DONGBing-zhi,HEHuan,LITian,et al.Applicability of Ultrafiltration as the Pretreatment for Ozonation and Biological Activated Carbon Filtration Process[J].China Water & Wastewater,2025,41(7):33-38.
Applicability of Ultrafiltration as the Pretreatment for Ozonation and Biological Activated Carbon Filtration Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第7期
Page:
33-38
Column:
Date of publication:
2025-04-01
- Keywords:
- pretreatment; ultrafiltration; ozonation and biological activated carbon (O3/BAC); disinfection by-products (DBPs); assimilable organic carbon (AOC)
- Abstract:
- This study applied ultrafiltration (UF) as pretreatment of ozonation and biological activated carbon (O3/BAC) processes, forming a treatment train of “UF-O3/BAC”, to replace the treatment train of “conventional processes (e.g. coagulation-sedimentation-sand filtration)-O3/BAC”. The effectiveness of both trains in removing pollutants and disinfection by-product precursors were compared. The results showed that UF effectively removed turbidity and algae; and although UF reduced organic matters characterized by TOC and UV254 less effectively than the conventional processes, the O3/BAC following UF performed much better than that after the conventional processes. Compared to the “conventional processes-O3/BAC” train, the “UF-O3/BAC” train exhibited higher efficiency in removing precursors of trihalomethanes (THMs) and haloacetic acids (HAAs); as UF effectively removed precursors of assimilable organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC), the performance of the following O3/BAC process on removing AOC and BDOC was enhanced. Three-dimensional fluorescence spectroscopy in couple with parallel factor analysis showed that UF pretreatment significantly improved the capacity of the BAC in removing organic matters.
Last Update:
2025-04-01