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《中和铁盐法处理高砷酸性废水的响应曲面优化研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第2l卷第2期矿冶Vo1.21,No.22012年6月MINING&METALLURGYJune2012文章编号:1005-7854(2012)02-0084-04中和铁盐法处理高砷酸性废水的响应曲面优化研究楚天福张利波彭金辉巨少华刘秉国(昆明理工大学冶金与能源工程学院,非常规冶金省部共建教育部重点实验室,云南省微波能应用及装备技术工程实验室,昆明650093)摘要:采用响应曲面法中心组合设计对中和铁盐法处理高砷酸性废水工艺过程进行设计并分析了稀释倍数、铁砷摩尔比、pH值及其交互作用对滤液砷含量的影响,建立了关于滤液砷含量的数学模型。
2、方差分析表明,铁砷摩尔比、pH值对滤液砷含量有较显著影响,建立的数学模型拟合度良好,获得优化工艺参数为稀释倍数1.3、铁砷摩尔比为4、pH值为4,实际值与模型预测值相差0.02%,经处理后废水中砷含量为0.35nlg/L。结果表明模型预测结果可靠有效,应用响应曲面法优化得到中和铁盐法处理高砷废水工艺条件合理可行。关键词:中和铁盐法;高砷废水;响应曲面法中图分类号:X703.1文献标识码:Adoi:10.3969/j.issn.1005-7854.2012.02.019RESPONSESURFACEMETHODOLOGYOPTIMIZA
3、TIONSTUDYOFTREATINGHIGHARSENICWASTEWATERWITHACIDITYBYNEUTRALIZINGIRONSALTPR0CESSCHUTian-fuZHANGLi··boPENGJin-·huiJUShao-·huaLIUBing·-guo(FacultyofMetallurgyandEnergyEngineering,KunmingUniversityofScienceandTechnology,KeyLaboratoryofUnconventionalMetallurgy,MinistryofEdu
4、cation,EngineeringLaboratoryofMicrowaveEnergyApplicationandEquipmentTechnology,YunnanProvince,Kunming650093,China)ABSTRACT:Theprocessofneutralizingironsaltfortreatinghigharsenicwastewaterwithacidityisdesignedbyresponsesurfacemethodologycentralcompositeexperimentaldesign
5、(CCD).Andtheefectofdilutionratio,ironarsenicmooreratio,pHvalueandtheirinteractiononthearseniccontentinfiltratethusamathematicalmodelre-latedwitharseniccontentinfiltrateisobtained.Theanalysisofvariance(ANOVA)showsthatironarsenicmolarratioandpHhavethemostsignificantinflue
6、ncesonthearseniccontentinfiltrate.Theestablishedmathematicalmodelfittingisgoodandtheoptimizedprocessparametersareobtainedasfollowing:dilutionratiois1.3,ironar—senicmolarratio4,andpHvalue4respectively,thedifferencebetweenactualvalueandpredictedvalueis0.02%.Aftertheneutra
7、lizingironsaltprocesstreatinghigharsenicwastewaterwithacidity,thearsenicintheSO—lutionis0.35mg/L.Theresultsshowthatpredictivemodelisaccurateandeffectiveandtheprocessconditionofneutralizingironsahfortreatinghigharsenicwastewaterwithacidityobtainedbyresponsesurfacemethodo
8、logyop。timizationisreasonableandfeasible.KEYWORDS:processofneutralizingironsalt;hisharsenicwastewaterwithacidi
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