US 11,850,554 B2
Wastewater treatment with primary treatment and MBR or MABR-IFAS reactor
Pierre Lucien Cote, Ancaster (CA); Steven Kristian Pedersen, Burlington (CA); Wajahat Hussain Syed, Burlington (CA); Jeffrey Gerard Peeters, Oakville (CA); Nicholas William H. Adams, Oakville (CA); Youngseck Hong, Oakville (CA); Geert-Henk Koops, Oakville (CA); and James John Royston, Burlington (CA)
Assigned to BL TECHNOLOGIES, INC., Minnetonka, MN (US)
Filed by BL Technologies, Inc., Minnetonka, MN (US)
Filed on Nov. 2, 2018, as Appl. No. 16/178,974.
Application 16/178,974 is a division of application No. 15/126,886, granted, now 10,160,679, previously published as PCT/US2015/019943, filed on Mar. 11, 2015.
Application 15/126,886 is a continuation in part of application No. PCT/US2014/031321, filed on Mar. 20, 2014.
Claims priority of provisional application 62/082,398, filed on Nov. 20, 2014.
Claims priority of provisional application 61/968,752, filed on Mar. 21, 2014.
Prior Publication US 2019/0135667 A1, May 9, 2019
Int. Cl. B01D 61/18 (2006.01); C02F 3/20 (2023.01); C02F 11/123 (2019.01); C02F 1/00 (2023.01); C02F 3/12 (2023.01); B01D 61/22 (2006.01); C02F 101/16 (2006.01)
CPC B01D 61/18 (2013.01) [B01D 61/22 (2013.01); C02F 1/004 (2013.01); C02F 3/1268 (2013.01); C02F 3/1273 (2013.01); C02F 3/201 (2013.01); C02F 11/123 (2013.01); B01D 2313/26 (2013.01); B01D 2315/06 (2013.01); B01D 2315/20 (2013.01); C02F 2101/16 (2013.01); C02F 2203/006 (2013.01); C02F 2303/20 (2013.01); C02F 2303/24 (2013.01); Y02W 10/10 (2015.05)] 18 Claims
OG exemplary drawing
 
1. A process for treating water comprising the steps of,
a) providing primary treatment of the water by way of a micro-sieve to produce a primary effluent stream and primary sludge stream;
b) providing secondary treatment of the primary effluent comprising treatment with a membrane aerated biofilm and a suspended biomass, to produce a secondary effluent stream and activated sludge stream; and,
c) recycling a portion of the activated sludge stream to the micro-sieve wherein the portion of the activated sludge stream comprises activated sludge.