一种缓解纳滤膜表面无机盐结垢的装置及方法
By synergistically adding sodium chloride and natural organic polymers during the pre-membrane water conditioning stage, the inorganic salt scaling problem of nanofiltration membrane systems is solved by utilizing charge shielding, ion strength regulation, complexation, and steric hindrance effects, thus achieving efficient and stable operation and low-cost operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN UNIV
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
Nanofiltration membrane systems face serious inorganic salt scaling problems during long-term operation, leading to membrane flux decline, increased operating pressure, membrane material damage, and increased operation and maintenance costs. Existing technologies cannot simultaneously achieve efficient scale inhibition, economical operation, and ease of operation.
In the pre-membrane water quality conditioning stage, sodium chloride and natural organic polymers are added simultaneously and precisely. Through the synergistic effect of charge shielding, ion strength regulation, complexation and steric hindrance, the tendency of inorganic salts to deposit and scale on the nanofiltration membrane surface is reduced. A modular device is used to realize online water quality monitoring and control.
It significantly reduces the risk of membrane fouling and scaling, improves the long-term operational stability of nanofiltration membranes, ensures the safety of effluent water quality, reduces operation and maintenance costs, and adapts to dynamic responses under complex water quality conditions.
Smart Images
Figure CN122102304B_ABST