Wastewater treatment device for rare earth waste recovery

By working in synergy with the dynamic activation component, adsorption component, and stirring component, the problems of suspended solids dispersion and uneven reagent mixing in rare earth wastewater are solved, achieving efficient rare earth wastewater treatment and valuable metal recovery, and reducing operation and maintenance costs.

CN122355429APending Publication Date: 2026-07-10LONGNAN COUNTY YINHE NONFERROUS METALS CO LTD
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Patent Information

Application Number
CN202610803983.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-05
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The wastewater generated during the rare earth waste recycling process contains a large amount of iron sludge, rare earth oxide fine slag and magnetic metal particles. The suspended solids content is high and the composition is complex. Existing equipment has problems such as local aggregation of heavy particles, dead zones in stirring and uneven mixing of reagents, resulting in low treatment efficiency and high cost.

Method used

The system employs the synergistic operation of dynamic activation components, adsorption components, and stirring components. Suspended particles are dispersed through a dynamic turbulent flow field. The combination of electromagnetic plates and magnetic guide plates achieves the separation of magnetic metal particles and the elimination of stirring dead zones. Combined with the smooth water distribution of the flow guiding components, it ensures uniform mixing of the reagent and solid-liquid separation.

Benefits of technology

It significantly improves the treatment efficiency of rare earth wastewater and the recovery rate of valuable metals, reduces operation and maintenance costs, and ensures the stability of treated effluent and the utilization rate of reagents.

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Abstract

This invention discloses a wastewater treatment device for rare earth waste recycling, specifically relating to the field of wastewater treatment technology. It includes a treatment tank with an inlet at its upper end. A dynamic activation component is located at the upper part of the tank's interior, with an adsorption component below it and a stirring component below that component. This invention uses the dynamic activation component to dynamically regulate the flow of pretreated influent, ensuring uniform dispersion of various suspended particles. Subsequently, through the coordinated operation of the components, it achieves the separation and enrichment of magnetic and magnetizable valuable metal particles in the wastewater, while maintaining the long-term stable operation of the adsorption surface to prevent hardening and failure of the adsorption layer. It also achieves uniform stirring without dead zones, significantly improving the mixing and reaction efficiency of wastewater and treatment agents, reducing agent waste, and significantly improving the treatment efficiency and valuable metal recovery rate of rare earth wastewater, while lowering operation and maintenance costs.
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