Question

Wastewater flow rate in a complete-mix activated sludge reactor having volume=2000 m3 and depth=8 m is 6000 m3/d. If the influent concentration of benzene is 200 g/m3 and that the air flow rate (at standard condition) is 100 m3/min, determine the fraction of benzene that can be stripped off if the complete mix activated sludge reactor is equipped with surface aeration system diffused-air aeration system also given that: oxygen diffusivity=2.11 10-5 cm2/s, benzene diffusivity=0.96 10-5 cm2/s, temperature=20 oc, n=1, henry's constant=5.4910-3 m3atm/mol.

Answer 1

so determine the fraction of benzene that can be stripped off if the complete mix activated sludge reactor is equipped with surface aeration system diffused-air aeration system also given that: oxygen diffusivity=2.11 10-5 cm2/s, benzene diffusivity=0.96 10-5 cm2/s, temperature=20 oc, n=1, henry's constant=5.4910-3 m3atm/mol.