炭管膜曝气生物膜反应器SNAD脱氮研究  

SNAD for nitrogen removal using carbon tube membrane-aerated biofilm reactor

作　　者：王芳[1] 杨凤林[1] 宫正[1] 刘思彤[1] 胡绍伟[1] 练建军[1] 

机构地区：[1]大连理工大学环境与生命学院工业生态与环境工程教育部重点实验室,大连116024

出　　处：《环境工程学报》2009年第3期405-408,共4页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50578023)

摘　　要：以包裹无纺布的微孔炭管作为膜曝气生物膜反应器（MABR）的膜组件，进行了短程硝化，厌氧氨氧化和反硝化耦合脱氮（SNAD）研究。实验中，控制温度34±1℃，pH7．5～8．5，HRT8h，通过逐步降低膜内压力使反应器中的溶解氧由8mg／L逐步降低到0．5mg／L以下。实验采用亚硝酸细菌挂膜，然后接种厌氧氨氧化细菌，实现在单一反应器中同时发生短程硝化、厌氧氨氧化和反硝化耦合脱氮功能。结果表明，经过180d的连续稳定运行，氨氮去除率达到了93．4％，总氮去除率达到了92．5％，COD去除率达到97．2％，氨氮去除负荷0．6kgN／（m^3·d）。适合SNAD工艺的最佳C／N比为0．2～0．6，当COD浓度过高时，会抑制厌氧氨氧化细菌，使SNAD工艺的处理效果明显下降。A lab-scale membrane-aerated biofilm bioreactor （ MAtin） equipped, port around the gas-permeable carbon tube was developed for the removal of ammonium based on simultaneous partial nitrification, anaerobic ammonium oxidization and denitrification （SNAD）- The temperature, pH and HRT were controlled at 34 ＋ 1 ℃ , 7.5 - 8.5 and 8 h. By decreasing the air pressure in the carbon tube gradualreactor was decreased from 8 mg/L to 0.5 mg/L. Initially, the reactor was inoculated with nitrifly, DO in the SNAD system in one reactor. The reying biomass. Subsequently, anammox biomass was inoculated to start up sults showed that after 180 d of operation, 93.4 % of NH4^＋-N removal rate, 92.5 % of TN removal rate and 97.2 % of COD removal were achieved in MABR. The ammonium nitrogen removal rate was 0.6 kg N/（m^3 d）. The suitable C/N ratio is 0.2 - 0.6, and the higher COD will inhibit the Anammox bacteria and make the reactor performance worsen.

关 键 词：炭管膜曝气生物膜反应器 短程硝化 厌氧氨氧化 反硝化 

分 类 号：X703.1[环境科学与工程—环境工程]