中空纤维膜材料、亲水改性中空纤维膜束制备方法和亲水改性中空纤维膜束

By using hydrophilic modified hollow fiber membrane bundles prepared with polytetramethylpentene and modifiers, the problems of oxygen transport and microbial adhesion caused by hydrophobic materials were solved, achieving efficient oxygen transport and microbial adhesion, and improving the pollutant treatment capacity of MABR membranes.

CN122399588APending Publication Date: 2026-07-17
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-06-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing MABR membranes are made of hydrophobic polymer materials, which affect oxygen transport and microbial attachment, reducing the membrane's oxygen transfer performance and pollutant treatment capacity.

Method used

Modified fiber membranes were prepared using polytetramethylpentene as the main material, combined with inorganic powders, liquid additives, and toughening modifiers. Hydrophilic modified hollow fiber membrane bundles were formed by hydrophilic coating and entanglement of the fibers, which improved oxygen transfer and microbial adhesion.

Benefits of technology

It improves oxygen transfer efficiency, promotes rapid microbial adhesion, enhances membrane stability and hydrophilicity, reduces the impact of condensate and wastewater wetting, and improves pollutant treatment capacity.

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Abstract

本发明提供了一种中空纤维膜材料、亲水改性中空纤维膜束制备方法和亲水改性中空纤维膜束，中空纤维膜材料包括按照质量百分比计的如下原料：聚四甲基戊烯40%~50%、无机粉体15%~30%、液体添加剂10%~38.5%、增韧改性剂3%~8%、成核剂0.5%~2%。本发明中，聚四甲基戊烯具有较高氧气渗透系数、较强的疏水性；无机粉体和液体添加剂用于改性纤维膜丝的造孔，通过洗脱后形成的孔提高单位面积传氧速率，且促进微生物快速粘附；增韧改性剂抑制聚四甲基戊烯过度结晶，有利于氧气传递；成核剂细化聚四甲基戊烯晶粒，提高气体渗透通量；用该中空纤维膜材料制成的亲水改性中空纤维膜束，不易被内部供气端的冷凝水及外部污水润湿，稳定进行氧气输送，促进微生物快速粘附并长期稳定发挥作用。
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