CANON生物膜载体储存及活性恢复研究  

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

作　　者：韩文杰 吴迪 周家中 皇甫小留 李果[2] 何强[2] 阚渝姣 HAN Wen-jie;WU Di;ZHOU Jia-zhong;HUANGPU Xiao-liu;LI Guo;HE Qiang;KAN Yu-jiao(Biofilm Research Institute,Qingdao SPRING Water Treatment CO.Ltd.,Qingdao 266555,China;Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400044,China;School of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]青岛思普润水处理股份有限公司生物膜研究院,山东青岛266555 [2]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [3]山东科技大学安全与环境工程学院,山东青岛266590

出　　处：《中国环境科学》2020年第5期2062-2072,共11页China Environmental Science

基　　金：水体污染控制与治理科技重大专项(2017ZX07106005),青岛市民生科技计划项目(18-6-1-100-nsh)。

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.The activity recovery effect of CANON-MBBR reactor which had experienced short-term storage at low temperature(20 days,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 25 days 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.

关 键 词：CANON MBBR 悬浮载体储存 低负荷运行 活性恢复 

分 类 号：X703.5[环境科学与工程—环境工程]