Air stripping is widely used in the removal of ammonia from wastewater

but it is a time consuming process.In order to improve the efficiency of this process

air stripping of ammonia from water was performed in batch mode in a newly designed gas-liquid contactor—water-sparged aerocyclone (WSA).The effect of main process parameters on ammonia removal and mass transfer coefficient was investigated.WSA exhibited excellent mass transfer coefficient compared with traditional stripping tanks and packed towers.Of all the process parameters

liquid phase temperature and air flow rate were the main factors affecting the mass transfer coefficient.There was a critical value of air flow rate beyond which the mass transfer coefficient increased rapidly.Air flow rate and temperature of liquid phase were the most important factors affecting the air stripping rate of ammonia.Solid particles present in aqueous phase had little effect on the mass transfer coefficient.The air stripping process could be operated continuously for a longer time because there was no particle deposition commonly occurring in packed towers.