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….
Use the NRC equations for designing the trickling filter system and assume that the operating temperature is 18∘C.
A two-stage high-rate trickling filter with 100% recycle will be used to treat 5,000 m3/d. The influent BOD to the primary clarifier is 220 mg/L and the primary removes 33% of the incoming BOD. The effluent BOD should be 20 mg/L or less. Assume that the design BOD loading to the trickling filter system is 1.0 kg BOD/(d ⋅ m3), and a depth of 1.83 m will be used. Use the NRC equations for designing the trickling filter system and assume that the operating temperature is 18∘C. The coefficient 0.0561 in Equation (7.181) can be replaced with 0.443, and the organic loadings must be expressed in kg/d and the volume of media in cubic meters. Determine:
a. The diameter (m) of the high-rate trickling filter system.
b. The effluent BOD concentration (mg/L).