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The experimental results for gas removal rate using Sand 40 and Sand 30 gave consistent results. This data has been essential in confirming that the apparatus is performing reliably. Yet the results deviate from the theoretical model, which predicts the theoretical bubble formation potential to be around 18mL/L for water that has been previously exposed to 1 atm gage pressure at temperature of 25 C. The model calculates the theoretical bubble formation potential as a function of the air pressure that the water equilibrated with prior to returning to atmospheric pressure. For further Since our data show the gas removal rate of only 5.09 mL/L and 2.01 mL/L with Sand 40 and Sand 30, respectively, it is possible that some of the system components could be redesigned to achieve better performance in producing air saturated water and consequently removing released air using the suspended matter. For additional analysis, we measured the dissolved oxygen concentration at the effluents from the aerator, sand filter, and bubble collector. Both the model and DO measurements have been instrumental in pointing out several improvements in design of the current apparatus and optimizing the conditions.
Consequently Based on further collaboration with the TA, the following design modifications have been advised to make:
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