US 6,982,033 B2
Aerobic treatment plant with filter pipe
Hubbard H. Donald, 2247 Hwy. 151 N., Downsville, La. 71234 (US); and George E. Johnson, 2247 Hwy. 151 N., Downsville, La. 71234 (US)
Filed on Jul. 12, 2002, as Appl. No. 10/195,109.
Claims priority of provisional application 60/305170, filed on Jul. 13, 2001.
Prior Publication US 2003/0029783 A1, Feb. 13, 2003
Int. Cl. C02F 3/00 (2006.01)
U.S. Cl. 210—207 24 Claims
OG exemplary drawing
 
1. A device comprising:
a cylindrical aerobic tank and a post-treatment tank;
wherein said aerobic tank and said post-treatment tank are rigidly joined into a single unit and are connected in series so that sewage flows from said aerobic tank to said post-treatment tank;
wherein said aerobic tank further comprises a clarifier that divides said aerobic tank into an inner chamber and an outer chamber, one or more air droplines located within said outer chamber of said aerobic tank, and an outlet drain located within said inner chamber of said aerobic tank,
wherein said post-treatment tank further comprises a chlorinator and a filter pipe,
wherein said clarifier further comprises:
a funnel-shaped main body with top and bottom openings,
a lip around the top of said main body by which said clarifier overhangs the top of said aerobic tank, and
an offset wherein said clarifier main body is held slightly below the level of said lip and whereby the top of said main body of said clarifier is slightly below the top of said aerobic tank; and
wherein said one or more air droplines emit air bubbles in said outer chamber of said aerobic tank at or above the level of the plane of the bottom of said clarifier.