DISSOLVED GAS REMOVAL DEVICE, AND BIOLOGICAL TREATMENT DEVICE FOR ORGANIC MATERIALS TO BE TREATED AND BIOLOGICAL TREATMENT METHOD FOR SAME

摘要

A dissolved gas removal device (20) provided with a biological reaction tank (10) for biologically treating an organic material (1) to be treated comprising water and for generating digestive gas, which dissolved gas removal device (20) has an observation means (22) for observing the treatment conditions in the biological reaction tank (10) and a gas removal means (24) for removing dissolved gas (2), which hinders the biological treatment, from the organic material (1) to be treated, during the treatment; said dissolved gas removal device (20) removing dissolved gas (2) using the gas removal means (24) in accordance with observation results according to the observation means (22). A biological treatment device (100) having the biological reaction tank (10) and the dissolved gas removal device (20). A biological treatment method for organic materials to be treated using the biological treatment device (100).