阴极HN-AD菌OTU数量对单室MFC启动的影响  

Effect of Cathodic HN-AD Bacteria OTU Number on Start-up of a Single-chamber Microbial Fuel Cell

作　　者：熊鑫溢 付国楷[1,2] 张玉浩 刘武平 左洛 XIONG Xin-yi;FU Guo-kai;ZHANG Yu-hao;LIU Wu-ping;ZUO Luo(College of Environment and Ecology,Chongqing University,Chongqing 400045,China;Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment,Chongqing University,Chongqing 400045,China;Nanchang Urban Planning&Design Institute Group Co.Ltd.,Nanchang 330038,China;Southwest Municipal Engineering Design&Research Institute of China,Chengdu 610081,China)

机构地区：[1]重庆大学环境与生态学院,重庆400045 [2]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [3]南昌市城市规划设计研究总院集团有限公司,江西南昌330038 [4]中国市政工程西南设计研究总院有限公司,四川成都610081

出　　处：《中国给水排水》2024年第15期36-43,共8页China Water & Wastewater

基　　金：校企联合研究课题(2023Ⅵ-KT-02-Ⅱ)。

摘　　要：设计了新的方法驯化取自榨菜废水处理厂的活性污泥,获得了异养硝化-好氧反硝化(HN-AD)菌OTU数量分别为1500和7500的HW1、HW2两种活性污泥。以高盐榨菜废水为处理对象,设置了HN-AD菌OTU数量分别为0、1500、7500的三组实验(S1、S2、S3),对比研究了阴极接种污泥HN-AD菌OTU数量对单室MFC启动的产电及污染物去除性能影响。结果显示,S3实验组启动单室MFC具有较好的脱氮性能,产电结束后NH_(4)^(+)-N及TN的去除率分别达到了(90.13±2.55)%与(90.83±1.46)%。S1实验组的最高输出电压[(0.4972±0.0335)V]、最大功率密度(11.59 W/m^(3))、最大电流密度(56.35 A/m^(3))、产电周期(116 h)及库仑效率[(16.27±0.47)%]均大于S2和S3,但是前者的NH_(4)^(+)-N及TN去除率分别仅为(6.84±1.09)%与(6.20±0.60)%,均低于后者。HN-AD菌OTU数量对单室MFC启动时的COD去除性能无显著影响。A novel approach was developed to acclimate activated sludge from a mustard wastewater treatment plant,resulting in the acquisition of HW1 and HW2 activated sludge with heterotrophic nitrification-aerobic denitrification(HN-AD)bacteria OTU numbers of 1500 and 7500.Three sets of experiments(S1,S2 and S3)were conducted with different OTU numbers of HN-AD bacteria(0,1500 and 7500)for high salinity mustard tuber wastewater treatment,and the impact of HN-AD bacteria OTU number of the cathode-inoculated sludge on the power generation and pollutants removal performance during the start-up of a single-chamber microbial fuel cell(MFC)was compared.In the S3 experimental group,the single-chamber MFC exhibited superior nitrogen removal efficiency,with NH_(4)^(+)-N and TN removal rates reaching(90.13±2.55)%and(90.83±1.46)%,respectively,upon completion of electricity generation.The maximum output voltage[(0.4972±0.0335)V],the maximum power density(11.59 W/m^(3)),the maximum current density(56.35 A/m^(3)),the power generation period(116 h),and the Coulomb efficiency[(16.27±0.47)%]of the S1 experimental group all exceeded those of S2 and S3.However,the NH4+-N and TN removal rates of the former were only(6.84±1.09)%and(6.20±0.60)%,respectively,which were lower than those of the latter.The HN-AD bacteria OTU number did not exert a significant impact on the COD removal efficiency during start-up of the single-chamber MFC.

关 键 词：高盐榨菜废水 微生物燃料电池 异养硝化-好氧反硝化菌 OTU数量 

分 类 号：TU992[建筑科学—市政工程]