The integrated treatment technology can be divided into biological contact oxidation, SBR, AO,A2O, etc. The principle of the commonly used A/O treatment technology is that microorganisms reduce nitrate nitrogen and nitrite nitrogen in sewage into gaseous nitrogen to escape in the anoxic tank, and decompose refractory large molecules of organic matter into small molecules of easily degradable substances, which have the functions of denitrification, hydrolysis and degradation of some organic matters. In the aerobic pool, most of the organic matter was treated by microorganisms and entered the secondary sedimentation tank for mud and water separation.

AO process is an energy-saving biological treatment technology which degrades organic matter at the same time of denitration and greatly reduces oxygen demand. In order to maintain a high nitration rate, the reaction residence time is longer than the ordinary activated sludge process, the sludge sedimentation performance is better, the sludge growth rate is low, the remaining sludge quantity is less, the sedimentation performance is good.

       系列去除及主要依赖于设备中的AO生物处理工艺

。其中工作原理是在A级

，由于污水有机物浓度很高，微生物处于缺氧状态，此时微生物为兼性微生物

，所以A级池不仅具有一定的有机物去除功能
，减轻后续好氧池的
，有机物浓度降低，但仍有一定量的有机物及较高存在。为了使有机物得到进一步，同时在下能顺利进行
，在O级设置有机负荷较低的接触。在O级池中主要存在好氧微生物及自氧型细菌（）。其中好氧微生物将有机物分解成CO₂和H₂O；细菌（硝化菌）利用有机物分解产生的无机碳或空气中的CO₂作为营养源，将污水中的NH₃-N转化成NO₂-N、NO₃-N，O级池的出水部分回流到A级池，为A级池提供电子接受体，通过最终消除。

1、主体设备（厂家根据实际情况设计大小尺寸）

2、风机

3
、污水提升泵
4
、污泥泵

5、增压泵

6、二氧化氯发生器（消毒设备）