Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China.
School of Civil Engineering, Wuhan University, Wuhan, 430072, China.
J Hazard Mater. 2020 Jan 15;382:121043. doi: 10.1016/j.jhazmat.2019.121043. Epub 2019 Aug 21.
Aerobic granular sludge-based simultaneous nitrification, denitrification and phosphorus removal (SNDPR) systems were configured for the treatment of low-strength municipal wastewater. Granular characteristics, process performance, and the corresponding microbial ecology dynamics were comprehensively explored with sodium acetate and succinate as mixed carbon source. Results revealed that aerobic granules kept structural and functional resilience, while mixed carbon source largely altered and balanced the growth and competition of phosphorus/glycogen accumulating organisms (PAOs/GAOs). Appropriate ratio of mixed carbon source was vital for superb physiochemical behaviors and reliable removal performance by aerobic granules. Therefore, the aerobic granular SNDPR system could achieve deep-level nutrients removal through enhancing the anaerobic carbon uptake rate and strengthening the carbon usage efficiency. The present work could add some guiding sight into the application of aerobic granular SNDPR system for wastewater treatment.
基于好氧颗粒污泥的同步硝化反硝化除磷（SNDPR）系统被配置用于处理低强度城市废水。使用乙酸钠和琥珀酸钠作为混合碳源，全面探索了颗粒的特性、工艺性能以及相应的微生物生态动力学。结果表明，好氧颗粒保持了结构和功能的弹性，而混合碳源则极大地改变和平衡了聚磷/糖原积累菌（PAOs/GAOs）的生长和竞争。混合碳源的适当比例对于好氧颗粒的优异的物理化学行为和可靠的去除性能至关重要。因此，好氧颗粒 SNDPR 系统可以通过提高厌氧碳吸收速率和增强碳利用效率来实现深层次的营养物去除。本工作可为好氧颗粒 SNDPR 系统在废水处理中的应用提供一些指导。
