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Confocal analysis of the biofouling on the filtration membrane of the Aldeno membrane bioreactor (MBR) wastewater treatment plants (WWTP). (a) bacterial cells (green fluorescence); (b) the biofilm exopolysaccharides in the matrix (red fluorescence); (c) the membrane fibers in reflection mode; (d) the superimposition of panels (a), (b) and (c).
