A continuous-flow completely mixed without biomass recycle biological treatment

A continuous-flow completely mixed without biomass recycle biological treatment process with a flow rate of 1000 m3/day and an influent substrate concentration (So) of 1000 mg/L achieves 99% substrate removal. The observed yield coefficient (Yobs) is 0.20 g biomass/g substrate and the hydraulic () and solids retentiontime (c) is 20 days.a) For the above-listed conditions calculate the bioreactor biomass concentration (mg/L) and the bioreactor volume (L).b) An equivalent biological process but with biomass recycle achieves the same substrate removal and observed yield coefficient as stated above has a solids retention time (c) equal to the retention time calculated in (a) above and a bioreactor biomass concentration equal to 7920 mg/L. Calculate the bioreactorvolume (L) for this system and compare it with the volume of the system without biomass recycle calculated in (a) above.