Problem (3) A settling analysis is run on sludge from an extended aeration activated sludge reactor with the following results: Concentration, mg/L 1000 2000 3000 4000 5000 6000 Velocity, m/h 2.8 1.4 0.4 0.2 0.1 0.06 Under equilibrium conditions, flow to the secondary clarifier (Qo) is 4200 m/d with solids content (C) of 2000 mg/L. For a preselected solids flux rate of 2.5 Kg/(m h), determine the area required for thickening (A) and the area required for clarification ?(Ac) and the diameter of the clarifier (D)?. Feed, QoCo Effluent, QeCe QuCu

Problem (3). A settling analysis is run on sludge from an extended aeration activated sludge reactor with the following results: Under equilibrium conditions, flow to the secondary clarifier (Q0) is 4200m3/d with solids content (C0) of 2000mg/L. For a preselected solids flux rate of 2.5Kg/(m2 h), determine the area required for thickening (AT) and the area required for clarification ?(AC) and the diameter of the clarifier (D)