Cao Xi, Liu Tianqi, Li Xiang, Huang Yong, Nie Qin, Li Ming
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, China.
Water Res X. 2024 Dec 2;26:100288. doi: 10.1016/j.wroa.2024.100288. eCollection 2025 Jan 1.
A full-scale simultaneous partial nitrification, anaerobic ammonia oxidation (anammox), and denitrification (SNAD) reactor was initiated to address the problem of high energy consumption for the treatment of low C/N wastewater. The SNAD system achieved a nitrogen removal rate of 0.9 kg/(m·d) at an influent NH₄-N concentration of 500 mg/L after 450 days of stable operation. Partial nitrification was achieved by maintaining free ammonia levels at 0.8 ± 0.3 mg/L and dissolved oxygen concentrations between 0.3 mg/L and 1.2 mg/L, which resulted in synergistic nitrogen removal, with anammox contributing 61 % and denitrification contributing 39 %. Microbiological analyses indicated that the dominant microorganisms were , and . In conclusion, study provides a solid foundation for the broader implementation of the SNAD process in wastewater treatment systems.
启动了一个全尺寸同步亚硝化、厌氧氨氧化（anammox）和反硝化（SNAD）反应器，以解决处理低碳氮比废水时高能耗的问题。经过450天的稳定运行，在进水NH₄-N浓度为500 mg/L的情况下，SNAD系统实现了0.9 kg/(m·d)的氮去除率。通过将游离氨水平维持在0.8±0.3 mg/L和溶解氧浓度在0.3 mg/L至1.2 mg/L之间实现了亚硝化，这导致了协同脱氮，其中anammox贡献了61%，反硝化贡献了39%。微生物分析表明，优势微生物是 ，和 。总之，该研究为SNAD工艺在废水处理系统中的更广泛应用提供了坚实的基础。
