The BAC biofilter can remove the PPCPs, and then the following UF can reject micro-organisms and particles flowing out from the biofilter to ensure the quality of drinking water. The above coupling process makes up for the defects concerning respective operations of the BAC biofilter and UF. Although many pilot-scale setups were used to treat secondary wastewater effluent for water reclamation, this type of raw water quality was different from the river water, causing the different potential of biofilm growing. As far as we investigated, the lack of enough attention to long-term pilot study exists. Therefore, in this study, a BAC-UF system was carried out for several months with pilot scale to access the long-term removal performances and the respective contributions of BAC and UF. The relevant content has been supplemented and revised in the abstract to highlight the innovative points.
The novelty of the work must be clearly addressed and discussed, compare previous research with existing research findings and highlight novelty.