Preliminary Treatment

Inlet pump station

Incoming wastewater flow is fed and controlled to the treatment plant.

Inlet pumping

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Pump station mixing

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Grit chamber

Grit is separated from the wastewater by gravity.

Grit removal pumping

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Grit chamber mixing

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Grit chamber aeration

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Retention basin

A retention basin works as a buffer volume at peak flows to help control a steady flow to the treatment plant.

Retention basin mixing

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Retention basin aeration

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Retention basin pumping

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Primary Treatment

Primary sedimentation

Sedimentation for removal larger solids and BOD.

Primary sludge pumping

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Secondary Treatment

SBR activated sludge treatment

Sequential Batch Reactor for biological treatment.

SBR mixing

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SBR aeration

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SBR waste activated sludge withdrawal

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Conventional activated sludge treatment

Complete mix process for biological treatment.

Anaerobic zone mixing

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Anoxic zone mixing

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Conventional aeration

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Conventional aeration sludge treatment mixed liquor recirculation

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Oxidation ditch activated sludge treatment

Oxidation ditch for biological treatment.

Horizontal flow mixing

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Oxidation ditch aeration

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Oxidation ditch mixed liquor recirculation

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Secondary sedimentation

Sedimentation of activated sludge.

Return activated sludge pumping from sedimentation

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Waste activated sludge withdrawal from sedimentation

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Sludge removal

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Secondary flotation

Flotation of activated sludge.

Sludge withdrawal from flotation

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Sludge reduction and lysing

Chemical activated sludge disintegration

Sludge disintegration and oxidation

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Odor reduction

Chemical odor control of activated sludge

Odor reduction

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Tertiary Treatment

Effluent pumping

The treated wastewater is discharged to the recipient.

Effluent pumping

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DAF

Flotation clarification after wastewater aeration lagoons or Moving Bed Bioreactor (MBBR) attached growth biological system to remove total suspended solids (TSS) and associated biochemical oxygen demand (BOD).

Solids removal clarification

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Nutrient removal clarification

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Filtration

Secondary treated wastewater is treated for solids removal

Gravity, granular filtration for solids removal

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Filtration and biological treatment

Secondary treated wastewater is treated for solids and nutrient removal

Gravity, granular filtration for solids and nutrient removal

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Disinfection

Inactivation of harmful microorganisms

UV disinfection

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Ozone disinfection

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Oxidation

Chemical degradation of effluent contaminants

Ozone oxidation

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Sludge Treatment

Gravity thickening

Gravity thickening of sludge in order to reduce sludge volume.

Gravity thickening supernatant recirculation pumping

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Thickened sludge pumping from gravity thickening

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Feeding to gravity thickener

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Mechanical thickening

Mechanical thickening of sludge in order to reduce sludge volume.

Feeding sludge to mechanical thickener

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Mechanical thickening supernatant recirculation pumping

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Thickened sludge pumping from mechanical thickening

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Flotation thickening

Thickening by means of flotation to reduce sludge volume.

Feeding to flotation thickener

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Flotation thickening supernatant recirculation

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Thickened sludge pumping from flotation thickening

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Digestion

Anaerobic or aerobic digestion of sludge in order to reduce sludge volume and achieve biological stability for disposal.

Aerobic stabilization

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Digester feeding

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Digester recirculation

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Digester mixing

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Digested sludge withdrawal

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Sludge storage

Storage of sludge to enable steady feeding to thickening and dewatering.

Sludge storage mixing

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Sludge storage feeding

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Sludge storage aeration

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Withdrawal of stored sludge

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External sludge

Importing of sludge from external sources.

External sludge pumping

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Dewatering

Dewatering of sludge in order to significantly reduce sludge volume.

Feeding sludge to dewatering unit

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Recirculation pumping of dewatering supernatant

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Dewatering supernatant aeration

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Dewatered sludge pumping

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