Currently, wastewater treatment plants predominantly use biological processes to degrade and remove pollutants, which not only consume energy but also hinder resource recovery and generate significant greenhouse gas emissions. To address these issues , we developed a process coupled fluidized pellet bed with flow-electrode capacitive deionization (FPB-FCDl). This process separates pollutants from wastewater, rather than degrading them, and achieves high-quality effluent while providing a foundation for carbon and nitrgen resource, recovery with the separated high-concentration pollutants. Results showed that the removal rates of chemical oxygen demand (COD) and total phosphorus (TP) in the fluidized pellet bed (FPB) system were 70.71% and 84.64%, respectively. The removal rate of ammonia nitrogen (NH_4^+-N) in the flow-electrode capacitive deionization (FCDI) system was 98.50%. The final effluent concentrations of COD, TP, and NH_4^+-N were (13.43±1.24), (0.16±0.03), and (0.29±0.08) mg/L, respectively, meeting the Class IV surface water quality standards in China. Additionally, since the FPB system removed most non-dissolved or colloidal COD particles with diameters between 0.45-6.00 μm, it reduced the potential impact on the subsequent FCDl system. This process exhibited a low-carbon characteristic, with an energy consumption of 0.42 kg CO_2/m^3 during operation, which was 53.83% lower than that of traditional biological treatment processes. Furthermore, if the separated carbon source from the FPB system is utilized for anaerobic digestion to generate electricity, an additional 0.19 kg CO_2/m^3 of carbon emissions can be reduced. This study introduces a novel methodology for advancing next-generation wastewater treatment processes that are highly efficient, of superior quality, and have minimal carbon emissions.