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Post on 02-Feb-2016
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Innovative Offerings for Membrane and Thermal
Desalination Plants
Asif Sheikh
Industry Development Manager
Innovations Marketing – Desalination
Nalco Gulf Ltd, Dubai, UAE
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Existing Offerings from Chemical Suppliers
Services
Chemicals
Programs
• Antiscalants approved for potable? • Antiscalant selection and dose ? • Global references ?
• Tried & Tested ? • Tailored ? • Case Studies ? • Value Adding / Differentiating ?
• Plant Survey / Audit conducted ? • Performance Reporting in place ? • Membrane Autopsy Services ? • Local on-site Service capabilities / support ? • Troubleshooting and Consultative Expertise ?
Are suppliers Adding Value ? - Asset protection - Maintaining production
and quality - Reducing O&M costs
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Innovative ANTISCALANT CHEMISTRIES
RO Membrane Desalination ANTISCALANTS
• Phosphorus-Free Scale Inhibitor (PC-1611T)
- Replacement for typical Phosphonate antiscalants
• Calcium Phosphate specific Scale Inhibitor (PC-1521T)
- Reduced need for depressing pH in water reuse applications
MSF and MED Thermal Desalination ANTISCALANT
• High Top-Brine-Temp & High Concentration Ratio Scale Inhibitor (PC-2040T)
T is the TRACER Fluoresence in all Nalco Desalination Antiscalants
that allows for the concentration to be measured instantaneously
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Innovative EQUIPMENT
Thermal (3DTfTD) Membrane (3DTfM)
Nalco Global Gateway
Fluorometer
3DT Controller
3DT Technology: Detect - Determine - Deliver
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Innovative COMMUNICATION PLATFORM
enVision: The Power of Information on Demand
Our new web-based data management platform and
system management dashboard to help optimize and
continuously improve your systems’ performance.
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Nalco’s Innovation Antiscalant for Thermal Desalination Plants
• Most MSF plants operate between a TBT of 95 to 115 degC
• Industry standard antiscalant dosing on MSF plants is 1.5 - 2.5 ppm
• 3-phase pilot MSF trial with Nalco’s Innovation Antiscalant conducted at SWDRI in Saudi Arabia
• Successfully tested at various operating conditions - SWDRI Certificates
• Most aggressive condition was successfully tested at a TBT of 119 degC, CR of 1.9 and down to a dosage of 0.8 ppm
• Significant opportunities for the industry;
- Reduce TCO using Nalco’s 3DTfTD unit to safely optimise PC-2040T antiscalant dose by UP TO 50%
- Increase production at higher TBT operation
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3DT for Thermal (3DTfTD) applicable for both MSF & MED Plants
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Sampling BEFORE
PC-2040T dosing
Sampling AFTER
PC-2040T dosing
Sampling in Distillate
(OPTIONAL)
OR
Make-up Line
(IMPORTANT)
Sampling in
Brine Blowdown
line (IMPORTANT)
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EXAMPLE SCHEMATIC for a MSF plant showing PC-2040T Dosing and Fluorometer sampling points
Distillate
Antiscalant Dosing Provision B
based on SW Make-Up Flow
SW Make-UP
Blowdown Fluorometer
Untreated Brine Recycle Fluorometer
Brine Recycle
Treated Brine Recycle Fluorometer
Blowdown
SW Make-Up Fluorometer
Heat Recovery section Heat Rejection section
Stage19
Stage16
Stage1
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• On-line monitoring of temperatures and turbidity using fluorometer sample points
• On-line monitoring of Brine Blowdown residual concentration of PC-2040T allows for continual verification of Concentration Ratio
• On-line changes in Seawater Turbidity monitoring enables 3DTfTD unit to adjust PC-2040T dose rate
• Connecting the Ball Cleaning system status (ON/OFF) to the 3DTfTD unit enables adjustment of PC-2040T dose rate
• Automatically web-generated reports on a daily basis consisting of various performance and parameter trends
Additional Features of the 3DTfTD unit
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Performance Management with Chemistry + Automation
Nalco has built this innovation on the
3D TRASAR technology platform
This combines novel sensor technology,
advanced treatment programs, modern
communication and expert consultancy