【摘要】 考察了缺氧-厌氧—井型曝气工艺(AASTAP)对实际生活污水的脱氮除磷效果,并对其进行工程应用经济性评估。结果表明:AASTAP对生活污水具有高效的脱氮除磷性能,能够保持稳定的出水效果;通过变参数优化工艺运行条件,得到最佳运行工况:厌氧缺氧分段进水比为1∶3,SRT确定为13d,井型曝气池DO确定为3mg/L左右;通过经济性评估分析得出,与传统A2/O工艺相比,AASTAP对占地面积需求较低以及低操作管理运行成本,更适合在缺少土地利用面积的城镇推广。更多还原

【Abstract】 A long term operation of an anoxic-anaerobic-shaft type aeration process(AASTAP)was conducted to obtain its nitrogen and phosphorus removal performance as well as the economic analysis for its actual application.Results showed that AASTAP had a high removal efficiency of nitrogen and phosphorus with a stable effluent.The optimal operating condition was obtained by conducting variable parameters operation which contained:anaerobic/anoxic feed-step influent ratio1∶3,SRT 13 d,DO 3mg/L in shaft type aeration tank.Economic analysis indicated that AASTAP needed less space and lower cost of operation and management compared with the traditional A2/O process,which was more suitable to its actual application in the regions with less land space.更多还原