一种用于改性磷石膏路基的梯级单元式排水沟槽净化系统
The tiered unit-type drainage ditch purification system utilizes a multi-layer structure and natural materials to treat phosphogypsum leachate, solving the environmental pollution problem of phosphogypsum leachate treatment in the field of highways. It achieves efficient defluorination and phosphorus removal as well as rainwater purification, while reducing costs and complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA ACAD OF TRANSPORTATION SCI
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for the efficient treatment of phosphogypsum leachate in the field near highways, especially when the roadbed protection structure is damaged, which poses a risk of environmental pollution. Furthermore, the treatment process is complex and costly.
A tiered unit-type drainage ditch purification system is designed, which utilizes natural and waste materials to construct rainwater collection troughs, fluoride removal troughs, and phosphorus removal troughs. The system achieves efficient defluorination and phosphorus removal of phosphogypsum leachate through a multi-layer structure, including aggregate layers, purification layers, activated carbon layers, and composite layers, as well as limestone layers, steel slag layers, and sand layers. The purification is achieved by combining physical adsorption and chemical reaction.
It achieves efficient purification of phosphogypsum leachate under accident or rainfall conditions, reduces the risk of environmental pollution, simplifies the treatment process, reduces costs, and also has the function of purifying rainwater runoff, ensuring the safety of surrounding water quality.
Smart Images
Figure CN121609457B_ABST