Flow electrode capacitive deionization system and method for recovering phosphorus in phosphogypsum leachate and synchronous performing brine desalination
US12319598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Dec 21, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flow electrode capacitive deionization system and a method for recovering phosphorus in phosphogypsum leachate and synchronous performing brine desalination belong to the technical field of wastewater treatment and recycling. The flow electrode capacitive deionization system includes a phosphorus recovery electrodeionization module and a desalination electrodeionization module. A first flow electrode solution reservoir, a phosphorus recovery electrodeionization module cathode flow electrode chamber, and a desalination electrodeionization module anode flow electrode chamber are interconnected in a circulation. A second flow electrode solution reservoir, a phosphorus recovery electrodeionization module anode flow electrode chamber, and a desalination electrodeionization module cathode flow electrode chamber are interconnected in a circulation. Two independent flow electrode solution circulation loops are formed. The phosphogypsum leachate enters the phosphorus recovery electrodeionization module and phosphorus is enriched into a flow electrode solution. A phosphorus-rich solution is reacted with a ferrous solution under an oxygen-free condition to generate vivianite [Fe3(PO4)2·8H2O…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.