Fig. 2From: The bacterial community significantly promotes cast iron corrosion in reclaimed wastewater distribution systemsSEM micrograph of the cast iron corrosion scale at the 52nd week, magnification = ×20,000. a Black layer in the NaClOdisinfection reactor; b yellow layer in the NaClOdisinfection reactor; c black layer in the NONdisinfection reactor; d yellow layer in the NONdisinfection reactor; e black layer in the UVdisinfection reactor; f yellow layer in the UVdisinfection reactorBack to article page