陶粒及涂铁陶粒和涂铝陶粒对含铜废水吸附试验研究

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1、陶粒及涂铁陶粒和涂铝陶粒对含铜废水吸附试验研究中文摘要利用陶粒及涂铁陶粒和涂铝陶粒对含铜废水进行了吸附试验研究，考察了陶粒及改性陶粒对废水溶液中铜离子的吸附性能及吸附剂用量、接触时间、废水的pH值及含铜废水初始浓度对铜离子去除率的影响。结果表明，涂铝陶粒对含铜废水的去除率更为显著，和陶粒相比，去除率可由49%提高至67%。但是由于铁离子干扰铜离子的测定，涂铁陶粒的吸附试验结果较差。在铜离子浓度为25mg/L的情况下，选择室温、pH值为6、接触时间为40min、吸附剂用量为12.5g/L时可获得最大去除率。对于不同初

2、始浓度的含铜废水，去除率较为稳定。在试验范围内，陶粒对铜离子的吸附符合Freundlich方程。本文为陶粒及改性陶粒处理含铜废水提供了理论依据和工艺参数。关键词:涂铁陶粒；涂铝陶粒；含铜废水；去除率37Studyoncopper-bearingwastewatertreatedbyusingscoriaceramsiteAbstractApplicationofceramsite,ceramsitecoatedwithironandceramsitecoatedwithaluminiumtotreatmentwas

3、studiedrespectively.Moreovertheadsorptionpropertiesandtheeffectsofabsorbentdoes，adsorptiontime,thepHofthewastewaterandinitialconcentrationofthewastewaterwereexplored.Theresultsshowedthatthecapacityofceramsitecoatedwithaluminiumforadsorbingwashigh.Comparedwithc

4、eramsite，theromovalratecanincreasefrom49percentto67percent.However,theceramsitecoatedwithironmaybringaboutironwhichmaydisturbthedeterminationoftheconcentrationofcopper,sothattheeffectontheremovalratecannotreachtheexpectance.Inaddition,whencopperconcentrationwa

5、s25mg/L,atroomtemperature,andwithpHat6，contacttimefor40min,themaximumremovalratioofcoppercanbeachievedbyusingceramsiteandtheceramsitetransformedat12.5g/L.Andeveniftheinitialconcentrationofthecopper-bearingwastewaterisvariable,theremovelrateturnedouttoberathers

6、teady.TheisothermaladsorptionofceramsiteforcopperfitFreundlichequationwithintherangeofcxperimentalconcentration.Theapplicationoftheceramsiteandceramsitetransformedastheabsorbentinwastewatertreatmentprovidesatheoreticalbasisandtechnologicalparametersforthefutur

7、eresearch.Keywords:ceramsitecoatedwithiron；ceramsitecoatedwithaluminium；copper-bearingwastewater；removalrate37目录中文摘要1英文摘要21绪论51.1水污染现状51.2铜的性质、来源、危害及控制标准61.2.1铜的性质61.2.2铜的来源71.2.3铜离子的危害71.2.4铜的控制标准81.3含铜废水的处理方法81.3.1化学沉淀法81.3.2离子交换法91.3.3生物法101.3.4反渗透法101.3.5离

8、子螯合法111.3.6其它处理方法111.3.6.1电解法111.3.6.2液膜分离法121.3.6.3溶剂萃取法121.4吸附理论121.4.1吸附原理121.4.2影响吸附的因素131.4.3吸附剂概述141.4.4实验所用吸附剂151.4.5吸附法除铜现状161.4.6吸附法在污水处理中的应用171.5研究方法与内容171.5.1研究方法171.5.2