Biochemical pool oxygen consumption detection device

The utility model provides an oxygen consumption detection device for a biochemical pool, which relates to the technical field of water quality detection and comprises a floating piece, an oxygen consumption detection device and an oxygen consumption detection device, the floating piece is provided with an air inlet hole facing the mixed liquid level; the storage part is arranged on the floating part; the storage piece is provided with a storage cavity and an air outlet hole which are communicated with each other, and the storage cavity is communicated with the air inlet hole; the storage cavity is used for storing gas emerging from the mixed liquid level; and the detection assembly communicates with the gas outlet hole and is used for detecting the gas content in the storage cavity. The aeration gas is continuously filled into the storage cavity from the gas inlet hole, the content of each gas in the storage cavity is relatively balanced, the detection value of the detection assembly is relatively unchanged,