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.
超滤作为臭氧/生物活性炭前处理工艺的适用性研究
- Title:
- Applicability of Ultrafiltration as the Pretreatment for Ozonation and Biological Activated Carbon Filtration Process
- Keywords:
- pretreatment; ultrafiltration; ozonation and biological activated carbon (O3/BAC); disinfection by-products (DBPs); assimilable organic carbon (AOC)
- 摘要:
- 用超滤替代常规工艺作为臭氧/生物活性炭的前处理工艺，组成超滤-臭氧/生物活性炭工艺，并与常规-臭氧/生物活性炭进行比较，考察两种工艺对污染物的去除效果及消毒副产物生成情况。结果表明，超滤可有效截留浊度和藻类，虽然对TOC和UV254的去除效果劣于常规工艺，但后续臭氧/生物活性炭的去除效果远优于采用常规工艺作为前处理的去除效果。此外，超滤替代常规工艺作为前处理可有效提升臭氧/生物活性炭去除三卤甲烷和卤乙酸前体物的效果；由于超滤有效去除了可生物同化有机碳（AOC）和生物可降解溶解性有机碳（BDOC）的前体物，后续臭氧/生物活性炭的去除效果提升。三维荧光平行因子分析表明，超滤前处理可有效提高活性炭去除有机物的效果。
- 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.
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