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
1. Biofilm Research Institute, Qingdao SPRING Water Treatment CO. Ltd., Qingdao 266555, China;
2. Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400044, China;
3. School of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
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.
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. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 2062-2072.
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