Comparisons between several processes of urban wastewater treatment were made,and according to the climate and quality of waterof nanchang,the Carrousel oxidation ditch process was finally chosen.

• 对几种城市污水处理工艺方案作了比较,结合南昌市的气候特点、水质条件等,最终选择了卡鲁塞尔氧化沟工艺。