| 气升式内循环蜂窝陶瓷反应器降解2,4-二氯酚的研究 |
| 摘要点击 1243 全文点击 1409 投稿时间：2001-05-31 修订日期：2001-09-11 |
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| 中文关键词 生物降解 蜂窝陶瓷 气升式内循环生物反应器 半连续流 |
| 英文关键词 biodegradation honeycomb like ceramic air lift inner loop bioreactor fed batch mode |
| 作者 | 单位 | | 全向春 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 | | 张永明 | 南昌航空工业学院环境与化学工程系,南昌,330034 | | 王建龙 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 | | 施汉昌 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 | | 钱易 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 |
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| 中文摘要 |
| 从以2,4-二氯酚(2,4-DCP)长期驯化的好氧活性污泥中分离出一株以2,4-DCP为唯一碳源的菌种,将这种菌固定在气升式内循环蜂窝陶瓷反应器内,研究了此反应器在半连续流运行时,对2,4-DCP单基质及其与苯酚共基质时对污染物的降解情况及降解动力学.结果表明,2,4-DCP单基质时,反应器对氯酚的去除效果随着实验次数的增加而加快;2,4-DCP与苯酚共基质时,苯酚的降解速率随着半连续流实验次数的增加而加快,而氯酚的降解速率则表现出下降的趋势.此外,还研究了此反应器在连续流运行时对2,4-DCP的降解,水 |
| 英文摘要 |
| An air lift inner loop bioreactor packed with honeycomb like ceramic carrier was immobilized with a 2,4-Dichlorophenol degrading pure culture and was investigated to degrade 2,4-Dichlorophenol and phenol. In fed batch operation mode, 2,4-DCP biodegradation rate increased with run numbers and followed zero order kinetics model when it existed alone, but when 2,4-DCP was present in the mixture with phenol, phenol degradation rate had an apparent trend to increase whereas 2,4-DCP removal rate became slower and slower. In continuous operation, 2,4-DCP at the concentration ranged from 6.9 to 102.4 mg/L could be degraded well at the dilution rate of 0.16h-1 and the average removal percentage was 96 5%. Carbon sources changed from 2,4 DCP to acetate sodium and peptone in the course of operation for 12 days did not cause the bacteria loss the DCP degrading ability. |
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