Wastewater treatment system and method

Details Wastewater treatment system and method Wastewater treatment system and method

1990-12-28

1992-10-20

Hart, Charles

Liquid purification or separation

Processes

Treatment by living organism

210 17, 210807, C02F 332

Patent

active

051567415

ABSTRACT:
A biological treatment system and method is provided for treating wastewater from a treatment plant which provides primary and secondary treatment. An aggregate-filled bed enclosed by a water-impervious barrier is used to receive and cleanse the wastewater using the roots of turf grass grown on the top of the bed. Wastewater is introduced near the bottom of the bed and flows generally upwardly through the voids in the media, passing through the root system of the turf grass. Wastewater is withdrawn from the bed at a higher level than it is introduced. The top surface of the bed remains dry and is capable of supporting pedestrian and vehicular traffic. A recirculation system maintains the generally upward flow of water through the bed. Transpiration reduces the volume of the wastewater and the biological cleansing action of the roots cleanses the wastewater. Alternative forms of the bed are described.

REFERENCES:
patent: 3770623 (1973-11-01), Seidel
patent: 3919848 (1975-11-01), Sullivan
patent: 3995436 (1976-12-01), Diggs
patent: 4169050 (1979-09-01), Serfling et al.
patent: 4678582 (1987-07-01), Lavigne
patent: 4749479 (1988-06-01), Gray
patent: 4824572 (1989-04-01), Scott
patent: 4839051 (1989-06-01), Higa
patent: 4959084 (1990-09-01), Wolverton et al.
NaturTurf Sales Brochure, copyright 1979.

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