Method and device for defluorination by electrocoagulation
By using a metal anode plate doped with rare earth elements in electrocoagulation technology, the synergistic precipitation of rare earth ions and fluoride ions is achieved, solving the problems of high energy consumption and limited floc adsorption capacity in electrocoagulation technology under low concentration conditions, and improving the fluoride ion removal efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GRINM RESOURCES & ENVIRONMENT TECH CO LTD
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-17
AI Technical Summary
Electrocoagulation technology is inefficient in removing fluoride ions, especially under low concentration conditions, requiring high energy consumption and strict pH control. Furthermore, the adsorption capacity of flocs for fluoride ions is limited, making it difficult to adapt to complex water qualities.
Using a metal anode plate doped with rare earth elements, rare earth ions are precipitated in situ during electrocoagulation. Through the synergistic effect of rare earth ions and fluoride ions, rare earth fluoride precipitates are formed, which enhances adsorption selectivity and optimizes the pH range to reduce energy consumption.
It improves the removal efficiency and stability of fluoride ions, reduces energy consumption and electrode wear, expands the application potential of electrocoagulation technology in complex water quality, and achieves deep removal of low-concentration fluoride ions.
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Figure CN122403587A_ABST