单室型无质子膜微生物燃料电池协同去除COD和含氮污染物  

Collaborative Removal of COD and Nitrogenous Pollutant in a Single Chamber Membrane-less Microbial Fuel Cell

作　　者：冉春秋[1] 崔玉波[1] 李海燕 赵不凋[1] 安晓雯[1] 赵芾[1] 

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

出　　处：《高校化学工程学报》2013年第2期316-321,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：中央高校基本科研基金(DC12010219);国家自然科学基金(51278088)

摘　　要：分别驯化、培养厌氧消化菌和反硝化菌,以间距180μm(80目)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,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,实现污水深度处理。在电池系统稳定运行期间,最高开路电压为182.5 mV时,COD的去除率为96.5%;NH4+-N和NO3-N的去除率分别高于93.5%和96.7%,出水中NO2-N的含量低于0.072 mg L 1。当阳极室和阴极室分开时,COD、NH4+-N和NO3-N的最大去除率之和分别为67.0%、76.9%和84.0%,均明显低于阳极室和阴极室连通的MFC系统的去除率,这表明该MFC系统具有良好的有机污染物和含氮污染物协同去除能力。A single chamber membrane-less microbial fuel cell （MFC） was constructed in this paper for wastewater treatment, and the stainless steel meshes with the sizing grid of 180 μm were used as the electrodes. Anaerobic digestion bacteria and denitrifying bacteria respectively attach on the surfaces of anode electrode and cathode electrode, which were designed as bio-anode and bio-cathode. Organic pollutants are removed by anaerobic oxidation on the surface of anode electrode. These electrons and protons produced at the anode can transfer through an external circuit to the cathode and accelerate denitrification. During the stable operation of the MFC, the highest open circuit voltage is 182.5 mV, and the maximum removal rate of COD is 96.5%. Besides, the removal rates of NH4^＋-N and NO3^--N respectively exceed 93.5% and 96.7%, and the content of NO2^--N in the effluent is always lower than 0.072 mg·L^-1. Moreover, the total removal rates for COD, NH4^＋-N and NO3^--N in separated anode chamber and cathode chamber are lower than 67.0%, 76.9%, and 84.0%, respectively, which are obvious lower than those in the proposed MFC. Results indicate that this system has the capacity of collaborative and efficient removal of COD and nitrogenous pollutant.

关 键 词：微生物燃料电池 微生物膜 厌氧氧化 脱氮 

分 类 号：X52[环境科学与工程—环境工程] TM911.45[电气工程—电力电子与电力传动]