Utilizing external aeration to enhance the performance of microalgae-bacteria symbiosis (ABS) system has been extensively studied. However, inappropriate aeration damaged ABS system stability. A nighttime aeration mode (NA-ABS) in different aeration intensities (20, 50, 100 mL/min) was adopted to compare to continuous aeration microalgae-bacteria symbiosis (CA-ABS) mode and no-aerated mode on pollutants removal efficiencies and system stability. Results showed that NA-ABS system performed better on total organic carbon (TOC), NH₄⁺-N, total nitrogen (TN) and PO₄³⁻ removal than CA-ABS system, especially under the aeration intensity of 20 mL/min (NAI20), with the removal efficiencies of 96.59%, 99.18%, 90.30% and 89.16%, respectively. These results were because NA-ABS system prevented CO₂ stripping and provided more dissolved inorganic carbon (DIC) for the microalgae growth. Furthermore, less CO₂ stripping released the competition between microalgae and autotrophic bacteria for the DIC, leading to a more stable ABS system during long-term operation. This paper suggested that NA-ABS system would provide some new insights into ABS system and be helpful for further study.

利用外部曝气来增强微藻-细菌共生（ABS）系统的性能已得到广泛研究。但是，不适当的充气会损坏ABS系统的稳定性。采用夜间曝气模式（NA-ABS）以不同的曝气强度（20、50、100 mL / min）比较连续曝气微藻-细菌共生（CA-ABS）模式和无曝气模式对污染物去除效率和系统稳定性。结果表明，NA-ABS系统在总有机碳（TOC），NH ₄ ⁺ -N，总氮（TN）和PO ₄ ^3-方面表现更好。去除率比CA-ABS系统高，尤其是在20 mL / min的曝气强度（NAI20）下，去除率分别为96.59％，99.18％，90.30％和89.16％。这些结果是因为NA-ABS系统阻止了CO _2的汽提并为微藻的生长提供了更多的溶解性无机碳（DIC）。此外，较少的CO ₂汽提释放了微藻和自养细菌之间争夺DIC的竞争，从而在长期运行过程中获得了更稳定的ABS系统。本文认为，NA-ABS系统将为ABS系统提供一些新的见解，并为进一步的研究提供帮助。