The dual function demands to aeration devices for oxidation ditch are clarified and the mechanism of both stirring and flow driving of self priming jet aerator are described.
阐明了氧化沟对曝气设备双重功能的要求； 论述了自吸式射流曝气器发挥搅拌推流作用的机理；
2
Provided that a dual-purpose nozzle capable of producing alternately such a spray and a plain water jet may be provided in substitution.
但可设置能交替地产生上述喷雾及普通水柱的两用喷嘴作替代。
3
Dual-jet is a new kind of high efficient jet, which is formed by combining round straight jet with circular conical swirling jet.