生物产电加速污泥湿地中有机物降解性能

发布时间：2018-07-05 05:06

本文选题：微生物燃料电池 + 污泥湿地处理系统　；参考：《哈尔滨工业大学学报》2016年08期

【摘要】：为解决污泥处理湿地(sludge treatment wetland,STW)污泥降解能力弱的问题,首次提出在STW系统中嵌入生物产电装制,以加速污泥湿地处理过程中污泥有机物的降解性能,同时回收污泥生物质能.启动以美人蕉为湿地植物的微生物燃料电池—污泥处理湿地系统(MFC-STW),通过电化学测量与有机物分析,考察不同进泥负荷下污泥湿地处理系统的有机物降解及产电性能.结果表明,MFC-STW系统的输出电压、内阻、功率密度均随进泥负荷增大而升高.系统的最大电压和最大功率密度分别为0.794 V和0.268 W/m3.在负荷期内,MFC-STW系统下层积存污泥含水率为84%,TCOD降解率为74%,较STW系统分别提高7%和11%.说明生物产电可促进污泥湿地处理过程中的污泥脱水和有机物降解性能.
[Abstract]:In order to solve the problem of the weak degradation ability of sludge in wetland (sludge treatment wet land, it is the first time to put biological production into the sludge system to accelerate the degradation of sludge organic matter in the process of sludge wetland treatment, and to recover the biomass energy of sludge at the same time. The microbial fuel cell sludge treatment wetland system (MFC-STW) with banana as wetland plant was started. The degradation and electrical properties of sludge wetland treatment system under different sludge loading were investigated by electrochemical measurement and organic matter analysis. The results show that the output voltage, internal resistance and power density of MFC-STW system increase with the increase of mud loading. The maximum voltage and power density of the system are 0.794 V and 0.268 W / m ~ (3), respectively. During the loading period, the moisture content of sludge in the lower layer of MFC-STW system was 84% and the degradation rate of TCOD was 74%, which was 7% and 11% higher than that of STW system, respectively. The results show that biological electricity production can promote sludge dewatering and organic degradation in sludge wetland treatment.
【作者单位】：哈尔滨工业大学市政环境工程学院;
【基金】：国家自然科学基金(51206036;51378144)
【分类号】：X703

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