METHOD FOR TREATING WASTE LIQUID AND DEVICE THEREFOR

摘要

PURPOSE:To adequately perform a decomposition treatment of a harmful substance in the gas which generates when photographic processing waste liquid is heated and evaporated and also to simply, efficiently and economically provide the device compact in size. CONSTITUTION:The mixture gas mixing the gas such as generated ammonia gas with air and is heated 11 is introduced to a catalyst reaction process 13 and is heat-exchanged indirectly for the temperature of the process and then is fed into the catalyst reaction process and the temperature of the mixture gas heated before the heat-exchanging is adjusted so that the temperature of the mixture gas after the heat-exchange becomes the setting temperature, then the reaction temperature of the catalyst reaction process 13 is controlled.