摘要
传统脱氮技术不仅消耗大量能量,而且有时难以达到污水排放标准。近年来生物脱氮技术发展迅速,短程反硝化作为一种新型脱氮工艺,因能为厌氧氨氧化工艺稳定生产NO_(2)^(-)-N而备受青睐。首先介绍了短程反硝化的原理,论述了不同种类污泥源和反应器对工艺启动的影响。其次对内外源性碳源、pH、盐度和重金属等影响因素展开了叙述,揭示了内源性碳源的优势和pH对关键酶活性的影响;重点总结了短程反硝化污泥颗粒化的进程,指出未来污泥颗粒化的研究方向是颗粒污泥的稳定性表现;简述了短程反硝化耦合厌氧氨氧化工艺的研究进展。最后基于耦合工艺从抑制机理、微生物、实际运行、工艺推广和资源化利用五个方面提出了研究建议。
Traditional nitrogen removal technology not only consumes a lot of energy,but also is difficult to meet the wastewater discharge standard. In recent years,biological nitrogen removal technology has developed rapidly. As a new type of nitrogen removal process,partial denitrification is favored because it can provide nitrite stably for the anaerobic ammonia oxidation(Anammox)process. Firstly,the principles and initiation strategies of partial denitrification were introduced,and the effects of different sludge sources and reactors on the start-up of the process were discussed. Secondly,the influencing factors such as endogenous and exogenous carbon sources,pH,salinity,and heavy metals were described.The advantage of endogenous carbon source and the effect of pH on key enzyme activity were revealed. Then,the sludge granulation of partial denitrification was summarized. At the same time,it was pointed out that the research direction of sludge granularization in the future was the stability performance of granular sludge. In addition,the research progress of partial denitrification coupled with Anammox process was briefly reviewed. Finally,based on the coupling process,research suggestions were put forward from five aspects,including inhibition mechanism,microorganism,actual operation,process promotion and resource utilization.
作者
徐云翔
李天皓
郭之晗
黄子川
刘文如
沈耀良
XU Yunxiang;LI Tianhao;GUO Zhihan;HUANG Zichuan;LIU Wenru;SHEN Yaoliang(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;National and Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology,Suzhou 215009,China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou 215009,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2022年第10期53-64,共12页
Industrial Water Treatment
关键词
短程反硝化
厌氧氨氧化
颗粒污泥
亚硝酸盐积累
耦合工艺
partial denitrification
Anammox
granulation sludge
nitrite accumulation
coupling process
