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目前在西德汉堡、累根斯堡、巴赛尔等市正在试验一种新式虹吸管-空气垫虹吸管。在虹吸管中,借助于一个体积可以变化的空气垫,使之在流量小的条件下,达到必要的流速。借助喷射器,利用水的动力条件,在上部垂直井中向虹吸管的气垫中导入空气。空气与污水混合后,在水平虹吸管中进行分离,形成一个压力空气垫,并随水位的高低而变化。虹吸管的上、下部位均可避免
Currently, a new type of syphon-air pad siphon is being tested in West Germany, Hamburg, Regensburg, Basel and other cities. In a siphon tube, an air cushion with a variable volume can be used to achieve the necessary flow rate under low flow conditions. With the ejector, using the dynamic conditions of water, air is introduced into the air cushion of the siphon tube in the upper vertical well. After the air and the sewage are mixed, they are separated in a horizontal siphon to form a pressure air cushion and change with the level of the water. The upper and lower parts of the siphon tube can be avoided