a method for the continuous removal of gaseous or liquid impurities from waste gases from chemical industrial processing plants . the waste gases are passed upwardly through a closed vessel containing absorbent mass in the form of a biologically active material containing a quantity of actinomycetes globisporus and acting as a substrate for microorganisms having an aerobic metabolism . a heap of absorbent mass is maintained in the vessel by removing absorbent mass from the bottom of the vessel and reintroducing the removed absorbent mass at the top of the vessel . penicillium concentrate is added to the absorbent mass in order to reduce the content of halogenated impurities in the waste gases .