专利详情

专利名称	Method for detecting biochemical oxygen demand
申请号	US201214359037	专利类型	US
公开（公告）号	US9423373(B2)	公开（授权）日	2016.08.23
申请（专利权）人	中国科学院长春应用化学研究所	发明（设计）人	Liu Changyu;Dong Shaojun
主分类号	G01N27/26	IPC主分类号	G01N27/26;G01N33/18;G01N15/00
专利有效期	Method for detecting biochemical oxygen demand 至Method for detecting biochemical oxygen demand	法律状态
说明书摘要	The present invention provides a method for detecting biochemical oxygen demand. Active sludge, surface water, domestic waste water, or industrial waste water comprising microorganism is taken as a water sample with microorganism in the method provided by the present invention. The water sample with microorganism is cultivated to obtain a microorganism film. The blank water sample and the target water sample are made to pass through the microorganism film respectively. The dissolved oxygen reduction current values of the blank water sample and the target water sample are detected. The difference value between the dissolved oxygen reduction current value of the target water sample and that of the blank water sample is obtained. On the basis of the difference value and the predetermined standard curve, the biochemical oxygen demand of the target water sample is acquired. The method provided by the present invention adopts active sludge, surface water, domestic waste water, or industrial waste water comprising microorganism as the water sample with microorganism. The environmental adaptability of the prepared microorganism film is strong, so that one or more of tap water, well water, atmospheric water, or ground water may serve as medium to maintain the physiological activity with no need of providing a buffer solution system.