Method for subsurface aerated treatment of wastewater

Details Method for subsurface aerated treatment of wastewater Method for subsurface aerated treatment of wastewater

2005-05-03

2005-05-03

Barry, Chester T. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S747300, C210S744000

Reexamination Certificate

active

06887383

ABSTRACT:
The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through cesspools, leaching chambers, perforated pipes in stone filled trenches, leach pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a significant pressure differential with atmosphere and to effect a desired physical or biochemical change in the soil adjacent the conduits. A typical pressure will be around 7-8 cm (about 3 inch) water column. If the soil is saturated, the air pressure will push water from the soil, as well as change the gas composition in the soil. The flow of wastewater may be alternated with the flow of air. Different valve devices and piping configurations are used to manage the desired flow of air and wastewater.

REFERENCES:
patent: 6485647 (2002-11-01), Potts
patent: 6726401 (2004-04-01), Potts
patent: 6814866 (2004-11-01), Potts

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