改性沸石处理酚类有机废水
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摘要
天然沸石在我国储量丰富,但其本身亲水性性质和结构特点使其对有机废水的处理效果并不太显著,可以通过改性提高天然沸石对有机废水的处理效果.针对天然沸石除酚性能较差,通过实验研究了天然沸石的改性方法,以提高其对有机废水中酚类的吸附能力,为沸石经改性后处理废水的效果提供了科学依据.结果表明,活化改性后的沸石对酚类有机废水有一定的处理效果,去除率在10%~50%之间,废水质量浓度相同的不同改性条件下,NaCl活化效果最好,且NaCl的改性浓度为0.3 mol/L时达到最佳处理效果.去除率:NaCl>NaOH>H_2SO_4>加热,去除率随废水质量浓度上升而逐渐下降,在中性条件下处理效果最佳.
Natural zeolite is rich in reserves in China,but its hydrophilic properties and structural characteristics make it less effective for the treatment of organic wastewater. The effect of natural zeolite on organic wastewater can be improved by modification. In this paper,the natural zeolite has a poor performance in terms of phenol removal,and the modification method of natural zeolite was studied experimentally to improve its adsorption capacity of phenols in organic wastewater,which provides a scientific basis for the effect of zeolite modified wastewater. The results showed that the activation of modified zeolite had some effect on the treatment of phenolic organic wastewater,the removal rate was between 10% and 50%and the same concentration of wastewater was the same under different modification conditions. The concentration of 0. 3 mol/L NaCl can achieve the best treatment effect. Removal rate: NaCl>NaOH>H_2SO_4> high temperature heating,and the removal rate gradually decreased with the increase of wastewater concentration. The best treatment could be achieved under the neutral conditions.
Natural zeolite is rich in reserves in China,but its hydrophilic properties and structural characteristics make it less effective for the treatment of organic wastewater. The effect of natural zeolite on organic wastewater can be improved by modification. In this paper,the natural zeolite has a poor performance in terms of phenol removal,and the modification method of natural zeolite was studied experimentally to improve its adsorption capacity of phenols in organic wastewater,which provides a scientific basis for the effect of zeolite modified wastewater. The results showed that the activation of modified zeolite had some effect on the treatment of phenolic organic wastewater,the removal rate was between 10% and 50%and the same concentration of wastewater was the same under different modification conditions. The concentration of 0. 3 mol/L NaCl can achieve the best treatment effect. Removal rate: NaCl>NaOH>H_2SO_4> high temperature heating,and the removal rate gradually decreased with the increase of wastewater concentration. The best treatment could be achieved under the neutral conditions.
引文
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[12]王萍,严子春.氯化钠改性沸石吸附水中苯酚的研究[J].中国给水排水,2000,16(4):11-14.
[13]葛学贵,太玉明,李大好,等.沸石在环境治理工程中的应用[J].环境科学与技术,2011(6):21-24.
[14]朱孔秀,袁俊生,于占花,等.国产天然斜发沸石的物性及离子交换性能研究[J].化工矿物与加工,2009(7):19-23.
[15]YAPAR S,YILMAZ M.Removal of phenol by using montmorillonite,clinoptilolite and hydrotalcite[J].Manu.Neth.,2004,10:287-289.
[16]HAGGERTY G M,BOWMAN R S.Sorption of chromate and other inorganic anions by organo-zeolite[J].Environmental Science and Technology,1994,28:452-458.
[2]曹艳芳,卢晓岩,粱莹.改性沸石吸附废水中苯胺的实验研究[J].兰州交通大学学报,2005,24(1):74-76.
[3]赵丹,王曙光,栾兆坤.改性斜发沸石吸附水中氨氮的研究[J].环境化学,2003,22(1):60-63.
[4]赵春辉,于衍真,冯岩.沸石的改性与再生及其在水处理中的应用[J].江苏化工,2008,36(4):30-33.
[5]王奖,乌力吉日嘎拉,赵希颖,等.斜发沸石在废水处理中的应用研究进展[J].环境科学与技术,2008,31(8):50-54.
[6]谭万春,王云波,孙世权,等.沸石用于有机微污染物质的去除[J].北京科技大学学报,2009(5):68-71.
[7]袁凤英,秦清风.表面活性刺改性沸石及其处理废水研究[J].太原科技大学学报,2005.26(2),157-150.
[8]成官文,吴志超,章非娟,等.沸石在水污染控制中的研究与应用进展[J].环境科学与技术,2006,29(3):111-114.
[9]ENGLERT A H,RUBIO J.Characterization and environmental application of a Chilean natural zeolite[J].Int.J.Min.Process,2012,75:21-29.
[10]TSITSISHVILI G V,ANDRONIKASHVILI T G.Natural Zeolites[M].Chichester:England,Ellis Horwood Limited,1992.
[11]AMES L L.The cation sieve properties of clinoptilolite[J].Am.Mineral.,1960,45:689-700.
[12]王萍,严子春.氯化钠改性沸石吸附水中苯酚的研究[J].中国给水排水,2000,16(4):11-14.
[13]葛学贵,太玉明,李大好,等.沸石在环境治理工程中的应用[J].环境科学与技术,2011(6):21-24.
[14]朱孔秀,袁俊生,于占花,等.国产天然斜发沸石的物性及离子交换性能研究[J].化工矿物与加工,2009(7):19-23.
[15]YAPAR S,YILMAZ M.Removal of phenol by using montmorillonite,clinoptilolite and hydrotalcite[J].Manu.Neth.,2004,10:287-289.
[16]HAGGERTY G M,BOWMAN R S.Sorption of chromate and other inorganic anions by organo-zeolite[J].Environmental Science and Technology,1994,28:452-458.