Denitrification removal of nitric oxide in a rotating drum biofilter
Denitrification removal of nitric oxide in a rotating drum biofilter
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DOI：
10.1016/j.cej.2006.04.004
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发表时间：
2006-08
影响因子：
15.1
通讯作者：
Jiade Wang;Chengqiang Wu;Jianmeng Chen;Haijie Zhang
中科院分区：
文献类型：
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作者：
Jiade Wang;Chengqiang Wu;Jianmeng Chen;Haijie Zhang
以葡萄糖为碳源，采用转鼓生物过滤器（RDB）对合成气中的一氧化氮（NO）进行反硝化处理。在厌氧条件下，考察了转鼓转速和空床停留时间（EBRT）对脱氮效果的影响。当转鼓转速大于0.5rpm时，在一定的进料负荷下，随着转鼓转速的增加和EBRT的减小，传质对NO的去除率有一定的影响。在EBRT为65s、转鼓转速为0.5rpm的条件下，NO的去除率可达97.9%，进口NO浓度为524ppm。当有氧气存在时，NO的去除主要起反硝化作用和化学氧化作用。随着进气氧浓度的增加，反硝化作用减弱，化学氧化作用增强，最佳进气氧浓度为5.2%左右。
A rotating drum biofilter (RDB) was applied and evaluated for nitric oxide (NO) removal by denitrification from a synthesized waste gas using glucose as carbon source. The effects of drum-rotating speed and empty bed residence time (EBRT) on NO removal were investigated under anaerobic conditions. With the increase of drum-rotating speed higher than 0.5rpm and the decrease of EBRT at a certain feed loading rate, there existed a lower NO removal efficiency influenced by mass transfer. At an EBRT of 65s and a drum-rotating speed of 0.5rpm, NO removal efficiency was over 97.9% with inlet NO concentration of 524ppm. When oxygen existed, NO was removed as the function of denitrification of the main role and chemical oxidation. With the increase of inlet oxygen concentration, denitrification decreased and chemical oxidation increased and the optimal inlet oxygen concentration of about 5.2% was obtained.