Biological Deodorization BoxHigh surface area bio-fillers, conducive to the attachment and growth of microorganisms, allow them to form a biofilm on the bio-fillers' surface in a suitable environment. The microorganisms within the biofilm utilize inorganic and organic substances from the waste gases as carbon and energy sources, sustaining their life activities by degrading malodorous substances. This process decomposes the malodorous substances into odorless byproducts such as water, carbon dioxide, and minerals, achieving the goal of VOCs purification treatment.