| 胶体态有机物对生物膜硝化过程的影响 |
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| 引用本文： | 李久义,栾兆坤,朱宝霞,陈福泰,贾智萍.胶体态有机物对生物膜硝化过程的影响[J].环境科学,2003,24(5):70-74. |
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| 作者姓名： | 李久义 栾兆坤 朱宝霞 陈福泰 贾智萍 |
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| 作者单位： | 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085 |
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| 基金项目： | 国家自然科学基金项目(59838300) |
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| 摘 要： | 利用曝气生物滤池研究了胶体态和溶解态有机物对生物膜中硝化过程的影响.实验结果表明,胶体态有机物的水解过程进行得较为迅速,不会成为生物降解的限制过程.70%有机物的氧化在滤池的进口40cm内完成,而随着进水有机物浓度的增加硝化过程向滤池的上部迁移.胶体态有机物对硝化过程的抑制作用比同样浓度溶解态有机物略大.
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| 关 键 词： | 胶体态有机物 生物膜 生物硝化 |
| 文章编号： | 0250-3301(2003)05-05-0070 |
| 收稿时间： | 2002/8/22 0:00:00 |
| 修稿时间： | 2002年8月22日 |
Effects of Colloidal Organic Substrate on Nitrification in Biofilms |
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| Li Jiuyi,Luan Zhaokun,Zhu Baoxi,Chen Futai and Jia Zhiping.Effects of Colloidal Organic Substrate on Nitrification in Biofilms[J].Chinese Journal of Environmental Science,2003,24(5):70-74. |
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| Authors: | Li Jiuyi Luan Zhaokun Zhu Baoxi Chen Futai and Jia Zhiping |
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| Institution: | State Kay Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. |
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| Abstract: | The effects of colloidal and soluble organic substrates on nitrification in biofilms were investigated in biological aerated filters. The results showed that the hydrolysis process of colloidal organic matter took place rapidly, which could not be the limiting step of its oxidation in the biofilm. Some 70% organic matter oxidation was accomplished at the 40 cm at the bottom of the both filters, while the increase of organic matter in the influent resulted in the displacement of nitrification from the bottom to the upper part of filter bed. It was observed that the greater reduction on nitrification was caused by colloidal organic matter than by soluble organics at the same COD concentration. |
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| Keywords: | colloidal organic substrate biofilm biological nitrification |
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