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AlfaFlashNext Generation ZLD Technology

EnviroTech 2019

Calgary, Alberta

Patrick Horner

Global Technology Waste Evaporation and ZLD

Slide 2dksophr / 2019-04-16

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Why Minimize (Waste = Cost + Risk)

• Reduce Waste Transporation

• Reduces cost (trucking ≈ $3 / m3 / hr)

• Reduces risk of release (environmental liability)

• Reduces risk of transporation accidents (safety)

• Reduce Waste Disposal

• Reduces cost (disposal facility gate fee ≈ $15 / m3)

• Reduces risk of production limits due to disposal availability

• Reduce Water Intake Requirements

• Reduces cost (sourcing and transporation)

• Reduces risk of production limits due to water availability

• Convert Waste to Value Products or Energy (emerging trend)

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dksophr / 2019-04-16

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What is AlfaFlash

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dksophr / 2019-04-16

Confidential

• Forced circulation evaporator with a

specialized plate and frame heat

exchanger

• For NaCl based brines can operate with up

to 50wt% TS (Total Solids):

• 30wt% TDS (Dissolved Solids)

• 20wt% TSS (Suspended Solids)

• Coupled with dewatering equipment can

achieve up to 85wt% TS discharge.

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What is ZLD?

Reducing industrial wastewater quantity and maximize recycling as

much as technically AND economically practical.

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dksophr / 2019-04-16

Source:

Wikipedia

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dksophr / 2019-04-16

Confidential

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Minimum vs Zero Liquid Discharge

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MLD• Liquid Effluent

• < 40 wt% Total Solids

• Evaporator Only

ZLD• Solid Effluent

• < 85 wt% Total Solids

• Evaporator + Solids Dewatering

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PRE-TREATMENT

- Oil Removal

- TSS Removal

- Softening (Ca, SiO2)

PRE-

CONCENTRATION

- Organics

- Divalent Ions

- TDS

EVAPORATION

CONDENSATE POLISHING

- Ammonia Removal

- TDS Removal

- VOC Removal

DEWATERING

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ZLD Toolbelt

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Shale Gas

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CONVENTIONAL ZLD

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SAGD (OTSG)

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CONVENTIONAL ZLD

80 to 85% Recovery >95% Recovery

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Municiple Wastewater Treatment

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CONVENTIONAL ZLD

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ZLD Evaporator Cost Feasibility

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