Patent ID: 7214317
Filing Date: 2007-05-08
Classification: C02F,Y02W,Y10S

Abstract:
1. A wastewater treatment system comprising: a first, a second, and a third vertical flow marsh cell, each having an outlet adjacent a bottom thereof, each marsh cell adapted to contain particulate media and plants having roots extendible into the media, so that the roots and the media are positioned to contact water flowing into each marsh cell; means for transporting water to be treated to a surface of the first and the second marsh cell, from the first marsh cell outlet to the second marsh cell surface, from the second marsh cell outlet to a surface of the third marsh cell, from the third marsh cell outlet to the first marsh cell surface for process recycling, and from the third marsh cell outlet to a discharge outlet, the water transporting means further comprising means for substantially emptying each marsh cell on a predetermined cycle for a predetermined time, for permitting aeration of contents of each marsh cell.