双室型和单室型无质子膜MFCs协同去污能力的比较

Comparison of Pollutant Synergistic Removal Between Single-chamber and Two-chamber Membrane-less Microbial Fuel Cells

分别驯化、培养厌氧消化菌和反硝化菌,以间距180μm的不锈钢网为电极,厌氧消化菌在阳极附着成膜组成生物阳极氧化去除有机污染物,反硝化菌在阴极附着成膜组成生物阴极反硝化去除含氮污染物,进而构建双室型和单室型无质子膜微生物燃料电池污水处理系统。双室型和单室型系统的COD、NH4+-N和NO3--N最大去除率分别为89.2%、96.5%,96.4%、99.7%和98.5%、99.7%,出水中NO2--N的质量浓度分别低于1.08 mg.L-1和0.072 mg.L-1。这表明单室型结构比双室型结构具有更好的污染物协同去除能力。

Anaerobic digestion bacteria and denitrifying bacteria were cultured, respectively. The units of wastewater treatment were constructed for single - chamber and two - chamber membrane - less microbial fuel cells （MFCs） with the stainless steel meshes of an interval 180μm as the electrodes. Microbial films composed of anaerobic digestion bacteria and denitrifying bacteria attached to the surfaces of anode electrode and cathode electrode were designed as bio - anode and bio - cathode, respectively. The capacity of pollutant synergistic removal between two - chamber and single - chamber membrane - less MFCs was researched. The maximum removal rates of COD, NH4 ＋^ - N and NO3^ - - N were 89.2% , 96.4% and 98.5% for two - chamber unit, and those of the system about single - chamber unit were 96.5% , 99.7% and 99.7%. The content of NO2 ^- - N in the effluent was lower than 1.08 mg/L and 0. 072 mg/L, respec- tively. These facts indicated that the capacity of pollutant collaborative removal for single - chamber unit was better than that of two - chamber unit.