Fig. 6: Change in nutrient concentration through the trickling filter (dots = samples). | npj Clean Water

Fig. 6: Change in nutrient concentration through the trickling filter (dots = samples).

From: Production of biostable drinking water using a lab-scale biological trickling filter enriched with hydrogen-oxidizing bacteria

Fig. 6

Values < 0 indicate a lower concentration in the outgoing water (removal), whereas values > 0 indicate an increase in the concentration of the outgoing water (addition). Box plot centre line, median; box limits, upper and lower quartiles; points, all data points.

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