Author: Fredi Lokiec – EVP Special Projects – IDE Technologies Ltd. - Israel
This paper presents the business structure and some of the many technological features of the Sorek Project, which consists of the financing, design, construction, operation and transfer of a seawater desalination facility with a guaranteed production capability of 150 Mm3/year for a term of circa 25 years. The Bid Price of US¢ 58.5/m3 (as of October 1st 2009) offered by Sorek Desalination Ltd. (SDL), the consortium led by IDE Technologies Ltd. developing and constructing the Sorek Plant, is one of the lowest prices ever offered in a BOT project for seawater desalination.
Several factors contribute to the low water price offered by the Consortium:
• Contractual Structure with proper risk allocation
• Adaptation of SWRO technology for large-scale plants (pressure centers concept)
• Introduction of large diameter (16") membrane elements
• Innovative design incorporating vertical arrangement of membrane pressure vessels
• Advanced Energy Recovery System (low energy consumption)
• Self-Generating Energy Supply System (low electricity cost)
Creative structuring of a mixed NIS (New Israeli Shekel) and Euro Financing Plan
Boris Liberman Ph.D. CTO Vice President, IDE Technologies ltd.
Gal Greenberg Senior R&D Eng, IDE Technologies ltd.
For the last two decades the attention of companies leading the desalination market has been focused mainly on energy saving. Almost half of the energy invested in the seawater desalination process is now recovered. The process of recovering gauge pressure from SWRO desalination plants started 20 years ago using the Pelton wheel has now reached 95-96% efficiency using DWEER and ERI work exchangers. In parallel, the brine of seawater RO plants contains “green fuel” in the form of high osmotic pressure that goes to waste in the brine discharge to the sea.
The theoretical possibility of recovering osmotic pressure as mechanical work power was developed by Prof. Sidney Loeb 35 years ago. This theoretical value is 1.55 kwh per cubic meter of desalinated seawater.
Sliding Pressure Turbine Integrated with Seawater Desalination Facility (Multi-Effect Distillation - Med)
Author: Hagay Shemer - Process Engineer, Thermal Process Dept., IDE Technologies, Israel
Utilizing Available "coldness" From Liquefied Natural Gas (LNG) Regasification Process For Seawater Desalination
Author: Tomer Efrat - Team Leader, Thermal Process Dept., IDE Technologies, Israel
The Larnaca Desalination Plant was the first large scale sea water reverse osmosis plant that was built by IDE Technologies Ltd and is solely owned and operated by IDE staff. It is currently in the final year of a 10 year BOOT project (Build, Own, Operate, and Transfer). The plant has a current maximum design capacity of 64,000 m³/day.
Plant construction started in early 2000 and was commissioned and online by July 2001. The Original contract was for a design capacity of 48,000 m³/day, but has been upgraded twice since signing the original contract to its current capacity of 64,000 m³/day.
The plant fulfills all its contractual obligations with regard to quantities of water produced, specific energy consumption and quality of water according to W.H.O. and E.U. standards.