US 12,319,598 B2
Flow electrode capacitive deionization system and method for recovering phosphorus in phosphogypsum leachate and synchronous performing brine desalination
Sha Liang, Hubei (CN); Fan Yang, Hubei (CN); Jiakuan Yang, Hubei (CN); Xiao Guo, Hubei (CN); Shuai Chen, Hubei (CN); Shushan Yuan, Hubei (CN); Wenbo Yu, Hubei (CN); Jingping Hu, Hubei (CN); Huijie Hou, Hubei (CN); Liang Huang, Hubei (CN); and Huabo Duan, Hubei (CN)
Assigned to HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
Appl. No. 18/558,732
Filed by HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
PCT Filed Dec. 21, 2022, PCT No. PCT/CN2022/140578
§ 371(c)(1), (2) Date Nov. 2, 2023,
PCT Pub. No. WO2024/103483, PCT Pub. Date May 23, 2024.
Claims priority of application No. 202211446254.7 (CN), filed on Nov. 18, 2022.
Prior Publication US 2025/0100911 A1, Mar. 27, 2025
Int. Cl. C02F 1/469 (2023.01); B01D 61/42 (2006.01); C02F 101/10 (2006.01); C25B 9/40 (2021.01)
CPC C02F 1/4691 (2013.01) [B01D 61/4281 (2022.08); C02F 2101/105 (2013.01); C02F 2201/46 (2013.01); C02F 2201/4618 (2013.01); C25B 9/43 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A flow electrode capacitive deionization system for recovering phosphorus in phosphogypsum leachate and synchronously performing brine desalination, wherein the flow electrode capacitive deionization system comprises a phosphorus recovery electrodeionization module and a desalination electrodeionization module,
the phosphorus recovery electrodeionization module comprises a phosphorus recovery electrodeionization module anode flow electrode chamber (3), a phosphorus recovery electrodeionization module cathode flow electrode chamber (7), and a phosphorus recovery electrodeionization module deionization chamber (5), a first anion exchange membrane (4) is provided between the phosphorus recovery electrodeionization module anode flow electrode chamber (3) and the phosphorus recovery electrodeionization module deionization chamber (5), and a first cation exchange membrane (6) is provided between the phosphorus recovery electrodeionization module cathode flow electrode chamber (7) and the phosphorus recovery electrodeionization module deionization chamber (5),
the desalination electrodeionization module comprises a desalination electrodeionization module anode flow electrode chamber (15), a desalination electrodeionization module cathode flow electrode chamber (11), and a desalination electrodeionization module deionization chamber (13), a second cation exchange membrane (12) is provided between the desalination electrodeionization module cathode flow electrode chamber (11) and the desalination electrodeionization module deionization chamber (13), and a second anion exchange membrane (14) is provided between the
desalination electrodeionization module anode flow electrode chamber (15) and the desalination electrodeionization module deionization chamber (13), the flow electrode capacitive deionization system further comprises a phosphogypsum leachate reservoir (1), a brine reservoir (8), a first flow electrode solution reservoir (9), and a second flow electrode solution reservoir (10),
a liquid outlet of the phosphogypsum leachate reservoir (1) communicates with a liquid inlet of the phosphorus recovery electrodeionization module deionization chamber (5), a liquid outlet of the phosphorus recovery electrodeionization module deionization chamber (5) communicates with a liquid inlet of the phosphogypsum leachate reservoir (1), and a liquid outlet of the brine reservoir (8) communicates with a liquid inlet of the desalination electrodeionization module deionization chamber (13),
a liquid outlet of the first flow electrode solution reservoir (9) communicates with a liquid inlet of the phosphorus recovery electrodeionization module anode flow electrode chamber (3), a liquid outlet of the phosphorus recovery electrodeionization module anode flow electrode chamber (3) communicates with a liquid inlet of the desalination electrodeionization module cathode flow electrode chamber (11), and a liquid outlet of the desalination electrodeionization module cathode flow electrode chamber (11) communicates with a liquid inlet of the first flow electrode solution reservoir (9),
a liquid outlet of the second flow electrode solution reservoir (10) communicates with a liquid inlet of the phosphorus recovery electrodeionization module cathode flow electrode chamber (7), a liquid outlet of the phosphorus recovery electrodeionization module cathode flow electrode chamber (7) communicates with a liquid inlet of the desalination electrodeionization module anode flow electrode chamber (15), and a liquid
outlet of the desalination electrodeionization module anode flow electrode chamber (15) communicates with a liquid inlet of the second flow electrode solution reservoir (10), and each of the phosphorus recovery electrodeionization module anode flow electrode chamber (3), the phosphorus recovery electrodeionization module cathode flow electrode chamber (7), the desalination electrodeionization module anode flow electrode chamber (15), and the desalination electrodeionization module cathode flow electrode chamber (11) comprises a current collector plate (2) having a flow electrode solution flowing channel.