新型反应器式BOD快速测定仪的性能研究  

A Novel Reactor-type BOD Analyzer for Rapid Estimation

作　　者：章一心[1] 王业耀[2] 王建龙[1] 徐润华[3,4] 孙中华 

机构地区：[1]清华大学核能与新能源技术研究院环境技术研究室,北京100084 [2]中国环境监测总站,北京100012 [3]清华大学北京清华工业开发研究院,北京100084 [4]江苏清大同和环境工程技术有限公司,江苏盐城224051

出　　处：《中国环境监测》2010年第1期38-41,共4页Environmental Monitoring in China

基　　金：国家高技术研究发展计划项目(2007AA06A404);江苏省重大科技成果转化资金项目(BA2009100)

摘　　要：BOD是反映水体有机污染的主要参数,广泛应用于水体监测、污水处理厂的运行以及水与废水处理的教学与研究工作。传统的BOD测量需要5天,耗时费力。因此,开发BOD快速测量方法及仪器十分重要。文章针对一种新型反应器式BOD快速测定仪在仪器化过程中需要解决的一些问题进行了探讨。包括固定化微生物颗粒制备、反应温度的优化、有无搅拌条件、仪器性能等。实验结果表明,最适宜的测量温度为30℃,可以利用微量曝气代替磁力搅拌,以方便仪器的制作。在对150mg/L的GGA标准液进行的5次测定实验中,测量结果的最大偏差≤10%,精密度为4.6%。该仪器的灵敏度与准确性均能满足BOD快速测量要求。Biochemical oxygen demand（BOD） is one of the most important and widely used parameters for characterizing the organic pollution of water and wastewater.However,the conventional BOD method requires not only 5 days,but also experiences and skills.Therefore,the research and development of BOD rapid measurement and equipment is a very attractive alternative.In this paper,several problems related to the instrumentation of BOD rapid analyzer,including the preparation of the immobilized microbial spherical particles,the optimization of the temperature for biochemical reaction,the necessary of stirring instrument,as well as the performance of the analyzer investigated.The experimental results showed that the appropriate temperature was 30℃,the magnetic stirrer can be replaced by aerating tube.For the 150mg/l GGA standard solution,five times repeated measurement indicated that the maximal deviation ≤10%,the precision was 4.6%.The technical parameters such as linearity,repeatability meet the demand of the commercial and practical application.

关 键 词：BOD BOD快速测定仪 固定化微生物 稳定性 重现性 

分 类 号：X851[环境科学与工程—环境工程]