降温方式对厌氧氨氧化脱氮性能的影响  

Effect of cooling methods on nitrogen removal performance of anammox

作　　者：邵兆伟 董志龙[1] 曾立云[1] 彭永臻[2] 张永辉[1] 安芳娇 李慧茹 陈永志[1] SHAO Zhaowei;DONG Zhilong;ZENG Liyun;PENG Yongzhen;ZHANG Yonghui;AN Fangjiao;LI Huiru;CHEN Yongzhi(School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, Beijing University of Technology, Beijing 100124, China)

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]北京工业大学城镇污水深度处理与资源化利用技术国家工程实验室,北京100124

出　　处：《环境工程学报》2018年第5期1443-1451,共9页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51668033);兰州交通大学大学生创新实验项目(2017063)

摘　　要：考察一次性降温和阶梯式降温对厌氧氨氧化反应器(ASBR)脱氮性能的影响。一次性降温方式(30℃降至15℃),阶梯式降温方式(30℃降至25℃,再降至20℃,最后降至15℃)。温度30℃时,NH_4^+-N和NO_2^--N的去除率分别为97.3%和98.5%,总氮去除速率为5.12 mg·(g·h)^(-1),?NO_2^--N/?NH_4^+-N为1.33,厌氧氨氧化活性(SAA)为0.139 g·(g·d)^(-1)。一次性降温至15℃时,NH_4^+-N和NO_2^--N的去除率分别降至47.9%和55.1%,总氮去除速率降至2.74 mg·(g·h)^(-1),?NO_2^--N/?NH_4^+-N升至1.51,SAA降至0.071 g·(g·d)^(-1)。阶梯式降温至15℃时,NH_4^+-N和NO_2^--N的去除率降至51.6%和61.2%,总氮去除速率降至3.22 mg·(g·h)^(-1),?NO_2^--N/?NH_4^+-N升至1.48,SAA降为0.083 g·(g·d)^(-1)。阶梯式降温方式脱氮性能更佳。The denitrification performance of the anaerobic ammonia oxidation reactor（ASBR） under one time cooling and step cooling was compared and analyzed in this experience. One time cooling method（30 ℃ down to 15 ℃）, step cooling method（30 ℃ down to 25 ℃, then decrease to 20 ℃,finally fall to 15 ℃）. The removal rates of NH4^＋-N and NO2^--N were 97.3% and 98.5%, respectively, and the specific nitrogen removal rate was5.12 mg·（g·h）^（-1）, and the △NO2^--N/△NH4^＋-N was 1.33 and the specific anammox activity（SAA） was 0.139 g·（g·d）^（-1） when the temperature was controlled at 30 ℃. The removal rates of NH4^＋-N and NO2^--N reduced to 48.0% and56.1%, respectively, and the specific nitrogen removal rate dropped to 2.74 mg·（g·h）^（-1）, and the △NO2^--N/△NH4^＋-N increased to 1.51 and SAA decreased to 0.071 g·（g·d）^（-1） when the temperature was cooled one-time from 30 ℃ to15 ℃. However the removal rates of NH4^＋-N and NO2^--N reduced to 51.6% and 61.2%, respectively, and the specific nitrogen removal rate dropped to 3.22 mg·（g·h）^（-1）, and the △NO2^--N/△NH4^＋-N increased to 1.48 and SAA reduced to 0.083 g·（g·d）^（-1） when the temperature was cooled step by step to 15 ℃, which suggested that the nitrogen removal performance of step cooling method was superior to that of one-time cooling method.

关 键 词：降温方式 厌氧氨氧化 脱氮性能 厌氧序批式反应器(ASBR) 

分 类 号：X703.1[环境科学与工程—环境工程]