单 位：
淮北师范大学计算机科学与技术学院;同济大学环境科学与工程学院
关键词：
微生物传感器;生化需氧量;有机污染物;在线监测
摘 要：
为弥补经典的五日稀释接种法(BOD5)耗时较长,不能及时反映水质污染状况的不足,设计了基于微生物传感器的生化需氧量(BOD)在线测量仪器。BOD生物传感器是溶解氧传感器和微生物膜的结合,利用微生物膜传感器测定BOD是一种快速有效测定水中可生化降解有机物的方法。论述了BOD生物传感器的工作原理,给出了在线BOD测量仪器的整体结构,设计了连续进样系统和信号处理电路,阐述了自动标定、温度控制、数据处理和有机物浓度计算的方法。设计的在线BOD测量仪器对标准值的相对误差在±5%以内,与经典的稀释接种法比较有较好的相关性,能够用于废水中可生化降解的有机物的快速测定和评价。
译 名：
On-line Biochemical Oxygen Demand Measuring Instrument Based on Biosensor
作 者：
Liu Sheng;Gao Hongwen;College of Computer Science and Technology,Huaibei Normal University;College of Environmental Science and Engineering,Tongji University;
关键词：
Microbial sensor Biochemical oxygen demand Organic pollutants On-line monitoring
摘 要：
In order to make up for the deficiency of traditional method of 5 d for dilution and seeding method(BOD5),the on-line biochemical oxygen demand(BOD) measuring instrument based on microbial sensor was designed.BOD biosensor was the combination of dissolved oxygen electrode and microbial film.Measurement of BOD using microbial membrane sensor was a fast and effective way for measuring biodegradable organic compounds in water.The principle of BOD biosensor was discussed.Whole structure of on-line BOD measuring instrument was given.The continuous sampling system and sensor signal process circuit were designed.The methods of automatic calibration,temperature control,and data process and concentration calculation of organic compounds were expounded.The relative errors of designed BOD on-line instrument with standard samples were less than 5%,and had a better correlation with the method of dilution and seeding.The designed instrument could be used for rapid determination and evaluation of biodegradable organic compounds in wastewater.
