Patent ID: 6830688
Filing Date: 2004-12-14
Classification: C02F,Y02W

Abstract:
A system for advanced treatment of wastewater comprising:an attached growth pretreatment filter at least intermittently exposed to atmospheric oxygen, the filter having an inlet for receiving water to be treated; a first and a second hydroponic reactor, each having an inlet and an outlet; a vertical-flow wetland comprising a basin having an outlet in a bottom thereof, the basin adapted to contain a particulate medium, and a mat adapted for permitting plants to root therein, the mat positioned above the particulate medium, the wetland cell adapted to maintain a population of aquatic invertebrates therein; first means for transferring water from the filter outlet to the first reactor inlet; second means for transferring water from the first reactor outlet to the second reactor inlet; and means for distributing water from the second reactor outlet across at least a portion of the vertical-flow wetland.