奥贝尔氧化沟工艺改造成AAO工艺的反硝化脱氮实例分析

Analysis of nitrogen removal of denitrification of Orbal oxidation ditch process transformed into AAO process

大同某污水处理厂设计处理能力为40 000 t/d,原水处理工艺采用奥贝尔氧化沟工艺,因原处理工艺存在诸多问题,因此在2020年升级改造成了AAO工艺,通过实际运行,对两种工艺冬季最不利于进行反硝化的出水总氮数据进行对比分析,改进后的AAO工艺大大提升了反硝化脱氮效率。

The design treatment capacity of a sewage treatment plant in Datong is 40 000 t/d.The Orbal oxidation ditch process is adopted for the raw water treatment process.Due to many problems in the original treatment process,it is upgraded to AAO process in 2020.Through the actual operation,the total nitrogen data of the two processes which are most unfavorable for denitrification in winter are compared and analyzed.The improved AAO process greatly improved the efficiency of nitrogen removal of denitrification.