US 12,167,721 B2
Water treatment system for a recirculation aquaculture facility
Tapio Kiuru, Laukaa (FI); and Jouni Vielma, Jyväskylä (FI)
Assigned to LUONNONVARAKESKUS, Helsinki (FI)
Appl. No. 17/266,472
Filed by LUONNONVARAKESKUS, Helsinki (FI)
PCT Filed Aug. 5, 2019, PCT No. PCT/EP2019/070988
§ 371(c)(1), (2) Date Feb. 5, 2021,
PCT Pub. No. WO2020/030574, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 20185673 (FI), filed on Aug. 6, 2018.
Prior Publication US 2021/0298275 A1, Sep. 30, 2021
Int. Cl. A01K 63/04 (2006.01); A01K 61/00 (2017.01); A01K 61/10 (2017.01); C02F 3/30 (2023.01)
CPC A01K 63/045 (2013.01) [A01K 61/10 (2017.01); C02F 3/302 (2013.01); A01K 61/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A water treatment system for a recirculation aquaculture facility, wherein said system comprises:
a pre-treatment facility comprising at least one wetland refinery cell,
a groundwater recharge arrangement, located downstream of the pre-treatment facility, and
an additional pre-treatment facility configured as an at least one denitrification bioreactor comprising denitrifying filter medium,
wherein said water treatment system forms a primary recirculation flow pathway when integrated with the recirculation aquaculture facility, thereupon effluent discharged from the recirculation aquaculture facility is sequentially directed through the at least one denitrification bioreactor, the pre-treatment facility and the groundwater recharge arrangement back into the recirculation aquaculture facility via a water collecting circuit network to enter the recirculation aquaculture facility as an influent, and
wherein the water collecting circuit network is configured as and acts as a heat exchanger.