PURPOSE: To make constitution of the title equipment simple and to eliminate the need for drainage treatment by sucking waste gas and blowing it together with an air flow into a cylindrical vessel and rotating the inside of the vessel in a swirly state at high speed while burning it with a heater and separating ashes produced by combustion with centrifugal force.

CONSTITUTION: Air is blown into a cylindrical vessel 21 through a feed pipe 22 protruded tangentially on the upper part of the vessel 21 and the air flow rotated in a swirly state is formed in the vessel. Waste gas to be treated is sucked by air feed through a Venturi 23 formed to the proper part of the feed pipe 22 and mixed in the air. Further in the feed pipe 22, a heater 25 is provided to the rear step of the Venturi 23. Furthermore an exhaust pipe 33 arranged to the center of the cylindrical vessel 21 is provided so that the lower end is opened in the inside of the vessel and the upper end perforates the upper part of the vessel 21. This equipment has not a movable part and can be easily constituted. Further, since it is a dry type, the separated and removed components are recovered as solid material and the need for drainage treatment is eliminated.