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采用SBR反应器处理污水，对剩余污泥的氮磷元素释放与回收进行了分析。稳定运行中COD去除率均为88?7％，出水达到城镇污水二级排放标准；出水氨氮、正磷酸盐浓度分别为9?8，2?7 mg／L；臭氧对剩余污泥氮、磷元素的吹脱作用均小于其氧化作用，吹脱作用对氨氮、磷元素释放率的贡献值分别＜6?50％和3?40％。经臭氧氧化后，氨氮浓度由9?56 mg／L 迅速增加至23?58 mg／L，释放率为146?75％；磷的浓度在2?93～3?30 mg／L变化，释放率为12?79％，臭氧氧化过程氨氮的释放作用明显高于磷，磷的总体浓度变化平稳，释放率呈现波动趋势；用磷酸铵镁法对臭氧处理上清液中氮磷进行回收，氨氮回收率达6?18％，磷回收率为97?8％，达到了对磷高效回收的目的。“,”By sequencing batch reactor ( SBR) , nitrogen and phosphorus release and recovery from sewage sludge are analyzed. At stable operation, the average COD removal rate is 88?7%, meeting the requirements of secondary emission standards of urban wastewater;The effluent concentration of ammonia nitrogen and orthophosphate is 9?8 mg/L and 2?7 mg/L, respectively;The effect of strip?ping action of ozone is lower than oxidation, the release rates of ammonia nitrogen and phosphorus under stripping action are less than 6?50% and 3?40%, respectively;After ozone oxidation, ammo?nia nitrogen concentration increases from 9?56 mg/L to 23?58 mg/L rapidly, with the release rate of 146?75%; Phosphorus concentration increases from 2?93 mg/L to 3?30 mg/L, with the release rate of 12?79%. The releasing effect of ammonia nitrogen is obviously higher than that of phosphorus in ozone oxidation process, and the concentration changes of phosphorus are smooth, showing a fluctua?ting trend;Magnesium ammonium phosphate method ( MAP ) is used to recover nitrogen and phos?phorus of ozone treatment, ammonia nitrogen recovery rate is 6?18%, and the phosphorus recovery rate is 97?8%, reaching the purpose of recycling phosphorus efficiently.