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MBR膜一般是什么材质?

2022-02-28

高分子有机膜材料:聚丙烯腈、聚砜类、含氟聚合物等。  

有机膜,造价便宜,膜的制造工艺较为成熟,膜孔径和形式也较为多样,但运行过程易污染、强度低、使用寿命短。  

无机膜:是由无机材料,如金属、金属氧化物、陶瓷、多孔玻璃、沸石、无机高分子材料等制成的半透MBR膜。  

在MBR膜中使用的聚偏氟乙烯膜,长处是:它通量高、能耗相对较低,在高浓度产业废水处理中具有很大竞争力;缺点是:目前使用数量较小、膜的加工制备有一定难题。

Polymer organic membrane materials: polyacrylonitrile, polysulfone, fluoropolymer, etc.

Organic membrane has low cost, mature manufacturing process, and various pore sizes and forms, but the operation process is easy to be polluted, the strength is low, and the service life is short.

Inorganic membrane: it is a semi permeable MBR membrane made of inorganic materials, such as metals, metal oxides, ceramics, porous glass, zeolite, inorganic polymer materials, etc.

Polyvinylidene fluoride membrane used in MBR membrane has the advantages of high flux, relatively low energy consumption and great competitiveness in high concentration industrial wastewater treatment; The disadvantages are: at present, the use quantity is small, and there are some problems in the processing and preparation of membrane.

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