Figure 2
From: Raw water biofiltration for surface water manganese control
Raw water (i.e., water feeding the control filters) dissolved oxygen concentration (a), unfiltered manganese and iron concentrations (b), pH (c) and TOC concentration (d) over time. Error bars represent standard deviation. Dashed lines represent the division between lake stratification and destratification. The gap in data represents the period of COVID interruption.
