US 11,787,713 B1
Low cost technology municipal wastewater treatment for safe irrigation reuse
Hany Amin Elsawy, Al-Ahsa (SA); Azza Mahmoud Sedky, Al-Ahsa (SA); and Esawy Mahmoud, Al-Ahsa (SA)
Assigned to KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed by KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed on May 25, 2023, as Appl. No. 18/202,094.
Int. Cl. C02F 1/52 (2023.01); B01J 20/20 (2006.01); B01J 20/28 (2006.01); C02F 3/10 (2023.01); C02F 101/20 (2006.01); C02F 101/30 (2006.01); C02F 103/30 (2006.01)
CPC C02F 1/5236 (2013.01) [B01J 20/20 (2013.01); B01J 20/28011 (2013.01); C02F 1/5281 (2013.01); C02F 3/106 (2013.01); C02F 3/108 (2013.01); C02F 2101/20 (2013.01); C02F 2101/306 (2013.01); C02F 2101/308 (2013.01); C02F 2103/30 (2013.01); C02F 2303/04 (2013.01); C02F 2303/18 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for decontaminating wastewater, the system comprising:
a feed pump configured to introduce wastewater containing contaminants to be treated by decontamination;
a first tank having a first mixing mechanism, said first tank configured to receive and contain the wastewater from the feed pump;
a dosing system configured for introducing treatment chemicals into the first tank containing the wastewater, wherein the mixing mechanism is configured to mix the treatment chemicals with the wastewater at a first, rapid mixture speed to obtain a mixture;
a second tank having a second mixing mechanism and configured to receive, contain, and mix the mixture from the first tank at a second, lower mixture speed to flocculate, coagulate, and remove at least a portion of the contaminants from the mixture, thereby obtaining a treated wastewater;
an exit pump connected to the second tank configured to irrigate or distribute the decontaminated water to a desired location; and
a biofilter for biofiltering the treated wastewater to remove any remaining contaminants and the treatment chemicals to produce decontaminated water.