Water. desalination + reuse

ContRACt&tenDeRneWS Doosan lands first SWRO job in Latin America business Doosan Heavy Industries & Construction announced its first seawater desalination plant project in the Latin American market on 25 August 2013. The company has received a notice to proceed on a US$ 103 million contract to construct a seawater reverse-osmosis (RO) desalination plant for industrial use at the Escondida Mine, the world's largest copper mine, in Chile. The Escondida seawater desalination plant will have a combined daily output of about 220,000 m3/d, sufficient for the daily water requirements of approximately 550,000 people, making it the largest RO project to be constructed in the Latin American region. Although Doosan has won orders for close to 30 large-scale seawater desalination plant projects in the Middle East thus far, this is the first time that it has secured a project in a region other than the Middle East. It won the project in an international bid after fierce competition with Valoriza Agua and Acciona of Spain, both of which have already established a presence in the Chilean market, Degremont of France and IDE Technologies of Israel. Under the deal, Doosan will take charge of the supply and installation of the plant's facilities and equipment as well as supervision for erection and commissioning. It will start the project next month, and production of water is expected towards the end of 2016. Carollo selected for Texas DPR study Carollo Engineers has been selected by the Texas Water Development Board to carry out detailed public health analysis of the first direct potable water reuse facility in the USA. Over the next year, Carollo staff will be performing detailed analysis and monitoring of the Big Spring advanced treatment facility, looking at advanced treatment performance, pathogens and trace pollutants. The Colorado River Municipal Water District will reclaim the wastewater effluent from the City of Big Spring, producing approximately 1.8 MGD (6,800 m3/d) of raw water, which will be blended with other raw water from surface water reservoirs. Although pilot testing of the membrane processes at the plant was conducted prior to the final design of the facility, it did not include the advanced oxidation process that typically follows membrane treatment. Additional testing at full scale and with a broader list of parameters will better characterize the quality and consistency achievable with advanced treatment. | 6 | Desalination & Water Reuse | August-September 2013 eRI chosen for Acciona project in Chile Spanish contractor Acciona Agua has chosen Energy Recovery Inc (ERI) energyrecovery equipment for its contract for the Minera CAP expansion desalination project in the Copiapó Valley in Chile's Atacama Region III, ERI announced on 16 July 2013. Acciona will install ERI's PX® Q Series pressure exchangers at the 21,830 m3/d plant, which has potential for expansion to 39,310 m3/d within the next year. "We chose ERI's PX Q Series device because it has the highest efficiency and availability of any other solution on the market," stated Julio Zorrilla, Acciona Agua's director of construction for the Copiapó Plant. "From a profit and environmental standpoint, it makes the most sense for this operation." MWH wins Texas desalination study MWH Global has been selected by the Guadalupe-Blanco River Authority (GBRA) in Texas, USA, to carry out the feasibility study to assess the development of ocean water desalination of up to 250 MGD (950,000 m3/d) as a regional water supply, including the option of co-located power generation facilities. This would dwarf the Carlsbad and Huntingdon Beach projects, currently progressing in California, which will be only 50 MGD (189,000 m3/d). MWH was one of 16 teams representing 64 national and international firms to initially respond to GBRA's request for qualifications, which was publicly posted in September 2012. The Texas General Land Office agreed to partner with GBRA and will contribute toward funding the study.

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