| CANON反应器运行稳定性及温度冲击的影响 |
| 摘要点击 3912 全文点击 1693 投稿时间：2011-11-07 修订日期：2012-04-11 |
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| 中文关键词 CANON工艺 厌氧氨氧化 短程硝化 亚硝酸盐 稳定性 温度 |
| 英文关键词 CANON process anaerobic ammonia oxidation short-cut nitrification nitrite stability temperature |
| 作者 | 单位 | E-mail | | 付昆明 | 北京建筑工程学院环境与能源工程学院,城市雨水系统与水环境省部共建教育部重点实验室,北京 100044
北京工业大学建筑工程学院,水质科学与水环境恢复工程北京市重点实验室,北京 100124 | fukunming@yahoo.com.cn | | 张杰 | 北京工业大学建筑工程学院,水质科学与水环境恢复工程北京市重点实验室,北京 100124 | | | 曹相生 | 北京工业大学建筑工程学院,水质科学与水环境恢复工程北京市重点实验室,北京 100124 | | | 李冬 | 北京工业大学建筑工程学院,水质科学与水环境恢复工程北京市重点实验室,北京 100124 | | | 孟雪征 | 北京工业大学建筑工程学院,水质科学与水环境恢复工程北京市重点实验室,北京 100124 | |
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| 中文摘要 |
| 为考察长期运行条件下全程自养脱氮(CANON)反应器的运行效果,以人工配置无机高氨氮废水为进水,研究了连续流CANON反应器的运行稳定性. CANON反应器在控制内部温度为35℃±1℃,pH 7.39~8.01,水力停留时间3.7~5.1 h条件下,稳定运行超过1 a,短程硝化性能与厌氧氨氧化性能均获得稳定,平均TN去除负荷达到1.8 kg·(m3·d)-1,平均TN去除率为65.09%,最大TN去除率可达81.65%. 低温冲击时,虽然ANAMMOX菌与AOB都会受到低温的抑制,但由于ANAMMOX菌对低温更加敏感,受到的抑制更加严重,因此造成NO2--N严重积累. 温度恢复35℃后, CANON反应器性能很快恢复正常,短暂的低温冲击不会对CANON反应器稳定性构成显著影响; 当经历超过50℃以上的高温冲击时,尽管AOB可在1周内恢复正常,但ANAMMOX菌的活性被完全破坏,使CANON反应器彻底崩溃,应予以避免. |
| 英文摘要 |
| In order to study long-term effect of completely autotrophic nitrogen removal over nitrite (CANON) reactor, performance stability was investigated by using synthetic inorganic ammonia-rich wastewater as raw water with a continuous flow CANON reactor. Both performances of short-cut nitrification and ANAMMOX were stable for more than one year. Under the condition that inner temperature at 35℃±1℃, pH 7.39 and 8.01, and hydraulic retention time 3.7-5.1 h, the average total nitrogen removal load was 1.8 kg·(m3·d)-1, and the average and maximum total nitrogen removal efficiency were 65.09% and 81.65% respectively. Under sudden low temperature conditions, both ANAMMOX bacteria and AOB were inhibited, however, the ANAMMOX bacteria were inhibited more, which caused highly accumulated nitrite. When temperature increased to 35℃ as normal, the performance of CANON reactor recovered soon, which means low temperature impact will have no significant influence on stability. When the temperature reached more than 50℃,the activity of ANAMMOX bacteria was completely destroyed, so high temperature must be avoided, though AOB can recovered to normal in one week. |
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