微生物燃料电池处理剩余污泥及其产电特性

Treatment of surplus sludge and electricity generation with sediment microbial fuel cell

针对目前存在的剩余污泥处理问题,采用沉积型微生物燃料电池(SMFC)处理二沉池剩余污泥,考察了不同条件下其产电特性及污泥减量化情况.SMFC运行一个周期(60 d),无表面曝气,不投加缓冲溶液的条件下获得最大功率密度可达9.45 W/m3;表面曝气和投加缓冲溶液均可提高SMFC的产电性能.闭路运行SMFC一个周期后,TCOD、TSS、VSS去除率均显著高于开路状态,且底物中投加氧化物可以提高有机物的去除率.微生物燃料电池可以用来实现剩余污泥的减量,并同时产生电能.

In order to dissolve the problem of surplus sludge, sediment microbial fuel cell （SMFC） was used to dispose surplus sludge in this paper. The electricity generation and the reduction of surplus sludge were analyzed in different conditions. After one period operation （60 d） , the maximum power density reached to 9.45 W/m3 in the conditions of no aeration and no buffered solution addition. The performance of electricity generation can be improved by aeration and adding buffered solution. After one period closed circuit operation of SMFC, the TCOD, TSS and VSS removal efficiencies were significantly greater than the open circuit operation, and the removal efficiencies can be improved by adding oxide. SMFC can be used to reduce the amount of surplus sludge and produce the electricity simultaneously.