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中文摘要：
构建了双室微生物燃料电池(MFC),并应用于污水BOD的检测。优化了MFC型BOD传感器的检测条件,分析了传感器进行污水BOD检测的特征。结果表明,以A2/O污水处理工艺中厌氧段污泥进行接种,双室MFC型BOD传感器2周内完成启动,所产电流达到稳定。传感器的最佳检测条件为外接电阻500Ω,添加缓冲溶液并维持待测水样pH为7.0,添加35 mg/L的L-半胱氨酸作为吸氧剂维持阳极室厌氧环境,阴极室富氧水流量为20 mL/min。利用MFC产生的电流峰值准确检测污水水样BOD浓度,传感器检测范围为10~50 mg/L,检测时间小于3 h;利用MFC产生的电荷量准确检测污水水样BOD浓度,检测范围为10~100 mg/L,检测时间小于10 h。利用MFC电流峰值和电荷量检测污水水样BOD浓度,偏差均小于15%,传感器运行稳定,寿命较长。
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