A 425-m 3 (15,000 ft 3 ) basin filled with wastewater is to be aerated with 10 spargers, each sparger using air at the rate of 7. . Find the time that is necessary to raise the dissolved oxygen level...

A 425-m³(15,000 ft³) basin filled with wastewater is to be aerated with 10 spargers, each sparger using air at the rate of 7.. Find the time that is necessary to raise the dissolved oxygen level in the wastewater from
 to
 mmol/L if the temperature of the water is 283 K and the depth of the water above the spargers is 3.2 m. The dissolved solids content will be low enough so that Henry’s law will be obeyed, with a Henry’ slaw constant of 3.2710⁴
atm/mole fraction.