Dear Vahid, All dissolution ...

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Dear Vahid,

All dissolution air reactors are sized in function of hydraulic retention time so when you exceed the maximum input flow the results will worsen. (If your car is sized for 4 people but you have 6 people to transport is better to change car)

The reactor geometry, the mixing intensity and the air diffusion system inside the reactor can change the HRT required.

To have an high flotation efficiency  is also essential to have an high quality air bubbles.