Ozone could be applied in several positions on Municipal WWTP: after physico-chemical or biological treatment (for disinfection and color removal), in activated sludge treatment process through external loop for aerobic stabilisation of excess biological sludge The transfer rate will depend on physical properties of gas/liquid, difference in concentration on either side of interphase and the rate of chemical reaction consuming the ozone mixing in the reactor Several models could be used to simulate general ozone transfer in aqueous phase However, it is always necessary to perform pilot tests and experiments, for various wastewater characteristics depending on position where the ozone will be used on WWTP.

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Ozone could be applied in several positions on Municipal WWTP:

after physico-chemical or biological treatment (for disinfection and color removal),

in activated sludge treatment process through external loop

for aerobic stabilisation of excess biological sludge

The transfer rate will depend on

physical properties of gas/liquid,

difference in concentration on either side of interphase and the rate of chemical reaction consuming the ozone

mixing in the reactor

Several models could be used to simulate general ozone transfer in aqueous phase

However, it is always necessary to perform pilot tests and experiments, for various wastewater characteristics depending on position where the ozone will be used on WWTP.