纳米单质铁对厌氧氨氧化脱氮性能的影响  

Effect of nanoscale zero-valent iron on the denitrification performance of anaerobic ammonia oxidation

作　　者：马娇 曾天续 宋珺 党鸿钟 李维维[1,2,3,5] 陈永志 MA Jiao;ZENG Tian-xu;SONG Jun;DANG Hong-zhong;LI Wei-wei;CHEN Yong-zhi(Key Laboratory of Yellow River Water Environment in Gansu Province,Lanzhou Jiaotong University,Lanzhou 730070,China;School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Technical Center of Sewage Treatment Industry in Gansu Province,Lanzhou 730070,China;Development and Reform Ministry of China State Railway Group Co.,Ltd,Beijing 100844,China;Gansu Research Institute of Light Industry Co.,Ltd,Lanzhou 730070,China)

机构地区：[1]兰州交通大学,甘肃省黄河水环境重点实验室,甘肃兰州730070 [2]兰州交通大学环境与市政工程学院,甘肃兰州730070 [3]甘肃省污水处理行业技术中心,甘肃兰州730070 [4]中国国家铁路集团有限公司发展与改革部,北京100844 [5]甘肃省轻工研究院有限责任公司,甘肃兰州730070

出　　处：《中国环境科学》2022年第6期2619-2627,共9页China Environmental Science

基　　金：兰州交通大学甘肃省黄河水环境重点实验室开放基金项目(21YRWEK006);甘肃省青年科技基金计划(20JR5RA075)。

摘　　要：通过向厌氧氨氧化反应器(ASBR)中投加纳米单质铁(nZVI),考察了其对厌氧氨氧化反应(ANAMMOX)脱氮性能的影响.结果表明,在温度为(25±0.5)℃,pH值为7.5±0.5,进水NH_(4)^(+)-N和NO_(2)^(-)-N浓度分别为30.35mg/L和37.89mg/L条件下,分别投加0,10,50,100.200,500,1000mg/L nZVI时,总氮去除率(NRE)分别达到70.27%、74.25%、83.45%、90.16%、68.59%、57.18%、50.93%.用修正的Boltzmann、Gompertz、Logistic模型对其进行动力学分析,R_(2)值分别为0.9963、0.9944、0.9851,总氮(TN)出水浓度和NRE的预测值与实际值比较,其均方误差值分别为2.13、6.31、8.48和6.93、7.47、10.95.The effect of nanoscale zero-valent iron(nZVI)powder on the denitrification performance of anaerobic ammonia oxidation(ANAMMOX)reaction was investigated by adding nZVI into ASBR.When the concentrations of nZVI were 0,10,50,100,200,500,and 1000mg/L at the temperatures of(25±0.5)℃,and the pH value of 7.5±0.5,the total nitrogen removal efficiencies(NRE)were 70.27%,74.25%,83.45%,90.16%,68.59%,57.18%,and 50.93%under the influent NH_(4)^(+)-N and NO_(2)^(-)-N concentrations of 30.35mg/L and 37.89mg/L,respectively.The kinetic analysis was carried out by the modified Boltzmann,Gompertz,and Logistic models,the R^(2) values were 0.9963,0.9944,and 0.9851,respectively.The mean square errors of the effluent concentration of total nitrogen(TN)and NRE compared with the actual values were 2.13,6.31,8.48,and 6.93,7.47,10.95,respectively.

关 键 词：纳米单质铁 厌氧氨氧化 脱氮效能 动力学模型 

分 类 号：X703.1[环境科学与工程—环境工程]