剩余污泥微生物燃料电池的产电性能及有机物降解与阳极生物分析  

Electricity generation,oxygenic compound degradation and microbiologic characteristics of microbial fuel cell using excess sludge

作　　者：李丹[1] 梁菲[2] 付融冰[1] LI Dan LIANG Fei FU Rongbing(Shanghai Academy of Environmental Science, Shanghai 200233 College of Environmental Science and Engineering,Tongji University 200092)

机构地区：[1]上海市环境科学研究院,上海200233 [2]同济大学环境科学与工程学院,上海200092

出　　处：《环境工程学报》2017年第2期1262-1268,共7页Chinese Journal of Environmental Engineering

基　　金：上海市环保局青年基金(沪环科(2012-10);上海市环境科学研究院青年基金(CX201404)

摘　　要：构建了以二沉池剩余污泥厌氧发酵上清液为阳极底物的微生物燃料电池(MFC),考察了电池的产电性能、污染物去除效率及阳极微生物种群特征。结果表明,厌氧发酵污泥MFC作为污泥资源化的一种新途径,具有可行性。在厌氧发酵的预处理条件下,MFC体系稳定运行期间输出电压最高可达0.65 V,最大功率密度达86.89 m W·m^(-2),库伦效率为(5.12±0.5)%;与此同时TCOD去除率为(50.6±3.5)%。污泥在厌氧发酵阶段产生大量挥发性脂肪酸(VFAs),它们作为产电微生物易于摄取的阳极底物,能够促进污泥中有机质的去除,进而提高污泥MFC的产电效果。由阳极微生物群落结构可推断:产电和非产电细菌具有协同作用,共同维持MFC的稳定运行。In this study,a microbial fuel cell（ MFC） was constructed by using the excess sludge fermentation from a secondary settling tank as anaerobic substrate. We employed the MFC to investigate the effects of electricity generation,contaminant removal,and the microbiologic characteristics in the anode chamber. The results of the investigation indicated that using the sludge MFC as energy source was an option to treat the anaerobic sludge. The exact results indicated that after the start-up phase,the peak voltages of the MFC reached 0. 65 V,the maximum observed power density was 86. 89 m W·m^（-2）,coulomb efficiency was（ 5. 12 ± 0. 5） %,and the maximum COD removal was（ 50. 6 ± 3. 5） %. Moreover,volatile fatty acids（ VFAs） were produced in the anaerobic fermentation stage. These could be applied as anode substrate by the microbes for promoting the removal of organic matter,thereby enhancing the production of electricity. It was inferred from the results of the analysis of the microbial community structure that the electric and non-electric bacteria cooperated to maintain the stable operation of the MFC.

关 键 词：微生物燃料电池 剩余污泥 厌氧发酵 产电性能 挥发性脂肪酸 群落结构 

分 类 号：X705[环境科学与工程—环境工程]