The purpose of this paper was to assess six years
of performance data from a vertical flow CW treating winery process water and domestic sewage at a
winery in the Niagara region of Ontario with an average hydraulic loading rate (HLR) of 22.3 mm d−1 and
an average chemical oxygen demand (COD) surface loading rate (SLR) of 34.0 g m2 d−1.