Unpowered treatment device for sewage with low CN ratio

The utility model discloses an unpowered treatment device for sewage with a low CN ratio. The unpowered treatment device comprises a water feeding pipe, a first sewage treatment structure, a second sewage treatment structure and a second sewage treatment structure, the utility model provides an unpowered treatment device for sewage with low CN ratio, which has the characteristic of simple and practical structure, does not add a carbon source, performs oxygenation operation on the sewage by utilizing natural dissolution of air, does not start an air blower or does not start a few air blowers, can meet the oxygen demand of microorganisms for sewage treatment, achieves the treatment means of lowest power consumption, and is suitable for industrial production. And the use and maintenance cost is very low. 一种低CN比污水的无动力处理装置，包括上水管、第一污水处理结构、第二污水处理结构和第一污水处理结构。本实用新型提供一种低CN比污水的无动力处理装置，具有结构简单实用的特点，不投加碳源，利用空气的自然溶入对污水进行充氧作业，做到不开或者少开鼓风机，还能满足污水处理的微生物的需氧量，做到最低电耗的处理手段，使用维护成本非常低。