Patent ID: 6896805
Filing Date: 2005-05-24
Classification: C02F,Y02W

Abstract:
1. A wastewater treatment system comprising: a vertical flow marsh cell adapted to contain a first particulate media and having a top surface, an outlet adjacent a bottom thereof, and means for supporting plants so as to permit roots thereof to extend into the first media, the roots and the first media thereby positioned to contact water flowing into and downward through the marsh cell; a subsurface horizontal wetland adapted to contain a second particulate media and to support vegetative growth upon a top surface thereof so as to permit roots thereof to extend into the second media, the roots and the second media thereby positioned to contact water flowing substantially horizontally and downward through the wetland; means for transporting water to be treated and water exiting the marsh cell outlet to a top surface of the wetland adjacent a first end thereof; means for recycling water from an outlet adjacent a bottom of the wetland adjacent a second end, the second end opposed to the first end, to the marsh cell top surface; and means for discharging treated water from the wetland outlet.