SONGJia-lin,WANGMing-yuan,ZHANGYi,et al.Treatment Efficiency and Membrane Fouling Analysis of Different Ultrafiltration Combined Processes for Source Water of the South-to?North Water Diversion Project[J].China Water & Wastewater,2024,40(13):28-33.
Treatment Efficiency and Membrane Fouling Analysis of Different Ultrafiltration Combined Processes for Source Water of the South-to?North Water Diversion Project
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第13期
Page:
28-33
Column:
Date of publication:
2024-07-01
- Keywords:
- source water of the South-to-North Water Diversion Project; coagulation sedimentation; ozone/activated carbon; ultrafiltration; membrane fouling; TMP; 3D-EEM
- Abstract:
- To explore the treatment efficiency of different ultrafiltration (UF) combined processes on the source water of the South-to-North Water Diversion Project, a study on various UF combined processes was conducted. The study examined the removal efficiency of conventional water quality parameters such as turbidity, color, CODMn, UV254, etc., by different units combination of the coagulation sedimentation-ozone/activated carbon-UF full?scale process. Furthermore, the transmembrane pressure（TMP） and membrane fouling under three different operational conditions: direct UF, coagulation sedimentation-UF, and coagulation sedimentation-ozone/activated carbon-UF were investigated. The results indicated that the coagulation sedimentation process exhibited a higher removal rate for turbidity and color, but a relatively poor removal efficiency for organic matter. In comparison to conventional coagulation sedimentation processes, the coagulation sedimentation-ozone/activated carbon process demonstrated better removal efficiency for organic matter. UF, serving as the final barrier, could further enhance the removal of turbidity, color and organic matter in the combined process. Under different combined process conditions, standard blocking model and cake filtration model were identified as the predominant types of membrane fouling with better fitting effects. Membrane fouling increased rapidly during direct UF of raw water, whereas the combination of conventional and advanced treatment processes effectively mitigated UF membrane fouling.
Last Update:
2024-07-01