厌氧流化床微生物燃料电池同步除碳脱氮产电性能影响因素  

Influencing factors of AFB-MFC for simultaneous carbon nitrogen removal and electricity generation

作　　者：黄健盛[1] 杨平[2] 杨长军[2] 穆世江 穆斌 

机构地区：[1]重庆市环境科学研究院,重庆401147 [2]四川大学建筑与环境学院,四川成都610065 [3]重庆星河房地产开发有限公司,重庆402260 [4]重庆市农业机械鉴定站,重庆402160

出　　处：《环境污染与防治》2012年第5期28-34,共7页Environmental Pollution & Control

基　　金：国家科技支撑计划项目(No.2008BADC4B04)

摘　　要：研究了厌氧流化床微生物燃料电池(AFB-MFC)除碳脱氮产电性能的影响因素。结果表明:(1)AFB-MFC对NH4+-N的去除不起作用。电压下降主要是由于进水有机基质浓度下降造成。(2)不添加NO3--N时,在满足AFB-MFC脱氮所需的电子供体条件下增加进水COD/TN有利于AFB-MFC产电。(3)3种无机氮共存下,AFB-MFC在进水有机碳与无机氮质量比(C/N)不低于1.37时,对COD、NO2--N和NO3--N具有理想的去除效果。AFB-MFB在一定进水C/N范围内(1.37～2.50),能得到稳定的输出电压及功率密度。(4)固定进水C/N时,AFB-MFC在高碳氮负荷下仍能得到较理想的NO2--N、NO3--N、COD去除效果,AFB-MFC对NH4+-N去除效果不明显;增加碳氮负荷,AFB-MFC输出电压及功率密度没有明显的改变。(5)有机基质浓度不变下,AFB-MFC中充足的电子供体可保证较高的NO3--N、COD去除率。AFB-MFC输出电压及功率密度随着时间延长而先增加至稳定值后下降。The influencing factor of anaerobic fluidized bed microbial fuel cell（AFB-MFC） system for simultaneous carbon nitrogen removal and electricity generation were investigated.The results indicated that NH＋4-N can not be removed by AFB-MFC,the voltage drop of AFB-MFC system was caused by the decrease of organic substrate concentration.Feeding enough electron donor to AFB-MFC system without adding NO-3-N,the increase of COD/TN was benefited for electricity generation of AFB-MFC system;AFB-MFC presented perfect performance for COD,NO-2-N and NO-3-N removal when 3 inorganic nitrogen were coexistence in AFB-MFC and C/N less than 1.37;AFB-MFC could achieve stable output voltage and power density when influent C/N ranged 1.37-2.50.Fixing the inlet C/N of AFB-MFC system,the NO-2-N,NO-3-N,COD removal efficiency of the system was still desirable even under high carbon nitrogen load,while NH＋4-N removal efficiency was not satisfactory.The output voltage and power density of AFB-MFC system had not obvious change when increasing the carbon nitrogen load.Fixing the inlet organic substrate,the plenty of electron donor in AFB-MFC system could ensure the high NO-3-N,COD removal efficiency.The output voltage and power density of AFB-MFC system was increased to a stable value and then decreased with extension the operation time.

关 键 词：厌氧流化床微生物燃料电池 除碳 脱氮 产电 电子供体 

分 类 号：X703[环境科学与工程—环境工程]