Air-mediated anti-fouling waste heat driven zero-emission crystallization system
By employing an air-mediated humidification and dehumidification mechanism and a multi-stage humidification architecture, the problems of heat transfer deterioration and salt precipitation scaling in zero liquid discharge of high-salt wastewater are solved. This enables low-energy resource recovery and zero discharge of salt, adapts to low-grade heat sources, and reduces operation and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL
- Filing Date
- 2026-05-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing zero-liquid-discharge technologies for high-salinity wastewater face problems such as heat transfer deterioration, salt precipitation and scaling, and membrane fouling during the final high-concentration and crystallization solidification stages, resulting in high energy consumption and high operation and maintenance costs, making it difficult to achieve low-cost and efficient salt resource recovery.
It adopts an air-mediated humidification and dehumidification mechanism, which avoids salt precipitation and scaling by evaporating water at the gas-liquid interface, and uses a low-grade heat source to drive a multi-stage humidification and dehumidification process. Combined with closed and open air circulation, it achieves efficient crystallization of concentrated brine and resource utilization of salt.
It achieves low energy consumption, anti-scaling zero liquid discharge, reduces system operating costs, realizes resource recovery of salt, and is compatible with inexpensive heat sources such as industrial waste heat and solar energy, overcoming the bottlenecks of traditional methods.
Smart Images
Figure CN122403550A_ABST