Back to results
US 6,485,647 B1Granted
Method and apparatus for treating leach fields
OwnerDavid A. Pottsinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerDavid A. Pottsinventor
Estimating the term…
The functioning of the leach field of a septic tank type sewage system is maintained or rejuvenated by flowing air or other active gas through the system's conduits, for instance, leaching chambers or perforated pipes in stone filled trenches. Differential pressure created by an air mover forces air or other active gas to flow through the soil adjacent the conduits, to an extent sufficient to push water from any saturated soil and effect desirable aerobic biochemical conditions in the soil. In alternate embodiments, conduits may be pressurized or evacuated. Valves and other plumbing are provided to control air flow and enable continued function of the sewage system during air flow treatment. Auxiliary piping, buried adjacent the trenches of the leach field, is pressurized or evacuated to cause air flow through the soil and or the conduits of the leach field.
A method of subsurface sewage treatment which comprises:
The method of claim 17, further comprising:
A method of subsurface sewage treatment, wherein waste water is flowed from the openings of a conduit into an influence zone within soil, in which zone the biochemistry of the waste-water is made substantially environmentally benign by biochemical activity, and wherein said waste water is then flowed within the soil away from the influence zone, which comprises flowing a biochemically or physically effective amount of gas comprised of air or other active gas through the influence zone, wherein the gas flows to or from the interior of said conduit by passing through one or more openings in the conduit.
Dependencies are inferred from the claim text.