Ammonia-containing wastewater treatment apparatus and method of treating ammonia-containing wastewater using the treatment apparatus

摘要

Task An object of the present invention is to provide a waste water treatment apparatus capable of maintaining the ammonia concentration of treated waste water satisfying the discharge standard of ammonia even when various conditions fluctuate during operation and operation and adjusting the ammonia concentration of the combustion gas at the top of the column, An ammonia-containing wastewater treatment apparatus capable of avoiding explosion and maintaining it not exceeding the decomposition treatment capacity of the catalytic combustion apparatus, capable of sufficiently, economically and efficiently performing oxidative decomposition treatment of ammonia gas, And a method for treating ammonia-containing wastewater using the apparatus.SOLUTION: An object of the present invention is to provide a high-1) Control the temperature of the combustion gas at the top of the column to be kept at the set value by adjusting the amount of combusted gas that is recirculated to the bottom of the stripping tower2) A preheater for preheating the combustion gas by heat exchange and a heater for heating the combustion gas are provided separately from the catalytic combustion apparatus, and the temperature of the combustion gas supplied to the catalytic combustion apparatus is controlled at an appropriate temperature And3) Provide a draining device on the upstream side of the preheater and the heater to separate and remove water droplets accompanying the combustion gas and moisture to be condensedCan be solved.(FIG.