Determine the methane gas production rate (m3/d) for the reactor from problem 11.4. Assume COD equivalent of VSS equals 1.42 kg COD/kg VSS.

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11.4) Design a UASB reactor to treat wastewater at 30°C from a food processing plant. The wastewater flow rate is 500 m3/d with a soluble COD concentration of 6000 mg/L. The design parameters are as follows:

   

Reactor effectiveness factor (E) = 0.85 Upflow velocity = 1.2 m/h Organic loading rate = Y = 0.08 kg VSS/kg COD kd = 0.03 d-1 %3D 12 kg SCOD/m d %3D %3D Pmax = 0.25 d-1 K, = 360 mg/L Height for Using the given information, determine the following: %3D %D gas collection = 3 m a. The reactor area and diameter b. The reactor liquid volume c. Liquid depth and total height of the reactor d. The average SRT (assuming 97% degradation of sCOD)