To remove an offensive smell component from a condensate in a storage tank and to improve and maintain the quality of equipment.

This equipment has a condenser pipe 8 condensing vapor produced from garbage, a deodorizer 10 deodorizing the vapor and a storage tank 16 storing a condensate, and deodorization is executed by the deodorizer 10 before the vapor is condensed and liquefied in the condenser pipe 8. A high- temperature oxidizing atmosphere 12 is used in the deodorizer 10. The lower part of the condenser pipe 8 is made to communicate and connected with the outlet of the deodorizer 10 and a drain pipe 17, and the storage tank 16 is connected with the drain pipe 17.