US 12,281,033 B2
Method and device to clean a treatment water containing a veterinary product for aquatic animals
Bruno Heiniger, Boll (CH); Stefan Amann, Rielasingen (DE); and Laurent De Franceschi, Cernay (FR)
Assigned to SUEZ Groupe, Paris la Défense (FR)
Appl. No. 17/616,177
Filed by SUEZ Groupe, Paris la Défense (FR)
PCT Filed Jun. 3, 2020, PCT No. PCT/EP2020/065283
§ 371(c)(1), (2) Date Dec. 2, 2021,
PCT Pub. No. WO2020/245152, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 19305712 (EP), filed on Jun. 3, 2019.
Prior Publication US 2022/0242761 A1, Aug. 4, 2022
Int. Cl. C02F 1/78 (2023.01); C02F 1/66 (2023.01); C02F 1/70 (2023.01); C02F 1/72 (2023.01)
CPC C02F 1/78 (2013.01) [C02F 1/66 (2013.01); C02F 1/70 (2013.01); C02F 1/722 (2013.01); C02F 1/725 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method to clean a treatment water containing brackish or sea water and further containing a veterinary product for aquatic animals, the method comprising:
moving the treatment water, via a circuit pump from a treatment aquatic area in which the aquatic animals are treated, toward a reaction vessel,
performing a first degradation of a portion of the veterinary product from the treatment water in the reaction vessel by an advanced oxidation process comprising introducing ozone and a basic substance into the treatment water together, to obtain a reacting treatment water,
performing a second degradation of a remaining portion of the veterinary product in the reacting treatment water after the first degradation by:
moving the reacting treatment water, via the circuit pump, from the reaction vessel to a retention vessel, and
retaining the reacting treatment water in the retention vessel for a predetermined period of time and without introducing ozone based on at least one of a concentration of ozone in the treatment water and a type of the veterinary product, and
reducing a remaining oxidant species of the reacting treatment water, after the second degradation, in order to obtain a clean treatment water.