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.
Research Progress in Sulfur?based Autotrophic Denitrification Technology and Its Application
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第8期
Page:
22-31
Column:
Date of publication:
2025-04-17
- Keywords:
- sulfur-based autotrophic denitrification; electron donors; hydraulic retention time; coupling process
- 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.
Last Update:
2025-04-17