ZHANGRui-jun,FANZhong-hang,HANZheng-shuang,et al.Combined Process of Micro-flocculation + Hollow Flat?sheet Ceramic Membrane for Treatment of Micro-polluted Surface Water[J].China Water & Wastewater,2023,39(11):23-29.
Combined Process of Micro-flocculation + Hollow Flat?sheet Ceramic Membrane for Treatment of Micro-polluted Surface Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第11期
Page:
23-29
Column:
Date of publication:
2023-06-01
- Keywords:
- micro-flocculation; hollow flat-sheet ceramic membrane; hollow fiber organic membrane; micro-polluted surface water; membrane fouling
- Abstract:
- Based on the systematical comparison with traditional PVDF hollow fiber MF membrane, the water purification efficiency as well as membrane fouling property of “micro-flocculation + MF” process was studied by taking the hollow flat-sheet ceramic MF membrane as the core component. The results showed that the selection of hollow flat-sheet ceramic membrane in the combined process of “micro-flocculation + MF” could not only ensure the effluent turbidity lower than 0.3 NTU, but also achieve a higher removal of organic matter with molecular weight less than 5 ku and protein. Consequently, the CODMn of effluent was kept lower than 3 mg/L, which could meet the requirement of the Standards for Drinking Water Quality (GB 5749-2022). In the meantime, it was confirmed that the hollow flat-sheet ceramic membrane presented stronger anti-fouling ability and cleanability than the hollow fiber organic membrane after the comprehensive comparison and analysis of membrane fouling resistance change, chemical cleaning efficiency and membrane surface SEM morphology.
Last Update:
2023-06-01