School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China.
School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China.
Bioresour Technol. 2017 Nov;244(Pt 1):33-39. doi: 10.1016/j.biortech.2017.07.124. Epub 2017 Jul 23.
The effect of glucose on nitrogen removal and microbial communities in the anammox-denitrification systems was investigated. The optimal nitrogen removal could be achieved when the influent glucose concentration was 56.4mgL. The influent nitrite to ammonium ratio of 0.95-1.40 would not obviously affect the nitrogen removal due to the coexistence of anammox, denitrification and partial denitrification. The anammox activity was deteriorated with increasing glucose concentration. When the influent glucose concentration was increased to 374.9mgL, the average ammonium removal efficiency decreased from 97% to around 10% and anammox activity was seriously inhibited. The anammox activity quickly recovered with decreasing influent glucose and increasing influent nitrite. High-throughput sequencing analysis suggested that the predominant genus changed from Candidatus Kuenenia to Diaphorobacter with the addition of glucose and then changed to Hydrogenophaga with the decrease of glucose. It indicated that organics concentration had an effect on the microbial communities.
研究了葡萄糖对厌氧氨氧化-反硝化系统脱氮和微生物群落的影响。当进水葡萄糖浓度为 56.4mg/L 时，可实现最佳脱氮效果。由于厌氧氨氧化、反硝化和部分反硝化的共存，进水亚硝态氮与氨氮的比值在 0.95-1.40 之间不会明显影响脱氮效果。随着葡萄糖浓度的增加，厌氧氨氧化活性逐渐恶化。当进水葡萄糖浓度增加到 374.9mg/L 时，平均氨氮去除效率从 97%左右降至 10%左右，厌氧氨氧化活性受到严重抑制。随着进水葡萄糖的减少和进水亚硝态氮的增加，厌氧氨氧化活性迅速恢复。高通量测序分析表明，随着葡萄糖的加入，优势属从 Kuenenia 变为 Diaphorobacter，然后随着葡萄糖的减少变为 Hydrogenophaga。这表明有机物浓度对微生物群落有影响。
