·126·化工环保ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY2023年第43卷第1期聚硅酸铝铁-海藻酸钠复合絮凝剂的制备马鸿鹤,张浩,王润楠,娄大伟(吉林化工学院化学与制药工程学院,吉林吉林132022)[摘要]以硅酸钠、硫酸铝、氯化铁、海藻酸钠(SA)为原料制备了聚硅酸铝铁-海藻酸钠(PSAFe-SA)絮凝剂,并采用SEM、FTIR、XRD、TGA技术进行了表征,分析了影响PSAFe-SA絮凝沉降效果的主要因素,并考察了该絮凝剂对松花江水样的处理效果。实验结果表明:在制备聚硅酸的pH为3.0、n(Al+Fe)∶n(Si)为1.0、n(Al)∶n(Fe)为4.0、m(SA)∶m(Si)为0.04的条件下,所制备的PSAFe-SA絮凝剂性能最好;在水样pH为6.0、PSAFe-SA投加量为28mg/L、沉降时间为20min的最佳絮凝条件下,松花江水样的浊度去除率为94.50%。[关键词]聚硅酸铝铁;海藻酸钠;复合絮凝剂;絮凝性能[中图分类号]X522[文献标志码]A[文章编号]1006-1878(2023)01-0126-06[DOI]10.3969/j.issn.1006-1878.2023.01.019Preparationofpolysilicate-aluminum-ferricandsodiumalginatecompositeflocculantMAHonghe,ZHANGHao,WANGRunnan,LOUDawei(SchoolofChemicalandPharmaceuticalEngineering,JilinInstituteofChemicalTechnology,Jilin132022,China)Abstract:Usingsodiumsilicate,aluminumsulfate,ferricchlorideandsodiumalginate(SA)asrawmatierials,thepolysilicate-aluminum-ferricandsodiumalginate(PSAFe-SA)flocculantwaspreparedandcharacterizedbySEM,FTIR,XRDandTGA.ThemainfactoresaffectingtheflocculationeffectofPSAFe-SAwerediscuussed,andtheflocculationeffectofPSAFe-SAtothewatersampleofSonghuaRiverwasstudied.Theexperimentalresultsshowthat:whentheconditionsofpolysilicatepreparationpHis3.0,n(Al+Fe)∶n(Si)is1.0,n(Al)∶n(Fe)is4.0andm(SA)∶m(Si)is0.04,theflocculationcapabilityofthepreparedPSAFe-SAisthebest;undertheoptimumflocculationconditionsofwatersamplepH6.0,PSAFe-SAamount28mg/Landsedimentationtime20min,theturbidityremovalrateofthewatersampleofSonghuaRiveris94.50%.Keywords:polysilicate-aluminum-ferric;sodiumalginate;compositeflocculant;flocculationcapability[收稿日期]2022-02-25;[修订日期]2022-10-19。[作者简介]马鸿鹤(1996—),女,吉林省吉林市人,硕...