| 沸石和陶粒挂膜前后脱除氨氮的特性研究 |
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| 引用本文： | 徐金兰,董玉华,黄廷林,康俊琛,蔡道健. 沸石和陶粒挂膜前后脱除氨氮的特性研究[J]. 西安建筑科技大学学报(自然科学版), 2012, 0(1): 132-136 |
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| 作者姓名： | 徐金兰 董玉华 黄廷林 康俊琛 蔡道健 |
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| 作者单位： | 西安建筑科技大学环境与市政工程学院;西部建筑科技国家重点实验室(筹) |
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| 基金项目： | 国家国际科技合作资金资助项目(2010DFA94550,2010KW-24(1));国家“水体污染控制与治理”重大科技专项资金资助(2009ZX07317-007-1-2);国家自然科学基金资助项目(50778147) |
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| 摘 要： | 研究了沸石和陶粒挂膜前后脱除氨氮的特性,结果表明,沸石挂膜前后对氨氮的去除率均高于陶粒,沸石可以将水中77%～100%的氨氮脱除,而陶粒仅能去除56%～63%的氨氮,沸石是脱除氨氮的优选填料.解析实验结果表明,沸石挂膜前后脱除氨氮主要机理不同,离子交换是沸石挂膜前脱除氨氮的主要机理,化学吸附去除氨氮所占的比例高达80%;沸石挂膜后,降解氨氮的百分数高达到80%,附着的生物膜可以利用沸石中吸附的氨氮,使沸石的离子交换能力得到再生,沸石的再生率随着投加量的增加而增大,最高可达46%,延长了沸石的使用寿命.
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| 关 键 词： | 沸石 陶粒 氨氮 生物再生 |
Study on the characteristics of ammonia nitrogen removal by zeolite and ceramicite |
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| XU Jin-lan,DONG Yu-hua,HUANG Ting-lin,KANG Jun-chen,CAI Dao-jian. Study on the characteristics of ammonia nitrogen removal by zeolite and ceramicite[J]. Journal of Xi'an University of Architecture & Technology, 2012, 0(1): 132-136 |
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| Authors: | XU Jin-lan DONG Yu-hua HUANG Ting-lin KANG Jun-chen CAI Dao-jian |
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| Affiliation: | 1(1.School of Environmental and Municipal Engineering,Xi′an Univ.of Arch.& Tech.,Xi′an 710055,China; 2.State Key Laboratory of Architecture Science and Technology in West China,Xi′an 710055,China) |
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| Abstract: | The characteristics of ammonia nitrogen removal by zeolite and ceramicite was investigated.The results show that the removal efficiencies of ammonia nitrogen by zeolite is 77%~100% higher than those by ceramicite(the corresponding values by ceramicite are 56%~63%).These results indicate that zeolite is optimum filling.In addition,the results show that there are different mechanisms of ammonium removal between zeolite and bio-zeolite.Chemical ion exchange is the main way of removing ammonium by zeolite as the removal percentage of chemical ion exchange is 80%.However,after zeolite was inoculated,the biological removal percentage increased to 80%.So,the biological removal nitrogen is the main way of removing ammonium by bio-zeolite.Inocaltation of zeolite benefits regeneration of zeolite and the maximal regeneration efficiency of zeolite can reach of 46%. |
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| Keywords: | zeolite ceramicite ammonia nitrogen biological regeneration. |
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