US 12,264,091 B1
Wastewater treatment system
Pio S. Lombardo, Newton, MA (US)
Assigned to HOLM ENVIRONMENTAL ENERGY RESOURCES LLC, Cannonville, UT (US)
Filed by HOLM ENVIRONMENTAL ENERGY RESOURCES LLC, Cannonville, UT (US)
Filed on Apr. 28, 2022, as Appl. No. 17/732,215.
Claims priority of provisional application 63/300,309, filed on Jan. 18, 2022.
Int. Cl. C02F 3/28 (2023.01); C02F 1/66 (2023.01); C02F 101/16 (2006.01); C02F 103/00 (2006.01)
CPC C02F 3/2826 (2013.01) [C02F 1/66 (2013.01); C02F 3/286 (2013.01); C02F 3/288 (2013.01); C02F 2101/16 (2013.01); C02F 2103/002 (2013.01); C02F 2301/046 (2013.01); C02F 2301/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A water treatment system for consistently achieving less than 2.5 mg/L of total nitrogen from a total wastewater starting influent having at least about 30 mg/L of total nitrogen, the system comprising:
a septic tank;
an anaerobic upflow filter (AUF) receiving wastewater from the septic tank;
a recirculating media filter (RMF) receiving wastewater from the AUF;
a denitrification filter receiving wastewater from the RMF and comprising a lined excavation, a wood-based media mixture, inlet and outlet manifolds, and wherein the denitrification filter is divided into a plurality of dosing sections that are dosed in sequence;
a heated alkalinity feed system positioned for feeding an alkalinity adjustment solution for increasing alkalinity into the wastewater before entrance of the wastewater into the RMF; and
a drain field disposal downstream from the denitrification filter.