Figure 2 | Scientific Reports

Figure 2

From: The use of a hybrid Sequential Biofiltration System for the improvement of nutrient removal and PCB control in municipal wastewater

Figure 2

Physico-chemical characteristics of sewage at the outlet from the Wastewater Treatment Plant (W1) and sewage after flowing at particular zones of the Sequential Biofiltration System (W2–W8), central Poland. Thirteen samples were taken from each of eight stations, total number of analysed samples = 104. Whiskers include standard errors, and points represent the medians.

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