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RO Plant IESL 28-05-2015 DATASET 路 JUNE 2015
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172 1 AUTHOR: Saravanamuttu Subramaniam Sivakumar University of Jaffna 135 PUBLICATIONS 215 CITATIONS SEE PROFILE
Available from: Saravanamuttu Subramaniam Sivakumar Retrieved on: 23 December 2015
TA-8668 SRI: Rapid Assessment of Seawater Desalination and Other Alternative Water Sources for Jaffna Water Supply
Asian Development Bank
Desalination Overview and 24 MLD Jaffna SWRO Project May, 2015
Water Globe Consulting
Nikolay Voutchkov, PE, BCEE
Desalination – Where Are We Today? 16,000 Desalination Plants Worldwide – Technology 66.4 Million m³/day RO
23 Million m³/day Thermal Desalination
Thermal
ED
Other
4% 2%
34%
40 Million m³/day RO Desalination
60% 40 % of All Plants > 50,000 m³/day 65 % Installed Capacity Increase Expected by 2015
Largest plant in the world is in Melbourne Australia with capacity of 412,000 m³/day Maruthankerny plant capacity is 24,000 m³/day
Source: IDA Desalination Yearbook 2013-2014
Projected New Desalination Capacity in 2014 9.5 MM m続/day
Actual New Capacity in 2013 8.6 MM m続/day Source: WDR, July 2010
Desalination Trends The Desalination Market Has Higher Growth Rate than Any Other Water Market Segment
The 2013 Market Size of US$ 9.8 Billion Is Projected to Double by 2016
Membrane Desalination – Key Trends
SWRO Desalination Most Commonly Used;
Large - (over 60 MLD) and Mega - (over 200 MLD) Desalination Plants Are the Wave of the Future;
Most Large Urban Coastal Centers Worldwide Have Established a Target to Produce 25 % of their Drinking Water from Desalination;
Research &Development Activities are in 10-Year High – Likely to Yield Breakthroughs in Membrane and Desalination Technologies by 2015;
Large SWRO Projects Are Aiming at Sustainability – Use of Alternative Power Supply Sources is On the Rise
Desalination Market Drivers Water Scarcity Economic Growth
Population Growth
Main Desalination Market Challenges & Industry Response Challenge
Relatively High Fresh Water Production Costs
Industry Response
Accelerated Development of Higher Productivity RO Membranes and Lower Cost Pretreatment Systems and Plant Components Investment in Non-RO Technologies
High Energy Use
Environmental Impacts
Advances in Low Energy Desalination Technologies & RO Energy Recovery Systems
Coupling of Desalination Plants with Green Power Sources (Wind Power)
Comparative Costs of Other Water Supply Options
Water Production Costs (Medium & Large SWRO Plants)
Classification
Cost of Water Production (US$/m³)
Low-End Bracket
0.5 – 0.8
Medium Range
1.0 - 1.5
High-End Bracket
2.0 – 4.0
Average
1.0
Key Benefits of Desalinated Water
Drought-proof Water Supply
Human Health Benefits – Less Saline and Less Hard Water:
Relief and on Over-pumped Aquifers
Kidney Failure and Goal Bladder Stone Problems Resolved Removal of oil , bacteria, viruses and other contaminants Better Taste
More water for agriculture Reduction of aquifer salinity over time Recovery of aquifer levels and increase of the yield of household wells
High Quality Water Attractive to High-tech Industry – Semiconductors, Food, Pharmaceutical and Turism
Jaffna Desalination Project Current Status Six Alternative Sites in Jaffna Identified and Visited in September 2014 Two
Sites Selected After Preliminary Screening:
Martuthankerni/Pallai Kankesanthurai/Keerimalai
Initial
Feasibility Evaluation Completed in December 2014 - Martuthankerni/Pallai Site Selected as Preferred
Initially Investigated Plant Sites
Selecting the Plant Site Concentrate Disposal (Location, Environmental Impact & Costs)
Source Water Quality (Intake Location, Environmental Impact & Costs)
