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首页> 外文期刊>Desalination and water treatment >Roles of organic matters, photo-oxidation and adsorption in the hybrid water treatment process of multi-channel ceramic MF and photocatalyst-loaded PES beads
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Roles of organic matters, photo-oxidation and adsorption in the hybrid water treatment process of multi-channel ceramic MF and photocatalyst-loaded PES beads

机译：有机物，光氧化和吸附在多通道陶瓷MF和负载有光催化剂的PES珠粒混合水处理过程中的作用

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The effect of natural organic matters (NOM) concentration on membrane fouling was investigated in a hybrid water process treatment of multi-channel ceramic microfiltration (MF) and titanium dioxide (TiO2) photocatalyst-loaded polyethersulfone (PES) beads with periodic water back-flushing. The PES beads were fluidized in the space between the outside of a 7-channel ceramic membrane (0.4 mu m average pore size) and the module inside. Kaolin was fixed at 30 mg/L and humic acid (HA) was varied from 2 to 10 mg/L to investigate effect of NOM. The resistance membrane fouling (R-f) increased dramatically as increasing HA. Finally, the highest total permeated volume (V-T) was acquired at HA 2 mg/L after 180 min operation. The treatment efficiencies of turbidity and UV254 absorbance were outstanding at 96.7%similar to 98.3% and 80.2%similar to 85.0%, respectively. The treatment efficiency proportions of UV254 absorbance were 70.8% for MF, 0.2% for TiO2 bead adsorption, and 10.1% for photo-oxidation for 4 mg/L of HA; however, those of turbidity were 97.5% for MF, but only 0.1% for adsorption and 0.4% for photo-oxidation. The role of photo-oxidation by the PES beads was the more important at low HA concentration; however, that of adsorption was the more dominant at high HA, for the organic matters treatment.
机译：在定期水反冲洗的多通道陶瓷微滤（MF）和二氧化钛（TiO2）光催化剂负载的聚醚砜（PES）珠的混合水处理中，研究了天然有机物（NOM）浓度对膜污染的影响。 。 PES珠粒在7通道陶瓷膜外部（平均孔径为0.4μm）和内部组件之间的空间中流化。高岭土固定在30 mg / L，腐殖酸（HA）在2至10 mg / L之间变化，以研究NOM的作用。电阻膜结垢（R-f）随着HA的增加而急剧增加。最后，在180分钟的操作后，以HA 2 mg / L获得了最高的总渗透量（V-T）。浊度和UV254吸光度的处理效率非常出色，分别为99.7％（98.3％）和80.2％（85.0％）。对于4 mg / L的HA，MF的UV254吸收率的处理效率比例为MF的70.8％，TiO2珠吸附的0.2％，光氧化的10.1％。然而，对于MF来说，浊度为97.5％，对于吸附来说仅为0.1％，对于光氧化为0.4％。在低HA浓度下，PES珠的光氧化作用更为重要。但是，对于有机物处理，在高HA下吸附是最主要的。

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