Method for detecting biochemical oxygen demand

A biochemical oxygen demand and detection method technology, applied in the field of biochemical oxygen demand detection, can solve problems such as expensive, unsuitable for online monitoring, and environmental secondary pollution, and achieve easier removal, self-repair, and high biodegradation rate effect
CN102608181BActive Publication Date: 2014-03-26吉林市光大分析技术有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
吉林市光大分析技术有限责任公司
Publication Date
2014-03-26

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Abstract

The invention provides a method for detecting a biochemical oxygen demand. The method comprises the following steps of performing microculture on a microbe containing water sample from active sludge, surface water, domestic sewage or microbe containing industrial waste water, thus obtaining a microbial film; enabling a blank water sample and a target water sample to pass through the microbial film respectively, detecting and obtaining dissolved oxygen reduction current of the blank water sample and the target water sample, thus obtaining a dissolved oxygen reduction current difference value between the target water sample and the blank water sample; and obtaining the biochemical oxygen demand of the target water sample according to the dissolved oxygen reduction current difference value and a preset standard curve. According to the method, since the microbial film obtained by culturing the microbe containing water sample from active sludge, surface water, domestic sewage or microbe containing industrial waste water has high environment adaptation capacity, a buffer solution system is not required and the physiological activity can be maintained by taking one or more then one of running water, well water, dropping water and underground water as a medium.
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Description

technical field

[0001] The invention relates to the technical field of environmental protection, in particular to a method for detecting biochemical oxygen demand. Background technique

[0002] Biochemical oxygen demand (BOD) refers to the amount of dissolved oxygen consumed by microorganisms to decompose some oxidizable substances in water, especially organic substances. If the time for biological oxidation is five days, it is called five-day biochemical oxygen demand. (BOD 5 ). Biochemical oxygen demand is an important indicator for analyzing the content of organic pollutants in water bodies and one of the most important parameters in routine monitoring of water quality. The higher the value, the more organic pollutants in the water and the more serious the pollution.

[0003] At present, the dilution and inoculation method is generally used in the determination of biochemical oxygen demand in the world, also known as BOD. 5 However, this method is time-consuming, heavy...

Claims

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