中低温下基于纯膜条件多段A/O-MBBR系统脱氮能力中试研究  

Study on the nitrogen removal capacity of multi-stage A/O-MBBR pilot scale system based on pure biofilm at medium-low temperature

作　　者：姜自健 臧海龙 兰杰 张建华 毕学军[1] JIANG Zijian;ZANG Hailong;LAN Jie;ZHANG Jianhua;BI Xuejun(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China;Qingdao Water Group Environmental Energy Co.Ltd.,Qingdao 266002,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525 [2]青岛水务集团环境能源有限公司,青岛266002

出　　处：《青岛理工大学学报》2024年第3期110-118,共9页Journal of Qingdao University of Technology

基　　金：山东省重大科技创新工程(2020CXGC011202);欧盟ERASMUS+计划项目(619456-EPP-1-2020-1-NO-EPPKA2-CBHE-JP)。

摘　　要：针对低温条件下活性污泥法生物硝化限制性瓶颈问题,构建了三段式A/O-MBBR中试系统,对其在中低温条件下的脱氮能力开展研究,结合生物膜在静态实验条件下的硝化能力及形态变化,分析了系统脱氮效果的影响因素。研究结果表明,在反应温度为10~16℃、处理水量为(23.6±5.4) m^(3)/d、碳源投加量为50~90 mg/L条件下,系统进水SCOD、NH+4-N和TIN浓度分别为(147±30)、(38.3±2.1)和(39.6±2.3) mg/L,出水分别降至(26±6)、(0.4±0.6)和(6.8±3.6) mg/L,去除率分别达到82.3%、99.0%和82.8%,其中系统中第2段A/O-MBBR分系统表现出良好的硝化能力,其硝化去除负荷可达0.9 g/(m^(2)·d),NH_(4)^(+)-N硝化贡献率可达54%;生物膜厚度是影响其硝化能力的重要因素。The bottleneck problem of biological nitrification always exists in the activated sludge process at low temperature.In this study,a pilot-scale three-stage anoxic/oxic(A/O)moving bed biofilm reactor(MBBR)was constructed to investigate the nitrogen removal performance.Based on the nitrification ability and morphological changes of biofilm under static experimental conditions,this study analyzed the influencing factors of nitrogen removal of the system.The results showed that when the reaction temperature was 10-16°C,and the sewerage inflow was(23.6±5.4)m^(3)/d,the concentration of external carbon source was 50~90 mg/L,the concentrations of SCOD,NH+4-N and TIN in the influent were(147±30),(38.3±2.1)and(39.6±2.3)mg/L respectively,and those in the effluent were(26±6),(0.4±0.6)and(6.8±3.6)mg/L respectively.The average removal rates were 82.3%,99.0% and 82.8%.The second A/O-MBBR sub-system showed a good nitrification capacity.Its nitrification removal load could reach 0.9 g/(m^(2)·d)and NH_(4)^(+)-N nitrification contribution rate could reach 54%.The biofilm thickness was an important factor affecting the nitrification capacity of the biofilm.

关 键 词：城市污水 中低温 多段式缺氧/好氧 MBBR 中试系统 

分 类 号：X703.1[环境科学与工程—环境工程]