2. An engineer graduated from UCR was hired to design a wastewater treatment process. Instead of using only an aeration tank, the smart UCR alumnus added an anoxic tank with internal recycle before the aeration tank (shown in the figure below). (a) List 3 advantages for this anoxic/aerobic (MLE) system with internal recycle compared to using an aerobic system only. (b) If the fraction of soluble BOD in the wastewater influent is increased by 30%, what type of bacteria would you expect to be greatly impacted in the system? How would the treatment process be impacted accordingly