Fig. 9
From: Olive mill wastewater treatment using vertical flow constructed wetlands (VFCWs)

The removals for planted and unplanted VFCW; a CODT, b CODd, c TPC, d TN, e ammonium, and f nitrate. The analysis started from May 8, 2023, until July 19, 2023. (SD = 0.13 – 1.48)