Type and Location of Key Water Users & Power Supply Source (Distance & Cost to Connect)
Key Factors Impacting Selection Site Conditions (Geotechnical, Climate, Soil Contamination, Endangered Species, Cost of Land)
Socio-economic factors
Selected Desalination Plant Sites
Martuthankerni/Pallai Site
Low Cost Desalination Plant Configuration
Alternative Low Cost Configuration
Initial Plant Layout
General Plant Layout
Plant Side View
Plant Street View
UF Membrane Pretreatment System
SWRO System
5-6 m
10 m
Intake – General Schematic
1000m
Intake and Outfall Configurations
-5m
- 10 m
Offshore Tower Intake Configuration 800 to 1000 m from shore
10 m 4-5m
10 – 12 m
2m
Wedgewire Screen Intake
Intake Pipe Laid on the Bottom
Intake Pipe with Tower - Buried
1000 m 500 m
Concentrate Disposal Outfall with Diffusers Designed to Reduce Salinity Down to 35 g/l of Ambient Levels within 50 m of the Discharge
Salinity Ocean 35 g/l Intake 28 g/l Discharge 50 g/l Inner lagoon 90 g/l
Summary of Plant Energy Use and Costs Parameter
Martuthankerni/Pallai
Kankesanthurai/ Keermalai
2.27 3.20
2.27 3.33
3.84(avg.)/4.80 (max)
4.00 (avg.)/4.97 (max)
Capital Costs, in million US$
46.3
48.1
Annual O&M Costs, in million US$/year
3.76
3.85
Annualized Capital Costs, US$/m続 (20 years loan @ 6 %)
0.46
0.48
Annual O&M Costs, US$/m続
0.43
0.44
Total Cost of Water Production, US$/m続
0.89
0.92
Average Energy Use, kWh/m続 RO System Total Plant (w/o Delivery) Total Plant Power Demand, MW
Jaffna Desalination Plant – Capital Cost Breakdown Construction Cost (CC) US$34.6 – 36.0 MM
RO System – 36% of CC
Pretreatment – 13% of CC
Post-treatment – 3% of CC
Storage Tank – 5% of CC Discharge Outfall – 8% of CC
Total Capital Cost US$46.3 – 48.1 MM
Intake – 12% of CC
Other Costs – 35% of CC
Energy Use of the Jaffna SWRO Plant
Pretreatment – 6% (0.15 kWh/m³)
RO System – 74% (2.4 kWh/m³)
Product Water Delivery 2% (0.1 kWh/m³)
Other Facilities 8% (0.25 kWh/m³)
Intake – 10% (0.3 kWh/m³)
Total Energy Use 3.20-3.33 kWh/m³ For TDS = 32 ppt & Temp. = 29°C
Jaffna SWRO Project O&M Cost Breakdown
O&M Cost US$0.43 – 0.44/m³
Concluding Remarks
Seawater Reverse Osmosis Desalination is Proven Technology with Over 20 Years of Worldwide Experience
Jaffna Desalination Project is Feasible
O&M Costs for the Fresh Water Production US$0.43-0.44/m³
Project Capital Cost – US$46 to 48 million
Project Construction Period – 24 months
–
Key Benefits of Desalinated Water
Drought-proof Water Supply
Human Health Benefits – Less Saline and Less Hard Water:
Relief and on Over-pumped Aquifers
Kidney Failure and Goal Bladder Stone Problems Resolved Removal of oil , bacteria, viruses and other contaminants Better Taste
More water for agriculture Reduction of aquifer salinity over time Recovery of aquifer levels and increase of the yield of household wells
High Quality Water Attractive to High-tech Industry – Semiconductors, Food, Pharmaceutical and Tourism
Benefits to Maruthankerny area
The high content of nutrients in the discharge will attract more fish.
New infrastructure developments (Roads, power supply etc)
Employment opportunities for local people.
Area will attract high tech industries.
High quality water supply for future generations.
Next steps
Establishment of Grievance Redress Mechanism Marine biological survey Contour survey of the bottom of the ocean Modeling of salinity dispersion and sediment transport Source water quality collection Meetings with public and stakeholders Project review by local and central environmental authorities (CCD, CEA, NARA & MEPA) and ADB Finalize the design of the intake and outfall Monitoring – before, during (24 months) and after construction and during operation
Questions ?
Nikolay Voutchkov, PE, BCEE Nikolay Voutchkov Water
Globe Consulting nvoutchkov@water-g.com