Asian Development Bank Desalination Overview and 24 MLD Jaffna SWRO Project May, 2015 Water Globe Co

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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