铁炭微电解耦合生物反硝化脱氮性能及动力学研究  

Study on the performance and kinetics of nitrogen removal by iron-carbon micro-electrolysis coupled with biological denitrification

作　　者：李秋霖 谢翼飞[4,5] 刘国[1,2,3] 张丹 唐浩然[1,2,3] 邢云霄 李春雪 LI Qiu-lin;XIE Yi-fei;LIU Guo;ZHANG Dan;TANG Hao-ran;XING Yun-xiao;LI Chun-xue(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu 610059,China;State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution SEKL-SW,Chengdu 610059,China;Chengdu University of Technology,College of Ecology and Environment,Chengdu 610059,China;Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China;Environmental Microbiology Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Chemistry and Material Science,Sichuan Normal University,Chengdu 610068,China)

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]国家环境保护水土协同控制与联合修复重点实验室,四川成都610059 [3]成都理工大学生态环境学院,四川成都610059 [4]中国科学院成都生物研究所,四川成都610041 [5]中国科学院环境与应用微生物重点实验室,四川成都610041 [6]中国科学院大学,北京100049 [7]四川师范大学化学与材料科学学院,四川成都610068

出　　处：《应用化工》2021年第4期969-973,共5页Applied Chemical Industry

基　　金：四川省重点研发项目(2020YFS0021);中国科学院战略生物资源服务网络计划项目(KFJ-BRP-009);四川省环境治理与生态保护重大科技专项(2019YFS0504);四川省重点研发计划项目(2017SZ0177)。

摘　　要：将电化学法与生物法结合,构建微电解耦合反硝化(MEBD)脱氮体系,研究反硝化菌群(DB)、铁炭微电解(ICME)、MEBD对低C/N污水的静态脱氮性能的影响,采用一级动力学和莫诺德模型(Monod)拟合分析MEBD的脱氮过程。结果表明,DB、ICME和MEBD的脱氮性能具有显著差异(P<0.05),脱氮效率大小依次为:MEBD>DB>ICME,20 d时,三个体系对总氮(TN)的去除率分别为63.89%,46.59%,37.09%。一级反应动力学比Monod模型能更好地拟合MEBD脱氮过程,两个模型的相关性系数R^(2)分别为0.9972和0.9099。The electrochemical and biological method are combined to construct a micro-electrolysis coupled biological denitrification(MEBD)system.The denitrifying bacteria(DB),iron-carbon micro-electrolysis(ICME)and MEBD were carried out to study the static denitrification performance of low C/N wastewater.The first-order kinetics and Monod model were used to fit the denitrification process of MEBD.The results showed that the denitrification performance of DB,ICME and MEBD is significantly different(P<0.05),and the order of denitrification efficiency is:MEBD>DB>ICME.At 20 d,the removal rates of TN in the three systems were 63.89%,46.59%,37.09%.The first-order kinetics and the Monod model could fit the MEBD denitrification process well,and the correlation coefficients R^(2)of the two models were 0.9972 and 0.9099,respectively.

关 键 词：微电解耦合反硝化 低C/N 脱氮 一级反应动力学 Monod模型 

分 类 号：X131.2[环境科学与工程—环境科学] X172