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膜生物反应器(MBR)是目前水处理领域中的热点之一,但是中空纤维膜的强度低、亲水性差的缺点限制了它的广泛应用。首先设计并制造了集束型喷丝头,然后以聚醚砜为膜材料,利用干/湿法纺制了截留分子量分别为10KD和20KD,水通量为15～100 L/(m2.h.0.1MPa),爆破压力为0.5～1.0MPa,拉伸强度可达10MPa以上的高强度聚醚砜中空纤维膜;再利用有机/无机共混改性,通过引入金属离子和可溶性聚合物的络合反应形成的络合物,制得了截留分子量分别为6KD、10KD、20KD、50KD、100KD、水通量达到25～400 L/(m2.h.0.1MPa)的一系列强度高、亲水性好的聚醚砜中空纤维超滤膜。
Membrane bioreactor (MBR) is one of the hot spots in the field of water treatment at present. However, the shortcomings of low strength and poor hydrophilicity of hollow fiber membranes limit its wide application. Firstly, a bundle-type spinneret was designed and manufactured. Then, polyethersulfone was used as a membrane material. The molecular weight cut-off was 10KD and 20KD respectively, and the water flux was 15 ~ 100 L / (m2.h. 0.1MPa), burst pressure of 0.5 ~ 1.0MPa, tensile strength up to 10MPa or more high-strength polyether sulfone hollow fiber membrane; re-use of organic / inorganic blend modification, by introducing metal ions and soluble polymer complex The complex formed by the reaction produced a series of high strength and good hydrophilicity with molecular weight cut-off of 6KD, 10KD, 20KD, 50KD and 100KD respectively and water flux of 25-400 L / (m2.h.0.1MPa) Polyether sulfone hollow fiber ultrafiltration membrane.