AMG (Attachable Micro-Bubble Generator) is a device to generate micro-bubbles. AMG is attachable and removable so when it is installed on a general circular booster pump, micro-bubbles are generated when the circular pump works. Pollutants in a flotation tank can be treated within a short time by the micro-bubbles.

The fluid that is pressurized through a general gear pump (with less than 4 hpa) makes a lot of bubbles when a spring type automatic switch installed in the AMG is opened. When the micro-bubbles and the pollutants meet, they are
floated and treated within a short time. The spring type automatic switch has a spring on its top so it has the same or the smaller modulus of elasticity than the inflowing pressure. Decompression is made by automatic switching, which naturally generates a lot of micro-bubbles.