The BDO we refer to is called Biological Oxygen Demand in Chinese. It refers to the mass concentration of dissolved oxygen required for the biochemical process in which microorganisms in water decompose organic matter under aerobic conditions. In order to ensure that the BOD detection data are comparable and consistent, staff members usually set a time period and also measure the consumption of dissolved oxygen. As for the relationship between BDO and COD, is there any? Details are as follows:

It should be known that in the process of sewage treatment, there are hundreds of organic substances. Staff need to analyze each of these substances one by one, among which BOD and COD are included. However, the more organic matter there is in the wastewater, the more nutrients it will consume. Therefore, BOD and COD are directly proportional. That is to say, the amount of oxygen consumed by the oxidation of chemical reagents in sewage is called chemical oxygen Demand (COD), while the amount of oxygen consumed by the oxidation of microorganisms in sewage is called biochemical oxygen Demand (BOD). Not only that, there are quite a few water quality analyzers of this kind for testing, because BOD and COD can comprehensively reflect the quantity of all organic matter in water. It is an important indicator for water quality testing. In addition, COD basically represents all the organic substances in wastewater, while the difference of BOD is that it refers to the biodegradable organic substances in wastewater. The difference between all COD and BOD can represent the non-biodegradable organic substances in wastewater.

BOD is actually an environmental monitoring indicator, with the aim of monitoring the pollution of organic matter in water. These organic substances can be decomposed by microorganisms, and in this process, oxygen is consumed. If the dissolved oxygen in the water cannot meet the needs of microorganisms, the water body will be in a polluted state. The BOD-8000- BOD rapid detector produced by Hangzhou Modi is an optical monitor with an automatic liquid flow path switching system. It can quickly determine the bod content in water, featuring high automation, stable performance and convenient operation. It is widely used in urban sewage treatment and the detection of various surface water, industrial wastewater and other industries.