In the preliminary analysis of alternatives for stabilizing the WAS sludge from Sunset’s...

In the preliminary analysis of alternatives for stabilizing the WAS sludge from Sunset’s activated sludge plant your boss has asked you to design an anaerobic digester. Determine the volume of the digester, the flow rate of methane, and the volume of an external tank pressurized to 350 kPa. Use the data from Problem 20-17 and the following data for this design:

Problem 20-17

In the preliminary analysis of alternatives for stabilizing the WAS sludge from Sunset’s activated sludge plant, your boss has asked you to design an aerobic digester. The sludge flow rate is 62.3 m³/d. The solids concentration is 2.8%, and the specific gravity of the sludge is 1.01. Use the following data for the design: