摘要
沉积物微生物燃料电池(SMFC)作为一种原位底泥修复技术近年来广受关注。与传统的原位生物修复技术相比,其结构简单,能够在降解沉积物中有机污染物的同时输出电能,具有广阔的应用前景。以河底淤泥为研究对象,利用含碳蜂巢格室结构作为阳极,碳布和石墨毡为阴极,构建并成功启动两个400 L的大尺度沉积物微生物燃料电池装置,对电池的产电特性以及淤泥中总有机碳和总氮的变化进行了研究。实验结果表明,碳布阴极电池的最大功率密度是石墨毡阴极电池的最大功率密度的两倍。经过36 d的运行,碳布阴极和石墨毡阴极电池的总有机碳分别下降4.33%和10.52%,总氮分别下降54.4%、41.67%。
As an in-situ sediment remediation technology,sediment microbial fuel cell(SMFC)has attracted much more attention in recent years.Compared with the traditional in-situ bioremediation technology,SMFC can degrade the organic pollutants in the sediment and output electric energy has a more simple structure,which has a broad application prospect.Two large-scale sediment microbial fuel cells(SMFC)of 400 L were built in order to remove the pollution of the sludge from the estuary.The SMFC was used by the honeycomb with carbon mesh as anode and used by the carbon cloth and graphite felt as cathode respectively.The electricity production performance of the devices,the changes of total organic carbon(TOC)and total nitrogen(TN)in the sludge were investigated.The results show that the maximum power density of the battery with carbon cloth as cathode is twice that of the battery with graphite felt cathode.After 36 days,TOC in the sludge of cells with carbon cloth as cathode and graphite felt as cathode decreased by 4.33%and 10.52%respectively,and TN decreased by 54.4%and 41.67%respectively.
作者
胡江灵
代建辉
孙竹腾
史高创
张金凤
HU Jiang-ling;DAI Jian-hui;SUN Zhu-teng;SHI Gao-chuang;ZHANG Jin-feng(The Fourth Engineering Co., Ltd. of China Railway 18th Bureau Group, Tianjin 300350, China;State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China)
出处
《水道港口》
2020年第6期725-730,共6页
Journal of Waterway and Harbor
基金
国家自然科学基金联合基金重点项目(U1906231)
广东省水利创新科技项目(2017-17)。
关键词
河口
淤泥
沉积物微生物燃料电池
产电性能
estuary
sludge
sediment microbial fuel cell(SMFC)
electricity production performance
