CANON生物膜载体储存及活性恢复研究

韩文杰; 吴迪; 周家中; 皇甫小留; 李果; 何强; 阚渝姣

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中国环境科学 ›› 2020, Vol. 40 ›› Issue (5) : 2062-2072.

水污染与控制

CANON生物膜载体储存及活性恢复研究

韩文杰¹, 吴迪¹, 周家中¹, 皇甫小留², 李果², 何强², 阚渝姣³

作者信息 +

Research on the storage and activity recovery of CANON suspended carrier biofilm

HAN Wen-jie¹, WU Di¹, ZHOU Jia-zhong¹, HUANGPU Xiao-liu², LI Guo², HE Qiang², KAN Yu-jiao³

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文章历史 +

摘要

采用不同活性恢复手段研究了短期低温（20d，15℃）储存及常温（25℃）低负荷运行后，CANON-MBBR反应器的活性恢复效果.结果显示，CANON悬浮载体经短期低温储存后，通过先恢复温度后缓慢提高进水负荷的方式可使其TN去除负荷恢复率达到102%.若在温度未恢复的基础上直接将进水负荷提升至原水平运行，CANON悬浮载体生物膜将无法维持正常的EPS含量而易发生脱膜现象，致使TN去除负荷恢复率仅为84%.另外，系统有一定基质浓度的基础上，经过25d常温（25℃）低负荷SBR运行后，通过同样的恢复手段可使TN去除负荷恢复率达到96%.通过微生物菌群分析，确定CANON-MBBR系统中功能微生物优势菌属分别为Nitrosomonas和Candidatus Kuenenia，采取合适的恢复手段使系统进入稳定运行阶段后，两者丰度均可分别达到11%以上及27%以上，且悬浮载体脱膜并未对微生物组成造成明显影响.

Abstract

The activity recovery effect of CANON-MBBR reactor which had experienced short-term storage at low temperature (20days, 15℃) and low load operation at room temperature (25℃) was studied by using different recovery methods. The results showed that the recovery rate of TN removal load reached 102% by recovering the temperature first and then slowly increasing the influent load. If the influent load was directly raised to the original level without the increase of temperature, the detachment of biofilms of the suspended carriers could happen due to the decrement of EPS content, therefore the recovery rate of TN removal load was lowered to 84%. In addition, the recovery rate of TN removal load reached 96% after 25days of SBR operation under low load and normal temperature (25℃) by the same recovery method. The dominant functional microorganisms in CANON-MBBR system were identified as Nitrosomonas and Candidatus Kuenenia. The relative abundance of both genus could reach over 11% and 27% respectively after the system entered the stable operation by appropriate recovery methods. The microbial composition of biofilms was not significantly influenced by the biofilm detachment.

导出引用

韩文杰, 吴迪, 周家中, 皇甫小留, 李果, 何强, 阚渝姣. CANON生物膜载体储存及活性恢复研究[J]. 中国环境科学. 2020, 40(5): 2062-2072

HAN Wen-jie, WU Di, ZHOU Jia-zhong, HUANGPU Xiao-liu, LI Guo, HE Qiang, KAN Yu-jiao. Research on the storage and activity recovery of CANON suspended carrier biofilm[J]. China Environmental Science. 2020, 40(5): 2062-2072

中图分类号： X703.5

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