Ltk

B. Deep-Shaft, Activated-Sludge Process

B. Deep-Shaft, Activated-Sludge Process

Flotation Tank

Key:

A: Aeration E: Effluent I: Influent

PC: Primary clarifier PS: Primary sludge RS: Return sludge SC: Secondary clarifier WS: Waste sludge

FIG. 7.25.6 Activated-sludge process flow diagrams. A, Oxidation ditch; B, Deep-shaft activated sludge process.

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