LONG Ze-bo,LUO Min,MA Wen-chao,et al.Application of Membrane Aerated Biofilm Reactor in Upgrading of Wastewater Treatment Plant[J].China Water & Wastewater,2020,36(17):1-5.
膜传氧生物膜反应器在污水厂升级改造中的应用
- Title:
- Application of Membrane Aerated Biofilm Reactor in Upgrading of Wastewater Treatment Plant
- Keywords:
- membrane aerated biofilm reactor (MABR); simultaneous nitrification and denitrification; oxygen transfer rate; nitrification rate
- 摘要:
- ZeeLungTM膜传氧生物膜反应器工艺（ZeeLungTM MABR工艺）在美国伊利诺斯州YBSD污水处理厂成功应用，成为目前世界上最大的MABR污水处理厂。ZeeLungTM MABR工艺将原有的好氧活性污泥系统改造成A2O工艺系统，ZeeLungTM膜箱安装于改造后的缺氧池，在不新建生化构筑物的条件下，即可满足日益增长的有机负荷及新的出水总磷指标要求(低于1 mg/L,通过生物除磷即可实现)。为期1年的运行数据表明，升级后系统的出水水质可稳定达到目标要求，实现了生物除磷及ZeeLungTM池内的同步硝化反硝化。ZeeLungTM生物膜优先进行硝化，平均传氧速率为12.0 g/(m2·d)，在平均硝化速率为2.1 g/(m2·d)的条件下，80%的传氧用于硝化，在保持传氧能力的前提下确保氨氮及总氮的同步去除效果。半经验动力学模型可用于模拟ZeeLungTM的硝化速率，其温度系数接近于1，表明水温对ZeeLungTM硝化速率的影响很小。
- Abstract:
- ZeeLungTM membrane aerated biofilm reactor (MABR) technology has been successfully applied in wastewater treatment plant (WWTP) of Yorkville-Bristol Sanitary District (YBSD) in Illinois, USA, and it has become the largest MABR WWTP in the world currently. The original aerobic activated sludge system was transformed into the A2O process system by ZeeLungTM MABR process. ZeeLungTM cassettes were installed in the retrofitted anoxic tanks to meet the increasing organic loading and new effluent total phosphorus (TP) limit(less than 1 mg/L, by biological phosphorus removal)without building new biological tanks. One-year operational data demonstrated that the effluent quality of the upgraded system could achieve the target stably, and the biological phosphorus removal and simultaneous nitrification and denitrification in ZeeLungTM tank were realized. ZeeLungTM biofilm prioritized nitrification. The average oxygen transfer rate (OTR) of ZeeLungTM was 12.0 g/(m2·d). When the average nitrification rate (NR) was 2.1 g/(m2·d), more than 80% of OTR were utilized for nitrification, indicating that stable nitrification and simultaneous total nitrogen (TN) removal were achieved under the premise of maintaining the oxygen supply capability. The semi-empirical kinetic model well predicted the NR of ZeeLungTM, and the temperature coefficient was close to 1, indicating that water temperature had little influence on NR of the ZeeLungTM.
相似文献/References:
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