Sewage plant tail water treatment method and system

The invention discloses a sewage plant tail water treatment method and system.The tail water treatment method comprises the following steps that parameter data of tail water are obtained, and the parameter data comprise total phosphorus, suspended solid concentration, total nitrogen and chemical oxygen demand; selecting a corresponding tail water treatment mode according to the parameter data, wherein the tail water treatment mode comprises the steps of carrying out precipitation treatment on the tail water, carrying out nitrogen removal treatment on the tail water and/or carrying out chemical oxygen demand removal treatment on the tail water; and the treated tail water is discharged to a clean water tank. Through data analysis, a customized treatment strategy and a discharging mechanism, the treatment mode can be flexibly adjusted according to the water outlet condition, pollution is efficiently removed, and the cost is saved. 本发明公开了一种污水厂尾水处理方法及系统，所述尾水处理方法包括如下步骤：获取尾水的参数数据，所述参数数据包括总磷、固体悬浮物浓度、总氮以及化学需氧量；根据所述参数数