Water. Desalination + reuse
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BUSINESS MottMac named as engineer for Ghubrah IWP Mott MacDonald of the UK has been named owner's engineer for the US$ 350 million Ghubrah Independent Water Project (IWP) in Muscat, Oman. A consortium led by Malakoff International and including Sumitomo Corporation and Cadagua is developing the seawater reverse-osmosis (RO) desalination facility. The plant, which will be located next to existing water production facilities, will produce 42 MIGD (191,000 m³/d) of potable water to supply Oman's capital area. The consultancy will review the engineering, procurement and construction contractor's design, as well as supervise construction, commissioning and testing of the plant. Configuration of the plant includes submerged seawater intake and outfall, dissolved air flotation, dual-media filtration, cartridge filtration, doublepass RO, remineralisation via carbon dioxide and lime dosing, fluoridation and chlorination. Power for the plant will be drawn from the national grid. Richard Hall, Mott MacDonald's project director, said: "This is the second IWP in Oman. Mott MacDonald was also involved in the first at Sur, acting as technical advisor to the government from conception through to completion." The Ghubrah facility is expected to be completed by October 2014. Aquatech signs for Egypt's first ZLD plant Egypt's first integrated zero liquid discharge (ZLD) plant is to be built by Aquatech, under a contract from the Egyptian Ethylene & Derivatives Company (ETHYDCO) to provide a water treatment facility. The contract was signed in Cairo on 25 March 2013. The ZLD plant will be installed at ETHYDCO's petroleum derivatives manufacturing site in Alexandria. A subsidiary of Egyptian Holding Co for Petrochemical (ECHEM), ETHYDCO produces ethylene and other petroleum derivatives at this site. The plant designed and installed by Aquatech will treat wastewater from this facility and cooling tower blowdown to get cooling tower makeup water, boiler feed water and achieve ZLD. The technology provided by Aquatech is a microfiltration system, a High Efficiency Reverse Osmosis (HERO™) system, followed by Fractional Electrodeionization (FEDI™) and a brine concentrator, with finally a crystallizer and sludge treatment system. The project is expected to be completed in 13 months. Speaking on the project, Dr Karl Michael Millauer, senior vice president of Aquatech said, "This is a bold initiative undertaken by ETHYDCO, which will be the pioneer in installing a ZLD plant. The feed water to the plant will be a composite mix of treated effluent and water from the Nile River canal, having inconsistent water chemistry throughout the year. After a lot of due diligence done by ETHYDCO and its consultant Enppi, Aquatech's proposed schematic was selected because it can optimally treat this type of feed water. Canadian municipalities buy nanofiltration systems Nanofiltration drinking water production systems are to be supplied to two Canadian municipalities, Waterville and Eastman in Quebec, by H2O Innovation. The systems are among new contracts worth Can$ 3.7 million (US$ 3.64 million) announced by the company on 21 March 2013 which bring its order backlog for water treatment projects to Can$ 18.6 million (US$18.3 million). A real estate developer and constructor active in the State of New York has awarded a contract to H2O Innovation for the design, assembly, delivery and installation of a wastewater treatment system featuring the company's patented Bio-Wheel™ technology. As part of the other contracts, H2O Innovation will provide custom-built water treatment systems to industrial and commercial end-users, including a drinking water production unit for a workers' camp in Alberta, Canada. The company also announced final delivery to an oil & gas customer of a previously announced Can$ 9.4 million (US$ 9.24 million) water treatment package. | 8 | Desalination & Water Reuse | May-June 2013 IDE to design PRO power-generation pilot in Norway The Norwegian renewable-energy company Statkraft has hired IDE Technologies to design and later purchase and construct a 2 MW osmotic power-generation pilot plant in close cooperation with Statkraft. Dr Boris Liberman, IDE vice president and chief technology officer for membrane technology, said that the plant would be based on pressure-retarded osmosis, a variation of forward osmosis membrane technology. The plant, which will be capable of 24/7 operation in any weather, is scheduled for construction in Sunndalsøra, Norway, within a few years. Most of the plant will be based on existing technology used in desalination and other industries. However, IDE will design innovative solutions in several areas of the pilot plant, such as the energy-recovery system and the fresh water and seawater pretreatment. "We have been researching osmotic energy production for some time now, and intend to bring our R&D findings, our solid engineering solutions and our water expertise to this project," said Liberman. "This will result in driving costs down while increasing net energy output." In summer 2012, three years after its osmotic power prototype was opened at Tofte, Statkraft announced that it had started to assess a location for a possible pilot facility. Sunndalsøra was chosen because freshwater for the pilot facility can be collected from the outlet tunnel from the Aura power plant, while seawater can be pumped from a depth of 40 m further out in the fjord. Stein Erik Skilhagen, head of osmotic power at Statkraft, said, "The Tofte facility is in use for testing components, processes and membranes. We have selected IDE to design this pilot plant as we are certain that IDE's pioneering R&D and solid engineering practices, coupled with Statkraft's experience and capabilities, represent the best team to handle the technological and economic barrier to osmotic power generation."