Photochemical reactor modeling: a case-study problem. Although radiation is important in heat transfer, an analogous model can be used in the design of photochemical reactors. The modeling of these reactors….
Determine the radius (m) of each biotower.
Two biotowers operating in parallel are to be designed to treat a flow of 16,000 m3/d. The BOD5 in the influent to the primary clarifier is 200 mg/L and the clarifier removes 35% of the BOD5. The minimum wastewater temperature is expected to be 14∘C. The value of k is assumed to be 0.210 (Lps)0.5/m2 at 20∘C and an effluent BOD5 concentration of 20 mg/L is to be achieved. The biotower depth = 6.1 m. Determine:
a. The radius (m) of each biotower.
b. The volume (m3) of biotowers.
c. The recycle flow (Lps/ft2) around the biotowers if the minimum wetting rate is 0.5 Lps/ft2.
d. The recycle ratio (R).