Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
www.alfalaval.com
www.alfalaval.com
AlfaFlashNext Generation ZLD Technology
EnviroTech 2019
Calgary, Alberta
Patrick Horner
Global Technology Waste Evaporation and ZLD
Slide 2dksophr / 2019-04-16
www.alfalaval.com© Alfa Laval
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)
Slide 3
dksophr / 2019-04-16
www.alfalaval.com© Alfa Laval
What is AlfaFlash
Slide 4
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.
www.alfalaval.com© Alfa Laval
What is ZLD?
Reducing industrial wastewater quantity and maximize recycling as
much as technically AND economically practical.
Slide 5
dksophr / 2019-04-16
Source:
Wikipedia
www.alfalaval.com© Alfa Laval Slide 6
dksophr / 2019-04-16
Confidential
www.alfalaval.com
Minimum vs Zero Liquid Discharge
© Alfa Laval
www.alfalaval.com
Slide 7
MLD• Liquid Effluent
• < 40 wt% Total Solids
• Evaporator Only
ZLD• Solid Effluent
• < 85 wt% Total Solids
• Evaporator + Solids Dewatering
www.alfalaval.com© Alfa Laval © Alfa Laval
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
www.alfalaval.com
ZLD Toolbelt
www.alfalaval.com
Shale Gas
© Alfa Laval
www.alfalaval.com
Slide 9
CONVENTIONAL ZLD
www.alfalaval.com
SAGD (OTSG)
© Alfa Laval
www.alfalaval.com
Slide 10
CONVENTIONAL ZLD
80 to 85% Recovery >95% Recovery
www.alfalaval.com
Municiple Wastewater Treatment
© Alfa Laval
www.alfalaval.com
Slide 11
CONVENTIONAL ZLD
www.alfalaval.com
ZLD Evaporator Cost Feasibility
© Alfa Laval
www.alfalaval.com
Slide 12
www.alfalaval.com