Biosensor For Determining The Biochemical Oxygen Demand (Bod) By Respirometry

摘要

A removable cartridge that contains an adjustable number of capsules inside of which there are adjustable masses of immobilized microorganisms, allowing the design of a simple, portable apparatus and the use of a reactor with less priming time. A circulating pump injects maintenance water into the reactor, and the used maintenance water is pumped out to a disposal location or device by the same pump. An air pump injects air into the maintenance liquid and the excess air is released through an airflow outlet. A dissolved oxygen sensor is used to take several measurements of the dissolved oxygen content of the sample water, and various formulas are used to analyze the results. Reactors of this type can be stored in cold allowing the replacement of the operating reactor easily.