电极面积对无质子交换膜微生物燃料电池协同去污能力的影响  

Effect of electrode area on collaborative removal of pollutant by membrane-less microbial fuel cells

作　　者：冉春秋[1] 李海燕 王冰[1] 孙红杰[1] 李隽截[1] 孙佳楠[1] 

机构地区：[1]大连民族学院环境与资源学院,大连116600 [2]辽宁省大连市金州新区环境保护局,大连116600

出　　处：《环境工程学报》2013年第2期563-567,共5页Chinese Journal of Environmental Engineering

基　　金：中央高校基本科研基金(DC12010219)

摘　　要：以间距是180μm的不锈钢网为电极,构建了单室型无质子交换膜微生物燃料电池(MFC)污水处理系统。分别驯化、培养厌氧消化菌和反硝化菌,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,研究了电极面积对污染物协同去除能力的影响。当电极面积为45 mm×100mm和45 mm×50 mm时,两系统的开路电压最大值分别为(182.8±6.2)mV和(161.8±5.4)mV,COD、NH4+-N和NO3--N最大去除率分别为96.5%、99.7%、99.7%和85.4%、92.2%、97.9%;出水中NO2--N的含量分别低于(0.072±0.006)mg/L和(0.084±0.008)mg/L。这表明电极面积大的系统具有较好的有机污染物和含氮污染物协同去除能力。A wastewater treatment was constructed based on single-chamber membrane-less microbial fuel cell （MFC） , and with stainless steel meshes at interval of 180 p^m as the electrodes. Anaerobic digestion bacteria attached to the surfaces of anode electrode was designed as bio-anode to remove organic pollutants, and denitrif- ying bacteria grown on the surface of cathode electrode acted as bio-cathode to remove nitrogenous pollutants. The effect of electrode area on collaborative removal of pollutant about COD, NH4 -N and NO3^- -N by the treatment system was studied. The highest open circuit voltage of the system with electrode area about 45 mm × 100 mm and 45 mm × 50 mm was （ 182.8 ± 6.2） mV and （ 161.8 ± 5.4） mV, respectively. The maximum removal rates of COD, NH4-N and NO3^--N were 96.5% , 99.7% and 99.7%, respectively, for the electrode area about 45 mm × 100 mm, and those of the unit with 45 mm x 50 mm were 85.4% , 92.2% and 97.9% , respectively. The concentration of NO2^- -N in the effluent was respectively lower than （0. 072 ±0. 006） mg/L and （0. 084 ± 0. 008） mg/L for the two types of MFCs. These facts indicated that the capacity of collaborative removal of organic pollutants and nitrogenous pollutants by the system with bigger electrode area was better than those of the smaller system.

关 键 词：微生物燃料电池 单室型 电极面积 厌氧消化 脱氮 

分 类 号：X52[环境科学与工程—环境工程]