The seawater desalination process is a strong bet for developing regions like the Spanish Mediterranean, to satisfy the increasing fresh water demand, or the Canary Islands, being the desalination the most important artificial water resource. The main characteristic of the waste brine disposal resulting from the desalination process is its high salinity, and consequently, its higher density in comparison with that of the environment. Therefore, the discharge of the concentrated effluent into the sea may cause a negative impact in the sea water quality and its ecosystems, specially regarding the sea grass meadows that cover the Mediterranean coast. In order to make the development of the desalination plants sustainable, the Spanish Ministry of the Environment and Rural and Marine Affairs agreed to invest in Experimental Development Projects within its National Plan for Scientific Research, Development and Technological Innovation. The project entitled “Development and implementation of a methodology to red...

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