artificial wetland and use thereof for the liquid effluent phytopurification

artificial wetland (6) the type of non-continuous subsurface horizontal flow and batch job characterized in that consists of a body of trapezoidal section inverted with sloping sides oriented towards an interior and housing a plurality of macrophytes supported on a sand surface resting on a layer of gravel at the bottom, all such that each batch of liquid effluent subsurface floods the gravel bed of the wetland body without flooding the sand surface initially passing over a gabion roughing (7), and producing output to a purified effluent collection pit (9) by gravity through a drainage tube placed at the final output end beneath the surface of the wetland.