School of Energy Science and Engineering, University of Science and Technology of China, China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China.
Bioresour Technol. 2024 Feb;393:130057. doi: 10.1016/j.biortech.2023.130057. Epub 2023 Nov 19.
A novel vertical rotating microalgae-bacteria symbiotic biofilm reactor was built to treat the mixed wastewater containing municipal and soybean soaking wastewater. The reactor was operated in both sequential batch and semi-continuous modes. Under the sequential batch operation mode, the maximum removal rates for Chemical Oxygen Demand (COD), Total Nitrogen (TN), Total Phosphorus (TP), and Ammonia Nitrogen (NH-N) of the mixed wastewater were 95.6 %, 96.1 %, 97.6 %, and 100 %, respectively. During the semi-continuous operation, the water discharge indices decreased gradually and eventually stabilized. At stabilization, the removal rates of COD, TN, and NH-N achieved 98 %, 95 %, and 99.9 %, respectively. The maximum biomass productivity of the biofilm was 2.69 g·m·d. Additionally, the carbohydrate, protein and lipid comprised approximately 22 %, 51 % and 10 % of the dry weight of Chlorella. This study demonstrates the great potential of the microalgae-bacteria symbiotic biofilm system to treat food and domestic wastewater while harvesting microalgal biomass.
构建了一种新型垂直旋转微藻-细菌共生生物膜反应器来处理含有城市污水和大豆浸泡废水的混合废水。该反应器在序批式和半连续式两种模式下运行。在序批式运行模式下，混合废水中化学需氧量（COD）、总氮（TN）、总磷（TP）和氨氮（NH-N）的最大去除率分别为 95.6%、96.1%、97.6%和 100%。在半连续运行过程中，水排放量逐渐下降，最终稳定。在稳定状态下，COD、TN 和 NH-N 的去除率分别达到 98%、95%和 99.9%。生物膜的最大生物量生产力为 2.69g·m·d。此外，小球藻干重的碳水化合物、蛋白质和脂质分别约占 22%、51%和 10%。本研究表明，微藻-细菌共生生物膜系统在处理食品和生活污水的同时收获微藻生物质具有巨大的潜力。
