A continuous flow stirred tank reactor treats 0.25 m³/s of wastewater having 250 mg/L BODs at 20 ⁰C. The design mean cell residence time is 10 days. The effluent BODs is 6.2 mg/L, and the MLVSS is 3500 mg/L Also, assume 50% of substrate is converted into biomass (e.g., Y # 05), and the decay coefficient (ko) is 0.06 1/day The required reactor volume is more nearly:
(A) 3000 m³
(B) 3300 m³
(C) 4700 m³
(D) 5000 m³
(E) 30000 m³
