生物转鼓反硝化净化一氧化氮废气  

Denitrification process of nitric oxide in a rotating-drum biofilter

作　　者：张海杰[1] 罗阳春[1] 王家德[1] 吴成强[1] 陈建孟[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310032

出　　处：《中国环境科学》2006年第3期262-265,共4页China Environmental Science

基　　金：国家自然科学基金资助项目(20276070;20576124)

摘　　要：采用自行研制的生物转鼓（RDB）反应器处理NO废气,考察了RDB净化NO的反硝化效率.结果表明,在28℃、pH6.5～7.5、转鼓转速0.5r/min、营养液更新2L/d条件下,挂膜历时12d完成.随着转鼓转速的增加,生物膜和液膜表面更新速率提高,传质效率增加,NO反硝化效率提高;当转速》0.5r/min时,液膜增厚过度增加了传质阻力,NO反硝化效率降低.空床停留时间（EBRT）是决定反硝化效率的重要因素,当进气NO处理负荷一定时,随着EBRT由130s下降到26s,NO的净化效率也由99.7%下降至81.5%.Nitric oxide （NO） was treated adopting self-made rotating-drum biofilter （RDB） and the denitrification efficiency of RDB treating NO was studied. Under the conditions of temperature 28℃, pH 6.5 to 7.5, rotating speed 0.5t/min and fresh nutrient solution 2L/d, the biofilm became mature in 12d. Drum-rotating speed decided the surface renewal and liquid film thickness. With the increase of drum-speed, the renewal rate of biofilm and liquid film enhanced, mass transfer efficiency and denitrification efficiency increased. When drum-speed 〉0.5r/min, liquid film became thicker excessively, which resulted in higher mass transfer resistance and lower denitrification efficiency. Empty bed residence time （EBRT） was a key factor influencing the denitrification efficiency. When inlet loading was constant, NO removal efficiency decreased from 99.7% to 81.5% with EBRT dropping from 130s to 26s.

关 键 词：生物过滤 生物转鼓 一氧化氮 反硝化 

分 类 号：X701[环境科学与工程—环境工程]