Water quality parameters (and their removal efficiencies)were
calculated in concentration units and not in mass loads per unit
area, as evapotranspiration rates were not measured. Fig. 2 shows
the decreaseintheconcentrationofTSSandthetwoformsof
organic matter(COD,BOD5) alongthetreatmentline.Theremoval
of TSSwasveryefficientandconsistentwithintheImhofftank
(83±8%).