116ChinaAbstractTheflocculationtestsondifficultclarifiedcoalslurrywereconductedandthefractaldimensionsofflocswerecalculated．Theresultsshowthatfractaldimensionsaresignificantlycorrelatedwiththeaveragesedimentationrateofturbid-waterinterfaceandlighttransmittanceofsupernatantsoitcanbeutilizedasavisualizedindexforcoalslurryflocculationefficiencyinlabtests．TheeffectofK+、Na+、Ca2+respectivelyonfractaldimensionwerestudied．TheresultsshowthatfractaldimensionincreasesfirstthendecreaseswiththeincreaseofK+、Na+、Ca2+concentra-tionrespectively．Themaximumfractaldimensionis2.011.94and2.41respectively．Basedonthistheeffectsofthreekindsofregentsystemonflocsfractaldimensionwerestudied．TheywerelongmacromolecularflocculantaloneCaCl2andlongmacromolecularflocculantCaCl2shortmacromolecularflocculantandlongmacromolecularflocculanttogether．Theresultsshowthatmaximumhighestfractaldimensionis1．712．41and2．63respectively．Sothethirda-gentsystemhasbesteffect．Keywordsfractaltheorydifficultclarifiedcoalslurryregentsystem。。“”1。、、、。fractaltheory2060、122。。。3－4、SiO2。5－7。、8。。9、10。。。3K+、Na+、Ca2+、、3。11.1、0.036mm。。NaCl、KClCaCl2。5008000.05%。1.2ZＲ4－6。15g/L200r/min1min10min。5cmUV－2602。15g/L、、。15g/L200r/min0.5min。200r/min0.5min10min。WV－CP240/G。1.3J.Gregory11。A=αLDf1AαLDf。1lnA=DflnL+lnα22LAlnAlnLDf。22.1、。、pH、、、。。12。7112201035。13。4mg/L0、2、4、6、8mmol/L、。。。1。。。1Fig.1Therelationshipbetweenfractaldimensionofflocsandsedimentationrateofturbid-waterinterfaceandlighttransmittanceofsupernatant2.2312mg/L。13Ca2+＞K+＞Na+。K+、Na+6.0mmol/L2.011.94。Ca2+2.41。CaCl2。1Table1Effectofdifferentionsonflocculationofcoalslurry/mmol·L－1Na+K+Ca2+01.711.711.712.01.801.862.134.01.851.952.286.01.942.012.368.01.891.922.41。－SchulzeHar-dyruleCa2+K+Na+。。2.31Ca2+2。。。12.0mg/L2Table2Theresultsofflocculantoncoalslurry/mg·L－13Ca2+/mmol·L－1/mg·L－1/mg·L－141.3242102.1581.464482.33101.504662.46121.714842.63161.6041022.318112121.71。、、。Ca2+。12.41。。3Ca2+4mmol/L。。2.152.63。8.0mg/L∶4.0mg/L。323。2340Fig.2Fractalstructureofflocswithmaximumfractaldimensiononthreetypesofregentsystem31、。。23Ca2+＞K+＞Na+。K+、Na+2.011.946.0mmol/L。Ca2+2.41。。312.0mg/L1.71Ca2+2.4132.638.0mg/L∶4.0mg/L。1．J．2007324433－436．WuXuefengZhangDongchenJiangShaotong．Thestudyoffloccu-latingcoalslimewaterusingAspergillussojaeJ．JournalofChinaCoalSociety2007324433－436．2LeeDGBonnerJSGartonLSetal．ModelingcoagulationkineticsincorporatingfractaltheoriescomparisonwithobserveddataJ．WaterＲesearch20023641056－1066．3．SiO2J．2007341263－67．LiDongmeiShiZhouWangQiaoetal．FlocculationpropertiesofpolymericaluminiumchlorideunderactionsofsurfactantandsilicadioxidenanoparticlesJ．JournalofHunanUniversity2007341263－67．4．J．2006221995－99．LiDongmeiShiZhouMeiShengetal．Studyonmorphologicprop-ertiesofbridgingflocculatedfractalaggregatesforhighconcentrationsuspensionJ．ChinaWaterandWastewater2006221995－99．5．DLAJ．20072615－9．JinPengkangWangXiaochangGuoKun．DLAsimulationoffractal9112201035flocsandcalculationoffractaldimensionJ．EnvironmentalChem-istry20072615－9．6BushellGCYanYDWoodfieldDetal．OntechniquesforthemeasurementofthemassfractaldimensionofaggregatesJ．Ad-vancesinColloidInterfaceScience20029511－50．7WuＲMLeeDJWaiteTDetal．MultilevelstructureofsludgeflocsJ．JournalofColloidandInterfaceScience20022522383－392．8．J．20052121－5．ChangYingZhangJinsongWangBaozhenetal．Studyoncoagula-tioncontrolbasedonfraetaltheoryJ．ChinaWaterandWastewater20052121－5．9．J．20098956－960．ZhangMingqingLiuJiongtianHeWeietal．FractalcharacteristicsofflocsincoalslurrytreatedusingPAMJ．ＲesearchonEnviron-mentalScience20098956－960．10．J．200867－11．ZhaoXiaochuanHuWentaoWangHuaifa．TheeffectofmixingonflocsfractaldimensionsincoalslurryJ．CoalPreparationTech-nology200867－11．11．J．200320346－49．LuXiejuanLiMengTangYouyao．FractalflocduringflocculationprocessesandthefindingoffractaldimensionJ．JournalofHua-zhongUniversityofScienceandTechnology200320346－49．12．pHJ．201043487－491．MaZhengxianTongMingyuPiaoZhengwu．InfluenceofpHonflocculatingeffectofcoalslurryJ．TechniquesandEquipmentforEnvironmentalPollutionControl201043487－491．13．J．20083391058－1062．ZhangMingqingLiuJiongtianWangYongtian．EffectsofwaterhardnessonthedispersionoffinecoalandkaoliniteincoalslurryJ．JournalofChinaCoalSociety2008339櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢櫢1058－1062．、、、、《》2009－01－01“”。0212