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Complete Mix

Good Uses: » Very high organic

loading » Toxins

Poor Uses: » Control of filaments

Activated Sludge Process Alternatives

» Oxidation ditch » Sequencing Batch Reactors » Membrane Bioreactors » Many other

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Oxidation Ditch

Influent Return Sludge

Oxidation Ditch

Secondary Clarifier

Rotors

Oxidation Ditch

Aeration is done by surface aerators

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Sequencing Batch Reactors

Sequencing Batch Reactors

Decanter

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Membrane Bioreactor (MBR)

Membrane Bioreactor (MBR) Hollow Fiber Technology

Membrane modules replace secondary clarifiers