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Schematic diagram depicting the results of the clone library analyses performed on the samples obtained from the different functional parts of a full-scale RO plant. F was initially pretreated by the sequential application of coagulation, flocculation, sand filtration, UF, and CF processes. The two-stage RO system integrated ESPA-2 spirally wound M elements (Hydronautics ESPA) which were installed in a series inside pressure vessels.
