An experimentalhybridconstructedwetlandsystemconsistingof3stagesofdifferentwetlandconfig-
urations (i.e.twoverticalflowbeds(1.5m2 each) alternatingfeed-restcyclesfollowedbyahorizontal
subsurface flow(2m2) andafreewatersurface(2m2) wetlandsinseries)andthequalityofitsfinal
effluent wereevaluatedforaboutoneyear