化工进展2024，Vol.43Issue(2)：1098-1108,11.DOI:10.16085/j.issn.1000-6613.2023-0315
低强度超声波对高负荷厌氧氨氧化EGSB反应器运行性能的影响
Effect of low intensity ultrasound on operation performance of high load Anammox-EGSB reactor
摘要
Abstract
The effect of low intensity ultrasound on the treatment of high-ammonia-nitrogen wastewater by Anammox-EGSB reactor was studied.The effects of ultrasound treatment on the nitrogen removal performance of the reactor,characteristics of Anammox granular sludge,extracellular polymer and microbial flora were investigated.The results showed that low intensity ultrasound could improve the nitrogen removal efficiency of Anammox reactor,and the nitrogen load of influent was 6.03kg N/(m³·d),the total nitrogen removal rate of ultrasonic group was increased by 11.40%,and the impact resistance of nitrogen load was also enhanced.After periodic ultrasonic irradiation,the particle size of granular sludge was maintained at 1.0-1.5mm,which was beneficial to improve mass transfer efficiency,enhance the activity of Anammox granular sludge and reduce particle floating.The total amount of EPS of sludge in ultrasonic group increased significantly,and the increase of TB-EPS was more obvious,which was helpful to maintain the structural stability of granular sludge.The types of functional groups on the sludge surface remained unchanged,but the groups such as hydroxyl,carboxyl,and amino groups increased.The specific Anammox activity of granular sludge increased by 33.2%.Through the simplified Gompertz equation model,it was found that the growth rate of Anammox bacteria in the ultrasonic group(0.0127d-1)was higher than that in the control group(0.0107d-1).High-throughput sequencing showed that ultrasound promoted Anammox bacteria and their symbiotic bacteria,among which Candidatus Brocadia increased by 22.03%.At the same time,some denitrifying bacteria were seriously inhibited,so that the substrate and living space of Anammox bacteria were more sufficient.关键词
低强度超声波/厌氧氨氧化/颗粒污泥/微生物群落/氮负荷Key words
low intensity ultrasound/Anammox/granular sludge/microbial community/nitrogen load分类
资源环境引用本文复制引用
杨杰源,朱易春,赖雅芬,张超,田帅,谢颖..低强度超声波对高负荷厌氧氨氧化EGSB反应器运行性能的影响[J].化工进展,2024,43(2):1098-1108,11.基金项目
国家自然科学基金(52260004) （52260004）
江西省教育厅科技研究项目(GJJ210874) （GJJ210874）
江西理工大学高层次人才科研启动项目(205200100642) （205200100642）
江西省高层次高技能领军人才培养工程项目. （）
