中文关键词全程自养脱氮(CANON)温度厌氧氨氧化(ANAMMOX)氨氧化细菌亚硝酸盐氧化细菌(NOB)短程硝化 英文关键词completely autotrophic nitrogen removal over nitrite (CANON)temperatureanaerobic ammonium oxidation(ANAMMOX)ammonia-oxidizing bacterianitrite oxidizing bacteria(NOB)shortcut nitrification

作者	单位	E-mail
付昆明	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044	fukunming@163.com
廖敏辉	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044
周厚田	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044
付巢	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044
姜姗	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044
仇付国	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044
曹秀芹	北京建筑大学环境与能源学院, 城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044

中文摘要 本文以低温高氨氮废水为着眼点，通过不断地调节运行工况，探讨降温过程中全程自养脱氮（CANON）工艺的运行特征，以探索出低温环境下进水NH₄⁺-N浓度较高时，CANON工艺获得稳定短程硝化和良好脱氮效果的方法.结果表明：①相较于直接将生物膜CANON反应器的温度条件由中温转变为低温（30℃±1℃→19℃），逐步降温驯化更有利于脱氮功能菌适应低温环境，且每次降温的幅度应尽量减小，同时还应配合运行工况的调节；②温度经25 d逐步降低至19℃左右，18 d后又继续降至15℃左右，NH₄⁺-N和TN去除率均能分别长期稳定在90%、70%以上，甚至当温度下降至12℃时，TN去除率与去除负荷仍能分别达到72.52%、0.78kg·（m³·d）^-1；③降温过程中驯化生物膜CANON污泥时，应优先考虑短程硝化控制.可通过维持一定的剩余NH₄⁺-N浓度并严格控制DO浓度，以抑制NOB的活性，从而获得稳定的短程硝化效果. 英文摘要 The focus of this paper, was low temperature, high ammonia nitrogen wastewater. The operation characteristics of the biofilm CANON process during the temperature reduction process were determined, by continuously adjusting different operating conditions. The aim was to explore the methods needed for the CANON process to obtain stable shortcut nitrification and a good nitrogen removal effect, when the influent NH₄⁺-N concentration is high and the temperature low. The results showed that, ① compared with the biofilm CANON reactor temperature changing from medium to low temperature directly (30℃±1℃→19℃), it was more conducive to adapt the nitrogen-removing bacteria to the low-temperature environment, while the temperature was gradually lowered. Moreover, the extent of each reduction should be minimized. Besides, the operating conditions should be adjusted to ensure the nitrogen removal effect. ② The temperature was gradually reduced to about 19℃ after 25 d, and then decreased to about 15℃ after another 18 d. The NH₄⁺-N and TN removal rates could be respectively stable at 90% and 70% over a long period of time. The TN removal rate and removal load could still reach 72.52% and 0.78 kg·(m³·d)^-1, respectively, even when the temperature dropped to 12℃. ③ When adapting biological CANON sludge during the temperature reduction process, shortcut nitrification should be given priority. A stable shortcut nitrification effect should be obtained by maintaining a certain concentration of residual NH₄⁺-N, and by strictly controlling the DO concentration to restrain NOB activity.

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