悬浮载体生物膜反应器的亚硝酸型硝化研究  

Study on Nitrosation in Suspended Carrier Biofilm Reactor

作　　者：祁佩时[1] 王文斌[1] 高大文[1] 李正[1] 董有 綦峥[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]武汉安全环保研究院,湖北武汉430081

出　　处：《中国给水排水》2008年第9期8-12,共5页China Water & Wastewater

基　　金：全国优秀博士论文作者专项基金资助项目(2005044)

摘　　要：采用多孔聚合物载体生物膜反应器对亚硝酸型硝化进行了研究,考察了连续流情况下pH、DO和水力停留时间(HRT)对氨氮降解和亚硝化反应的影响。在进水氨氮浓度为420mg/L、温度为25℃的情况下,当HRT为24h、DO为2mg/L、pH值为8时,对氨氮的去除率>75%,亚硝酸盐氮的积累率达到了70%以上,实现了对氨氮的高效去除和稳定的亚硝酸盐氮积累。间歇试验结果表明,亚硝酸盐氮的生成速率为5.8684mg/(L.h),而硝酸盐氮的生成速率仅为0.9931mg/(L.h),即生物膜上氨氧化菌的数量和活性明显高于亚硝酸盐氧化菌的。A study on nitrosation was performed in a porous polymer carrier biofilm reactor. The effect of pH, dissolved oxygen （DO） and hydraulic retention time （HRT） on the ammonia nitrogen re- moval and nitrosation reaction was investigated. Under the conditions of the influent ammonia nitrogen of 420 mg/L, temperature of 25 ℃ , HRT of 24 h, DO of 2 mg/L and pH of 8, the removal rate of ammonia nitrogen and the accumulation rate of nitrite nitrogen can reach more than 75% and 70% respectively. The high-efficiency removal of ammonia nitrogen and the stable accumulation of nitrite nitrogen can be achieved. The batch test results show that the formation rate of nitnte nitrogen is 5. 868 4 mg/（L · h） while the formation rate and activity of ammonia of nitrate nitrogen is only 0. 993 1 mg/（ L · h ）. which means that the number oxidizers are significantly higher than those of nitrite oxidizers.

关 键 词：亚硝化 悬浮载体生物膜反应器 水力停留时间 溶解氧 PH 

分 类 号：X703.1[环境科学与工程—环境工程]