【摘要】 介绍了广饶县污水处理厂一期、二期工艺即淹没式生物膜工艺和改良式A2/O工艺的特点及运行情况,分析了每个阶段对污染物的去除原理,并进行对比。结果表明:1)两个工艺对有机物的去除效果相当;2)改良式A2/O工艺对TN的去除效果优于淹没式生物膜工艺,主要是因为改良式A2/O工艺增加了内回流,增强了反硝化效果;3)两个工艺对TP的去除效果相当。更多还原

【Abstract】 It is introduced the characteristics and the operating conditions of the first and second processes in the Guangrao Wastewater Treatment Plant,which are the submerged biofilm process and the modified A2/O process.And it is analyzed the removal principles of the contaminations,which are compared.The results show that:(1) the removal effects of organic matter are about the same;(2) the TN removal effect of the modified A2/O process is better than that of the submerged biofilm process,it is because that the modified A2/O process increases the internal reflux,and it strengthens the effect of denitrification;(3) the TP removal effects of two processes are about the same.更多还原