CAJ | 학술논문

针对脱水污泥厌氧堆肥周期长的问题，构建微生物燃料电池型厌氧堆肥系统（ microbial fuel cell-anaerobic com-posting， MFC-AnC），在厌氧堆肥（ anaerobic composting， AnC）的基础上利用生物产电加速污泥降解的同时回收电能．采用电化学方法考察MFC-AnC系统运行性能，系统运行35 d，获得开路电压0．84 V，最大功率密度5．3 mW/m3，内阻80Ω．通过对MFC-AnC系统运行期间污泥理化性质的分析发现，生物产电可促进AnC系统中污泥的减容效果，脱水污泥含水率由88％降至82．3％．MFC-AnC系统中脱水污泥SCOD含量高于AnC系统，VS/TS值略低于AnC系统，说明生物产电可以促进脱水污泥水解和对可生化降解有机物的利用，加速污泥的减量．系统运行15～20d，污泥中SCOD、溶解性碳水化合物和蛋白质溶出效果最好，VS的利用率最高，生物产电加速污泥有机物利用的效果最明显．
침대탈수오니염양퇴비주기장적문제，구건미생물연료전지형염양퇴비계통（ microbial fuel cell-anaerobic com-posting， MFC-AnC），재염양퇴비（ anaerobic composting， AnC）적기출상이용생물산전가속오니강해적동시회수전능．채용전화학방법고찰MFC-AnC계통운행성능，계통운행35 d，획득개로전압0．84 V，최대공솔밀도5．3 mW/m3，내조80Ω．통과대MFC-AnC계통운행기간오니이화성질적분석발현，생물산전가촉진AnC계통중오니적감용효과，탈수오니함수솔유88％강지82．3％．MFC-AnC계통중탈수오니SCOD함량고우AnC계통，VS/TS치략저우AnC계통，설명생물산전가이촉진탈수오니수해화대가생화강해유궤물적이용，가속오니적감량．계통운행15～20d，오니중SCOD、용해성탄수화합물화단백질용출효과최호，VS적이용솔최고，생물산전가속오니유궤물이용적효과최명현．
With the problem of long cycle of dewatered sludge anaerobic composting ( AnC) technology, microbial fuel cell-Anaerobic composting ( MFC-AnC) system had been built, which utilized bioelectrogenesis to enhance the sludge degradation and power recovery simultaneously. This paper investigated the MFC-AnC system performance with dewatered sludge as substrate using electrochemical methods, which indicated that the working time was 35 d, the maximum power density of MFC-AnC system was 5.3 mW/m3, the open circuit potential (OCP) was 0.84 V and the internal resistance was 80Ωwith potassium ferricyanide as its electron acceptor. The physicochemical char-acteristic of sludge has been investigated during the whole operation period. The sludge water content of MFC-AnC system reduced from 88%to 82.3%, reflecting better volume reduction effect than AnC system. The result indicated that bioelectrogenesis could promote dewatered sludge water content decreasing. During the operation period, SCOD content in MFC-AnC system was higher than AnC system, and VS/TS value was lower, illustrating bioelectrogene-sis could enhance dewatered sludge hydrolysis ,organic matter biodegradation and accelerate sludge volume reduc-tion. During 15~20d of system uptime, SCOD content, soluble carbohydrate and protein in the sludge were dis-solved most, and VS utilization ratio was the highest, with the most obvious utilization effect of bioelectrogenesis en-hancing organic matter in dewatered sludge.