Storage strategy of aerobic algae-bacteria granular consortia in photo-sequencing batch reactor

Aerobic algae-bacteria granular consortia (AAG) is a novel biotechnology for wastewater treatment, although the optimal storage operation is in favor of practical application and commercial production of AAG, the information about the performance response and microbial community evolution of AAG during storage process and activation process are still sparse. This experiment selected temperature, time and illumination condition as target parameters to firstly study the influence of storage process on the AAG. The results indicated that AAG could maintain the integrated granular structure under different storage conditions, yet the influence of storage conditions on the properties of AAG was significant. After storage and activation process, the specific removal rates of total phosphorus and ammonia nitrogen of AAG that stored at 25 °C were 1.41–1.98 mg/g SS and 15.44–17.92 mg/g SS, respectively, which were significantly higher than those stored at 4 °C and −25 °C (0.88–1.16 mg/g SS and 8.46–14.14 mg/g SS). The stored time showed significant negative relationship with the EPS concentration (R = −0.47, P