产生微气泡的方法，常用的有曝气气浮法和溶气气浮法两种。

气浮

另外还有 电解法为不常用。

电解法

电解法是向污水中通入5~10V的直流电，从而产生微小气泡，但由于电耗大电极板极易结垢，所以主要用于中小规模的工业废水处理。

曝气气浮法

曝气气浮法又称分散空气法，是在气浮池的底部设置微孔扩散板或扩散管，压缩空气从板面或管面以微小气泡形式逸出于水中。也有在池底处安装叶轮，轮轴垂直于水面，而压缩空气通到叶轮下方，借叶轮高速转动时的搅拌作用，将大气泡切割成为小气泡。

溶气气浮法

溶解在水中的气体，在水面气压降低时可以从水中逸出。有两种方法：①使气气浮设备的空间呈为真空状态，处在常压下的水流进池后即释出微气泡，称真空溶气法；②空气加压溶入水中达到饱和，溶气水流减压进入气浮池时即释出微气泡，称加压溶气法。后者较为常用。加压溶气水可以是所处理水的全部或一部分，也可以是气浮池出水的回流水，回流水量占所处理水量的百分比称回流比，是影响气浮效率的重要因素，须由试验确定。加压溶气法的设备有加压泵、溶气罐和空气压缩机等。溶气罐为承压钢筒，内部常设置导流板或放置填料。溶气罐出水通过减压阀或释放器进入气浮设备。

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Micro bubble method, commonly used have aeration gas air flotation and dissolved air flotation.

Air flotation

And electrolysis method is not commonly used.

Electrolytic process

Electrolytic process is to sewage zhongtong into 5 ~ 10 v direct current, resulting in a tiny air bubbles, but because power consumption big plate electrode fouling extremely easily, so it is mainly used for small and medium-sized industrial wastewater treatment.

Aeration gas float

Aeration gas float is also called the dispersed air method, is set in the bottom of the floating pool microporous diffusion plate or diffusion tube, the compressed air from the surface or tube surface in the form of tiny air bubbles escape out of the water. Also has is installed at the bottom impeller, shaft perpendicular to the surface of the water, and below the compressed air to the impeller, borrow the high-speed rotating impeller stirring effect, will be cut into small bubbles big bubbles.

Dissolved air air flotation

The gas dissolved in water, the water can escape from the water pressure decreases. There are two ways: (1) gets the floating shelf space for vacuum, pressure in the flow of water into the pool after the release of the micro air bubble, called vacuum absorption method; (2) air dissolving in water saturated pressure, reduced pressure in the gas dissolved air water floating pool or release the micro air bubble, called pressurized dissolved air method. The latter is more commonly used. Pressurized dissolved air water may be the whole or any part of the treated water, can also be a gas float pool water backflow water, return water percentage of processed water reflux ratio, is one of the important factors affect the efficiency of air flotation, shall be determined by test. Have the equipment pressure pump pressurized dissolved air method, dissolved gas and air compressor, etc. Dissolving tank as the confined steel cylinder, the internal often set the guide plate or place packing. Dissolving tank water through the relief valve or release into the gas pool.