US 12,146,302 B2
Residential grey water recycling system
Christopher Roy Thompson, Barrie (CA); Michael Nelson Pereira Caldeira, Toronto (CA); and Babak Lakghomi, Toronto (CA)
Assigned to Greyter Water Systems Inc., Toronto (CA)
Appl. No. 16/078,246
Filed by Greyter Water Systems Inc., Toronto (CA)
PCT Filed Mar. 2, 2017, PCT No. PCT/CA2017/050282
§ 371(c)(1), (2) Date Aug. 21, 2018,
PCT Pub. No. WO2017/147710, PCT Pub. Date Aug. 9, 2017.
Claims priority of provisional application 62/302,988, filed on Mar. 3, 2016.
Claims priority of provisional application 62/305,625, filed on Mar. 9, 2016.
Prior Publication US 2019/0047878 A1, Feb. 14, 2019
Int. Cl. E03B 1/04 (2006.01); B01D 29/66 (2006.01); B01D 35/143 (2006.01); B01D 35/147 (2006.01); C02F 1/00 (2023.01); C02F 1/28 (2023.01); C02F 1/44 (2023.01); C02F 1/68 (2023.01); C02F 1/76 (2023.01); C02F 103/00 (2006.01); E03C 1/26 (2006.01); E03D 5/00 (2006.01)
CPC E03B 1/042 (2013.01) [B01D 29/668 (2013.01); B01D 35/143 (2013.01); B01D 35/147 (2013.01); C02F 1/001 (2013.01); C02F 1/008 (2013.01); C02F 1/283 (2013.01); C02F 1/44 (2013.01); C02F 1/686 (2013.01); C02F 1/76 (2013.01); E03B 1/041 (2013.01); E03D 5/003 (2013.01); C02F 2103/002 (2013.01); C02F 2209/03 (2013.01); C02F 2209/40 (2013.01); C02F 2209/42 (2013.01); C02F 2303/16 (2013.01); E03B 2001/045 (2013.01); E03C 1/26 (2013.01); Y02A 20/148 (2018.01); Y02A 20/30 (2018.01)] 10 Claims
OG exemplary drawing
 
1. A grey water treatment system comprising,
a collection tank;
a membrane unit in communication with the collection tank;
an activated carbon adsorption unit in communication with a permeate side of the membrane unit;
a permeate tank downstream of the activated carbon adsorption unit;
a grey water inlet in communication with the collection tank and adapted to be connected to a grey water drain of a single family residence; and,
a pre-filter unit upstream of the collection tank wherein the pre-filter unit comprises a filter screen, a bypass tank above the filter screen, the bypass tank having a lower end and an upper end, for retaining a volume of grey water above the filter screen to allow for more time for the grey water to pass through the filter screen, and an overflow extending from the upper end of the bypass tank to a waste outlet of the single family residence;
the filter screen in communication with and positioned below the lower end of the bypass tank; and the grey water inlet in communication with the filter screen and the lower end of the bypass tank and positioned therebetween;
a chlorination system configured to add chlorine to the collection tank and/or the permeate tank, and
a proximity sensor proximate the overflow for indicating that influent grey water is near the upper end of the bypass tank;
wherein the total volume of the collection tank and the permeate tank is 500 L or less.