US 9,809,481 B2
Treatment of waste products with anaerobic digestion
Juan Carlos Josse, Mission Viejo, CA (US)
Assigned to Anaergia Inc., Burlington (CA)
Filed by ANAERGIA INC., Burlington (CA)
Filed on Jan. 25, 2016, as Appl. No. 15/5,469.
Claims priority of provisional application 62/108,145, filed on Jan. 27, 2015.
Claims priority of provisional application 62/265,691, filed on Dec. 10, 2015.
Prior Publication US 2016/0214879 A1, Jul. 28, 2016
Int. Cl. C02F 11/12 (2006.01); C02F 11/04 (2006.01); C02F 3/28 (2006.01); C02F 101/16 (2006.01); C02F 1/56 (2006.01); C02F 103/20 (2006.01); C02F 103/22 (2006.01); C02F 103/32 (2006.01)
CPC C02F 11/12 (2013.01) [C02F 11/04 (2013.01); C02F 1/56 (2013.01); C02F 3/28 (2013.01); C02F 11/125 (2013.01); C02F 11/126 (2013.01); C02F 2101/16 (2013.01); C02F 2103/20 (2013.01); C02F 2103/22 (2013.01); C02F 2103/32 (2013.01); C02F 2209/10 (2013.01); C02F 2303/24 (2013.01); C02F 2305/06 (2013.01); Y02W 10/23 (2015.05)] 10 Claims
OG exemplary drawing
 
1. A process for treating WWTP sludge comprising the steps of,
feeding the WWTP sludge at 12-20% TS to an anaerobic digester;
operating the anaerobic digester at 6-12% TS without recuperative thickening; and,
dewatering digestate in two stages.