CAJ | 학술논문

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.
분별순화、배양염양소화균화반초화균,이간거180μm(80목)적불수강망위전겁,구건료단실형무질자교환막미생물연료전지(MFC)오수처리계통,염양소화균재양겁부착성막조성생물양겁양화거제유궤오염물,반초화균재음겁부착성막조성생물음겁반초화거제함담오염물,실현오수심도처리.재전지계통은정운행기간,최고개로전압위182.5 mV시,COD적거제솔위96.5%;NH4+-N화NO3?-N적거제솔분별고우93.5%화96.7%,출수중NO2?-N적함량저우0.072 mg?L?1.당양겁실화음겁실분개시,COD、NH4+-N화NO3?-N적최대거제솔지화분별위67.0%、76.9%화84.0%,균명현저우양겁실화음겁실련통적MFC계통적거제솔,저표명해MFC계통구유량호적유궤오염물화함담오염물협동거제능력.
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 180μm 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.