交变负荷调控法培养好氧颗粒污泥的试验研究  

Cultivation of Aerobic Granules by a Method of Alternative Feed Loading

作　　者：李慧琴[1] 涂响[1] 孔云华[1] 刘虹[2] 竺建荣[1] 

机构地区：[1]北京师范大学环境学院,北京100875 [2]北京师范大学水环境模拟国家重点实验室,北京100875

出　　处：《环境科学》2010年第3期743-749,共7页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2006AA06Z318)

摘　　要：采用SBR反应器并以进料负荷交替变化为调控方法,探讨了好氧颗粒污泥的培养形成过程及形态理化特性.结果表明,在其它因素固定的情况下,采取进料COD 400、800、1 200 mg/L[即进料负荷0.96、1.92和3.84 kg/（m^3·d）]交替运行时,可以在SBR反应器中快速有效地培养出好氧颗粒污泥,达到稳定运行的反应器中MLSS和SVI分别为20-22 g/L和14-16mL/g.完全颗粒化时平均粒径为613.6μm.颗粒表层微生物相主要是球菌,颗粒内层以球菌和杆菌为主.成熟颗粒COD去除效率在95%以上,氨氮去除率稳定在97%.FISH法的分析表明,AOB基本分布在好氧颗粒污泥的表层,NOB除了分布于好氧颗粒污泥的表层外,在内层也有少量NOB.The formation process and morphological and physicochemical properties of aerobic granules were examined in a SBR system by a method of alternative feed loading.The results showed that the aerobic granules could be quickly and effectively cultivated using the alternative feeding COD 400,800,1200 mg/L [feed loading 0.96,1.92 and 3.84 kg/（m^3·d）] when other conditions were fixed.The developed granules of the reactor were maintained in MLSS 20-22 g/L and SVI 14-16 mL/g.The average size of completely granular particles was 613.6μm in diameter.The cocci occupied mainly in outer layer of granules,and both cocci and rods existed in inner layer of particles.The granules reached 95% COD removal and 97% NH4^＋-N removal simultaneously.The analysis of FISH showed AOB was distributed in outer surface of aerobic granules,and NOB existed in outer and inner layer small amounts of aerobic granules.

关 键 词：进料交变负荷 好氧颗粒污泥 SBR 细菌 FISH 

分 类 号：X703.1[环境科学与工程—环境工程]