A Study of the Treatment of Domestic Sewage by Intermittent Inner Loop Biological Fluidized Bed

There are a lot of advanced technologies for the treatment of wastewater. Considering the advantages and shortcomings of these technologies and our country's practical conditions , this paper puts forward an effective way of domestic sewage disposal Intermittent Inner Loop Bio fluidized Bed. After long time's experiment, this technology was proved to be efficient, economical and uncomplicated. When temperature is within the range from 32 to 16℃,the reactor reaches hydraulic retention time of 5.0～6.0 hours, the volume of aeration is 4.5～5.0 L/h,the interval of aeration time is 10.0 min/10.0 min,and the influent of CODc r is below 800.0 mg/L, the best removal efficiencies of CODc r, NH 3 (NH 4 +) N and SS can reach 95.0%, 63.0% and 98.5% respectively. At the same time, this way can also remove T N and T P partially.