CHENXiu-juan,CHENPeng,LIDong,et al.Research Progress in Sulfur?based Autotrophic Denitrification Technology and Its Application[J].China Water & Wastewater,2025,41(8):22-31.
硫自养反硝化技术及应用研究进展
- Title:
- Research Progress in Sulfur?based Autotrophic Denitrification Technology and Its Application
- Keywords:
- sulfur-based autotrophic denitrification; electron donors; hydraulic retention time; coupling process
- 摘要:
- 硫自养反硝化技术利用低价态硫作为电子供体，将硝酸盐氮或亚硝酸盐氮还原为氮气从而去除污水中的氮素，反应过程中无需额外添加有机碳源，同时具有污泥及温室气体产生量少等优势。综述了影响硫自养反硝化脱氮效果的因素，具体包括电子供体类型、温度、pH、水力停留时间（HRT）和硫氮比（S/N）等。引用部分案例对硫自养反硝化及其耦合工艺在各类废水处理中的应用情况进行说明，在此基础上对比了各类耦合工艺在实际应用中的优缺点。根据目前存在的问题对未来技术的发展进行了展望，指出了工艺参数的控制、优势菌种的富集以及新型生物载体硫源材料的开发是实现硫自养反硝化工艺高效且稳定运行的关键。
- Abstract:
- Sulfur-based autotrophic denitrification technology uses low valence sulfur as electron donors to reduce nitrate nitrogen or nitrite nitrogen to nitrogen to remove nitrogen from sewage. No additional organic carbon source is required in the reaction process, and it has the advantage of less sludge and greenhouse gas production. The factors affecting sulfur-based autotrophic denitrification were reviewed, including electron donor type, temperature, pH, and hydraulic retention time (HRT) and sulfur to nitrogen ratio (S/N). Several cases are presented to illustrate the application of sulfur-based autotrophic denitrification and its coupling process in various wastewater treatments. Based on this, the paper compares the advantages and disadvantages of various coupling processes in practical applications. According to the existing problems, the future development of the technology is prospected. It is suggested that controlling process parameters, enriching dominant bacteria, and developing new biological carrier sulfur source materials are the keys to achieve efficient and stable operation of sulfur-based autotrophic denitrification process.
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