Patent ID: 7128839
Filing Date: 2006-10-31
Classification: C02F,Y02W,Y10S

Abstract:
1. A wastewater treatment system comprising: A) a constructed wetland comprising a reservoir defining a flow channel for the wastewater, the wastewater at least partially filling the reservoir, an inlet end where wastewater to be treated is introduced into the reservoir and an outlet end where water is discharged from the reservoir, wherein the water flows from the inlet end toward the outlet end; B) a recirculating sand filter having at least one inlet and at least one outlet, wherein an inlet of the recirculating sand filter is in fluid communication with the outlet end of the reservoir; C) a first recycle system providing fluid communication from the outlet of the recirculating sand filter to the inlet end of the wetlands reservoir; and, D) means to move water through the first recycle system from the outlet of the recirculating sand filter to the inlet end of the wetlands reservoir.