作　　者： (董一明）; (王晖）; (杨平）;

机构地区： 四川大学建筑与环境学院,四川成都610065

出　　处： 《环境科学与技术》 2017年第7期126-130,共5页

摘　　要： 试验采用厌氧流化床-生物阴极型双室微生物燃料电池(AFB-MFC)反应器,研究模拟废水的COD、NH3-N的去除效果和产电性能。结果表明,以葡萄糖为底物,在阳极室的COD容积负荷为5.0~10.0 kg/(m^3·d),HRT分别为16 h和24 h的条件下,AFB-MFC系统的厌氧流化床部分对COD的去除有很好的效果,COD去除率始终稳定在95%以上。阴极室对于NH3-N有很好的效果,平均去除率达到95%,阳极室对于NH3-N的去除在50%左右。系统在进水COD为5 000 mg/L,阳极室的COD容积负荷为5.0 kg/(m^3·d),阴极室为1.2 kg/(m^3·d)时产电效果最好。电压最高可达340 mV,能持续稳定产电70 h,功率密度为12.8 mW/m^2。另外,通过扫描电镜观察到厌氧生物颗粒中大部分为杆菌,其余为球形菌和丝状菌等。 A bench-scale experiment was conducted by using an apparatus of a biological-cathode-type double chamber microbial fuel cell （MFC） combined with an anaerobic fluidized bed （AFB） reactor, aiming at enhancing the MFC＇s power generation ability and removing pollutants （NH3-N, COD） from wastewater. As a result, the experiment showed that with glucose as a sort of substrate, under the operation condition： volume loading of COD in the anode chamber ranging from 5.0 to 10.0 kg/（m^3·d）, and HRT of 16 h and 24 h, respectively, the system of AFB-MFC presented a very good effect of COD removal, and COD removal rate remained at more than 95%, a good removal of NH3-N （95%） also took place in cathode chamber while removal of NH3-N in the anode chamber is about 50%. Furthermore, when the system was operated under the condition as the influent COD concentration being 5 000 mg/L, the COD volume load in the anode chamber, 5.01 kg/（m^3· d）, and in the cathode chamber, 1.19 kg/（m^3^d）, the best power production effect could be achieved, the voltage being high up to 340 mV, which sustained for 70 h, and the power density reached 12.8 mW/m^2. In addition, most of the anaerobic granules were formed by bacillus in AFB reactor, and the rest were spherical bacteria and filamentous bacteria according to the scanning electron microscopy.

关 键 词： 微生物燃料电池 废水处理 产电