间歇曝气连续进出水一池系统处理城市污水

组合式间歇曝气系统是一种连续进水出水的一池系统，此系统能在无外加碳源条件下直接利用连续进入的城市污水作脱氮碳源，在反应器中采用较低的污泥负荷率，在较高的ＣＯＤ去除率的情况下取得良好的脱氮效果。

Intermittent Aeration System with Continuous Inflow and Outflow to Treat Sewage

As the novel and simple denitrification activated sludge process, the package intermittent aeration system (PIAS) had been developed in one pool which sewage could continuously be in flowed and outflowed without extra carbon resource. In PIAS, the carbon needed for denitrification came from original sewage, At the same titne, the low sludge loading was taken. The test results showed the denitrification of sewage in PIAS was remarkable. The land needed for treatment system and the energy consuption of PIAS was separately less 3 times and 24% than that of conventional activated sludge secondary treatment. The residual sludge was very less.