螺旋曝气器具有由马达（12）驱动并在其端部承载混合元件（13）的轴（10）。 轴（10）倾斜地伸入水中。 混合元件（13）的浸入深度（D）至少为50厘米。 由鼓风机贯通轴（10）穿过其中空气通道的压缩空气其压力为0至35毫巴比对混合部件判决（13）的水的压力的浸渍深度（d）下的（19）供给。 结果，废水的更好的深度通风得以实现并且降低了为此目的应用的能量。

The Schraubenbelüfter comprises one of a motor (12) driven shaft (10) carrying at its end a mixing member (13). The shaft (10) extends obliquely into the water. The depth (D) of the mixing member (13) is at least 50 cm. The through shaft (10) therethrough air duct by a fan (19) air is supplied, the pressure is 0 to 35 mbar smaller than the case of the immersion depth (D) at the mixing member (13) prevailing water pressure. This improves the deep aeration of wastewater is achieved and reduces the energy to be applied for this purpose.