曝气是使空气与水强烈接触的一种手段,其目的在于将空气中的氧溶解于水中,或者将水中不需要的气体和挥发性物质放逐到空气中。换言之,它是促进气体与液体之间物质交换的一种手段。它还有其他一些重要作用,如混合和搅拌。空气中的氧通过曝气传递到水中,氧由气相向液相进行传质转移,这种传质扩散的理论,应用较多的是刘易斯和惠特曼提出的双膜理论。
整个曝气器仅由陶瓷曝气头、通气螺杆、螺帽三个主要部分组成,密封部位面积极小。
The aerator, only made of three major parts of pottery aerator, aerate screw and cap is simple in structure and of easy assembly. There is a very small sealed area.
结构简单、组装方便。整个曝气器仅由陶瓷曝气头、通气螺杆、螺帽三个主要部分组成,密封部位面积极小。
The aerator only made of three major parts of pottery aerator aerate screw and cap is simple in structure and of easy assembly. there is a very small sealed area.
设计了圆盘型涡凹曝气头和螺旋桨型涡凹曝气头,比较了两种类型曝气器的引气量、曝气气泡直径、粒径分布等。
The design of the disc turbine aerator and the oar turbine aerator are discussed. Their inspiratory capacity, air bubble diameter and distribution frequency are compared.
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