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当前位置:首页 > 行业资料 > 冶金工业 > 高铁铝矾土制备聚合氯化铝铁及其在污水处理中的应用研究张占梅
76Vol.7,No.620066TechniquesandEquipmentforEnvironmentalPollutionControlJun.2006张占梅1 郑怀礼1,2* 陈春艳1(1.,400044;2.,400045) ,,。。,、、,,。:;、,,。 X703.5;TQ314.253 A 1008-9241(2006)06-0052-04PreparationandapplicationofpolymerizedaluminumferrumchloridewithbauxiteZhangZhanmei1 ZhengHuaili1,2 ChenChunyan1(1.CollegeofChemistryandChemicalEngineering,ChongqingUniversity,Chongqing4000442.KeyLaboratoryoftheThreeGorgesReservoirRegion’sEco-Environment,MinistryofEducation,ChongqingUniversity,Chongqing400045)Abstract Anewtypeflocculant-polymericaluminumferricchloridewasprepared.Themainmaterialwasbauxite,andtheothermaterialwascaliumaluminum.Theeffectsofconcentrationandamountofhydrochloricacid、temperatureandamountofcaliumaluminumwereinvestigatedandtheoptimumconditionsweregivenintheexperimen.tTheflocculatingeffectofthepolymericalumnumferricchloridewasresearchedinthetreatmentofpracticalindustrialwastewater.Experimentalresultsshowedthattheflocculatingeffectwassuperiortoothertra-ditionalflocculantsandhasadvandageoffewdosageandquicksedimentation.Itwasahigheffectiveflocculan.tKeywords bauxite;flocculant;polymericaluminumferricchloride;preparation;wastewatertreatment:(20577072);(7517-03):2005-05-14;:2005-10-03:(1980~),,,。*,E-mail:zhenghl@cta.cq.cn ,,,、、。,、。,,,,45%,,,,,[1]。,,。。[2~7]。,、,,[8];、,。,FeCl3,。,,。6:1 1.1 :,,:Al2O332.96%,FeT5.78%,SiO224.32%,CaO4.05%,32.89%。:(Al2O353%,);()。1.2 721;JJ-4;JB90-D;PHS-3。1.3 1.3.1 聚合氯化铝铁的制备,800℃3h。120。,100g20%,95℃3h,,95℃4h,,24h,。1.3.2 试验污水水质,1。1 Table1 Water-qualityindexofwastewaterpH()COD(mg/L)7.2478.3896.96.5432.1494.01.3.3 絮凝试验500mL,pH,,350r/min2min,80r/min8min,,15min,2~3cm,COD。2 2.1 2.1.1 盐酸浓度对Al2O3和FeT溶出率的影响,,Al2O3FeT,1。1,,Al2O3FeT,。20%,Al2O3FeT80.4%87.9%。20%,Al2O3FeT。,1 Fig.1 Effectofconcentrationofhydrochloricacidondissolutionrate,,。,,。,20%。2.1.2 盐酸用量对溶出率和盐基度的影响,(20%),Al2O3FeT,23。2 Fig.2 Effectofamountofhydrochloricacidondissolutionrate3 Fig.3 Effectofamountofhydrochloricacidonbascity 23,,,。,Al3+Fe3+,,;,,。500mL,,,537,500mL。2.1.3 酸浸温度对溶出率的影响,,Al2O3FeT,4。4 Fig.4 Effectofaciddippingtemperatureondissolutionrateandbascity,,。4,,Al2O3FeT,。95℃,Al2O3FeT,,;,,,95℃。2.1.4 铝酸钙粉投加量的确定,,,,56。5 Al2O3Fig.5 Effectofamountofcaliumaluminumonalundum6 Fig.6 Effectofamountofcaliumaluminumonbascity,,,,pH,。56,。,,;,,50g。2.2 2.2.1 污水pH值对混凝试验的影响,,pH,COD,78。7 pHFig.7 EffectofpHvalueonremovalofturbidity8 pHCODFig.8 EffectofpHvalueonremovalofCODpH,,,COD。78,pH6.0~10.0,COD。pH7.2,COD97.12%73.5%。pH6.5,COD96.06%72.8%。pH,COD。2.2.2 絮凝剂投加量对絮凝效果的影响,,,COD,910。910,546:9 Fig.9 Effectofamountofpolymericferro-aluminumonremovalrateofturbidity10 CODFig.10 Effectofamountofpolymericferro-aluminumonremovalofCOD。,400~850mg/L,COD,850mg/L,,COD;,250~900mg/L,,900mg/L,。,,,,,,,,,,COD。,,,,。,。2.2.3 几种絮凝剂絮凝性能的比较,,2。2 Table2 Performancecomparisonofdifferentflocculants(%)COD(%)PAFC97.2086.14PAC96.4684.36PASiC96.4684.93PAS94.3781.41 2,PAFCCOD,PAFC,,,。3 ,,Al12AlO4(OH)24,(Fe3+),,,“”、“”。,“”、“”,,-,,。4 ,,pH,。:100g20%500mL,95℃3h,50g,95℃4h,。,PAC,PASiCPAS,。[1],,,..,2002,39(1):88~91[2],,..,2001,(2):143~147[3],,..,2000,1(5):21~28[4],,,..,2001,27(5):274~276[5],,..,2002,28(6):339~342[6],.PFCNS.,2001,21(11):28~30[7],,.PAC-PDMDAAC/.,2005,31(3):69~71[8],..,2004,30(6):315~31955
本文标题:高铁铝矾土制备聚合氯化铝铁及其在污水处理中的应用研究张占梅
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