US 12,473,220 B2
Systems and methods for treating a wastewater stream
Ahmet Erkan Uman, Tampa, FL (US); Daniel H. Yeh, Tampa, FL (US); and Robert Alonso Bair, Tampa, FL (US)
Assigned to UNIVERSITY OF SOUTH FLORIDA, Tampa, FL (US)
Appl. No. 18/002,837
Filed by UNIVERSITY OF SOUTH FLORIDA, Tampa, FL (US)
PCT Filed Jun. 25, 2021, PCT No. PCT/US2021/039226
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2021/263191, PCT Pub. Date Dec. 30, 2021.
Claims priority of provisional application 62/705,416, filed on Jun. 25, 2020.
Prior Publication US 2023/0242429 A1, Aug. 3, 2023
Int. Cl. C02F 1/44 (2023.01); B01D 21/00 (2006.01); B01D 61/14 (2006.01); C02F 1/46 (2023.01); C02F 1/463 (2023.01); C02F 1/52 (2023.01); C02F 3/28 (2023.01); C02F 3/32 (2023.01); C02F 9/00 (2023.01); C02F 1/00 (2023.01)
CPC C02F 9/00 (2013.01) [B01D 21/0042 (2013.01); B01D 61/149 (2022.08); C02F 1/444 (2013.01); C02F 1/463 (2013.01); C02F 1/5227 (2013.01); C02F 3/2846 (2013.01); C02F 3/2853 (2013.01); C02F 3/322 (2013.01); C02F 2001/007 (2013.01); C02F 2203/002 (2013.01); C02F 2209/40 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wastewater treatment system comprising:
a settling tank including: an inlet configured to receive an inlet wastewater stream;
a plurality of baffles or tubes disposed in an interior space of the settling tank;
a solids outlet disposed near a bottom end of the settling tank; and
a supernatant outlet disposed above the solids outlet;
a membrane feed tank including:
an inlet configured to receive all or a portion of supernatant liquid from the settling tank supernatant outlet;
a solids outlet disposed near a bottom end of the membrane feed tank; and
a fluid outlet disposed above the solids outlet;
wherein the supernatant liquid passes through the fluid outlet; and,
a first filtration unit including: a filtration inlet configured to receive all or a portion of supernatant liquid from the membrane feed tank; and,
porous filtration media disposed to separate the filtration unit into a permeate side that allows permeate to exit the filtration unit through a permeate outlet and a retentate side that allows retentate to exit the filtration unit through a retentate outlet; and
wherein the wastewater treatment system further comprises a configuration wherein the membrane feed tank further includes a second fluid inlet configured and fluidly connected to receive all or a portion of the retentate from the filtration unit retentate outlet.