| 四区一体反应器冬季启动脱氮特性及硝化菌群结构分析 |
| 摘要点击 2109 全文点击 1102 投稿时间：2015-03-08 修订日期：2015-04-15 |
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| 中文关键词 脱氮 冬季启动 硝化细菌 荧光原位杂交技术(FISH) 一体式反应器 |
| 英文关键词 nitrogen removal start-up at winter nitrobacteria fluorescence in situ hybridization(FISH) integrated reactor |
| 作者 | 单位 | E-mail | | 张岩 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | yzhang@bjut.edu.cn | | 孙凤侠 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 谢杭冀 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 陈敬 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 眭稀 | 北京北排水务设计研究院有限公司, 北京 100123 | | | 甘志明 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 王修平 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 史扬 | 北京工业大学建筑工程系, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | |
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| 中文摘要 |
| 我国分散型污水处理问题亟待解决,研究开发了四区一体式生物膜-活性污泥生物脱氮反应器,采用梯度缩短HRT方法,考察了冬季8~15℃水温环境下的反应器COD、NH4+-N、TN去除效果,同时,采用荧光原位杂交技术(FISH)对种泥及其启动过程中的生物膜硝化菌群(AOB、NOB)结构进行分析,并对反应器运行效果与功能微生物的相关关系进行了探讨. 结果表明,在HRT为9.2 h下COD、NH4+-N、TN去除率分别为92.11%、99.21%、61.63%; 启动末期生物膜内AOB、NOB数量是种泥的5.82倍、6.14倍,硝化细菌占总菌量由6.12%上升至16.38%,成为生物膜的优势菌群; 末期硝化效率由初期78.49%上升至97.52%,NOB数量增长5.61倍,AOB/NOB值优化为1.47,反应器内富集生长的AOB、NOB及合适的AOB/NOB比值是确保硝化出水水质的重要保障. |
| 英文摘要 |
| The treatment of decentralized sewage has gained more and more attention in China in recent years. A four-zone integrated reactor was designed by combining biofilm system and activated sludge system and start-up by gradient shorten the HRT. The removal of COD, NH4+-N and TN were studied at 8-15℃. Fluorescence in situ hybridization(FISH) was used to detect nitrobacteria population (AOB,NOB) so as to study the relationship between the reactor effect and functional micro-bacteria. The results showed that, when the HRT was 9.2 h, the removal efficiencies of COD, ammonia and TN were 92.11%, 99.21% and 61.63%, respectively. Compared to the initial stage, the numbers of AOB and NOB in the late phase were increased by 5.82 and 6.14 times, respectively. In addition, the proportion of nitrobacteria was increased from 6.12% to 16.38%, which became the dominant bacteria in biofilms. Moreover, the nitrification efficiency was increased from 78.49% to 97.52%, while the number of NOB was 5.61-fold increased and the value of AOB/NOB was optimized to 1.47. The effluent quality is guaranteed by the enrichment of AOB and NOB and suitable value of AOB/NOB. |
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