Patent ID: 6485647
Filing Date: 2002-11-26
Classification: C02F,E03F

Abstract:
A method of subsurface sewage treatment which comprises:(a) flowing sewage from a source in a sewer line to a primary sewage processing unit, wherein the primary unit generates wastewater; (b) flowing wastewater from said primary unit through the interior of a first conduit of a leach field comprised of conduits within soil; (c) flowing wastewater from the interior of the first conduit into an influence zone in the soil adjacent the first conduit; (d) providing a gas comprised of air or other active gas; (e) applying an air or other active gas pressure differential between the first conduit interior and the influence zone, to thereby cause said air or other active gas to flow serially through the first conduit and the influence zone; wherein, the quantity of said air or other active gas which is flowed through said influence zone and said conduit interior is an effective amount with respect to altering the biochemical or physical character of the influence zone and the treatment of wastewater therein.