m A biological process reactor in Albuquerque, NM, has been characterized using the Tanks in Series model as ten CMFRs in series (see image at right). The total volume is 6300 cubic meters. The reactor geometry provides for run lengths of 30 m, channel widths of 3.5 m and basin depth of 5 m. The flow path through each reactor measures 90 m. For the critical condition, the influent flow is 5679 cubic meters per day and the recycle ratio is 0.95. Process modeling using the Tanks in Series model predicted volume-specific oxygen consumption rates shown in the table below. Side note: this oxygen consumption includes both the reduction of chemical oxygen demand and nitrification processes. The critical condition for supplying oxygen to the process is determined to be a summer day under a barometric low-pressure system with altimeter reading of 28.92 in Hg and wastewater temperature of 23 C. The diffusers are arranged to emit air at the 4.75 meter depth. A plot of performance curves for Environmental Dynamics, Inc. (EDI) T-series fine-bubble diffusers is included below. Curves shown graphically depict relations for SOTE versus diffuser air flow rate for various diffuser submergences. Interpolation between curves is required for submergence values falling between the curves. For redundancy and error margins, a decision has been made to reserve 30% of the allowable air flow rate for the critical condition, thus, a diffuser flow rate of 7 SCFM/ft? will be used. goz 2 Theoretical tank # | r02 m. d) 1 -6.387e3 2. 3 4 5 6 -3.467e3 -2.223e3 -2.033e3 -1.993e3 -1.961e3 -1.910e3 -1.822e3 -1.654e3 -1.344e3 7 8 9 10 3. (10) From the results of part 2, determine the total air flow rate (in SCFM) to be routed to each theoretical reactor. 4. (10) Determine the number of diffusers (62x762 EPDM) required for each of the ten regions of each pass of the reactor, representing the ten theoretical tanks in series. Also compute the diffuser spacing in diffusers per square meter of reactor floor for each of the ten theoretical tanks in each pass