响应面法优化电解芬顿协同法深度处理老龄垃圾渗滤液.docx

响应面法优化电解芬顿协同法深度处理老龄垃圾渗滤液摘要：采用电解芬顿法深度处理老龄垃圾渗滤液选取电量、进水pH值、进水氨氮浓度3个因素为变量CODCr去除率为响应值进行BoxBehnken中心组合设计。利用响应面法对试验结果进行分析建立了CODCr去除率为响应值的二阶多项式模型并进行了方差分析和显著性检验通过解模型逆矩阵得到最佳条件：单位面积电量为23.26Ah/dm2、pH值为3.58、进水氨氮浓度56.78mg/L。在最佳条件下CODCr去除率为96.5%与模型预测值偏差为4.45%吻合度较高。对电解芬顿深度处理前后的渗滤液进行GCMS分析表明电解芬顿协同处理技术能有效降解垃圾渗滤液中难生化降解的有机物将有机物种类从42种降低至21种是较有效的深度处理技术。关键词：响应面法；电解芬顿；垃圾渗滤液；有机物中图分类号：X505文献标志码：A文章编号：16744764（2015）03013408Abstract：TheelectrofentonprocesswasemployedintheadvancedtreatmentofMaturelandfillleachate.PowerinitialpHandinitialammonianitrogenconcentrationwereselectedasthevariablesandCODCrremovalefficiencywereusedastheresponseinthecentralcompositedesign（CCD）.Responsesurfacemethodology（RSM）wasusedfortheanalysisoftheexperimentalresults.AsecondorderpolynomialregressionequationwasdevelopedtodescribetheCODCrremovalefficiencyandwasvalidatedbyvarianceandsignificancetest.Theoptimumreactionconditionsweredeterminedbycalculateinversematricesofregressionequation.Theresultsshowedthatundertheoptimumreactionconditions（powerdosageof23.26Ah/dm2initialpHvalueof3.58andinitialammonianitrogendosageof56.78mg/L）theCODCrremovalefficiencywas96.5%whichwashighlyconsistentwithvaluepredictedbythemodelequationwithadeviationof4.45%.GCMSmethodwasusedinanalysinglandfillleachatetreatedbyelectrofentoncomparingwithlandfillleachatetreatedbyconventionaltreatmentprocessitisindicatedthattheelectrolyticFentontechnologycaneffectivelydegradetherefractoryorganicsinlandfillleachate.TheresultshowedthatelectrolyticFentontechnologywaseffectiveadvancedtreatment.Keywords：responsesurfacemethodology；electroFenton；landfillleachate；organics城市垃圾渗滤液水质复杂污染性极强[1]所含有机物浓度高、种类多组分大多是难生物降解的有机化合物[2]并含有病原微生物、重金属浸入地下会造成严重的污染[3]。随着垃圾填埋时间的不断延长垃圾渗滤液逐渐趋于老龄化水质特征也发生变化其中CODCr、BOD5、及BOD5/CODcr降低NH3―N浓度升高微生物营养元素的比例严重失调难降解有机物浓度增高[46]。老龄垃