Membrane technologies for wastewater treatment w gilbert o neal ph d p e
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Membrane Technologies for Wastewater Treatment W. Gilbert O’Neal, Ph.D., P.E. Membrane Biological Reactors ( MBr ). Membrane Filtration of Activated Sludge Mixed Liquor Eliminates clarifiers Removes solids and turbidity from effluent Reduced footprint Tolerates High SRT, MLSS

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Membrane Technologies for Wastewater Treatment W. Gilbert O’Neal, Ph.D., P.E.

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Membrane technologies for wastewater treatment w gilbert o neal ph d p e

Membrane Technologies for Wastewater TreatmentW. Gilbert O’Neal, Ph.D., P.E.


Membrane biological reactors mbr

Membrane Biological Reactors (MBr)

  • Membrane Filtration of Activated Sludge Mixed Liquor

  • Eliminates clarifiers

  • Removes solids and turbidity from effluent

  • Reduced footprint

  • Tolerates

    • High SRT, MLSS

    • Filamentous Bacteria


Zeeweed mbr

ZeeWeedMBr

  • https://www.youtube.com/watch?v=d0bcPBjNz2g

  • https://www.youtube.com/watch?v=H_sqYYBUZB0

  • https://www.youtube.com/watch?v=2R9tmlaP5Rc


Zero liquid discharge zld

Zero Liquid Discharge (ZLD)

  • Water Reuse (90-95%)

  • “Dry” Residual Disposal

  • System Components

    • Biological Treatment

    • Chemical Treatment

    • Macro Filtration

    • Membrane Filtration (UF and RO)

    • Evaporation (MEE)


Application

Application

  • Regulatory Restrictions

    • India

  • Resource Limitations

  • Discharge Limitations

  • Sustainability Goals


Membrane technologies for wastewater treatment w gilbert o neal ph d p e

ZLD PLANT FLOW DIAGRAM

Influent

Pump

Equalization

Filter

Heat Exchanger

Cooling Tower

Secondary Clarifier

UF

Biological Oxidation

Quartz Filter

Permeate to process – 93%

3- stage RO

Sludge Thickener

De-carbonator

Filter Press

Softener

Resin Filter

Reject - 7%

Sludge storage

Solar Pond

MEE

Air Evaporator


Zld schematic

ZLD Schematic


Ro system detail

RO System Detail


Zld mass balance

ZLD Mass Balance


Influent characteristics

Influent Characteristics

1.6 mgd


Biological effluent

Biological Effluent


Ro permeate

RO Permeate


Reject water

Reject Water

71,600 gpd


Zld cost

ZLD Cost

  • 100,000 GPD System

  • Capital Cost: $2,000,000

  • Operating Cost: $16/1000 gal.


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