LITan,ZOUKang,YUHua-rong.Analysis of Biochemical Characteristics of Activated Sludge Based on Front?face Fluorescence[J].China Water & Wastewater,2025,41(7):117-123.
Analysis of Biochemical Characteristics of Activated Sludge Based on Front?face Fluorescence
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第7期
Page:
117-123
Column:
Date of publication:
2025-04-01
- Keywords:
- front-face fluorescence; activated sludge; nicotinamide adenine dinucleotide(NADH); biochemical characteristics; oxygen uptake rate (OUR); substrate degradation rate
- Abstract:
- Oxygen uptake rate (OUR) and substrate degradation rate in activated sludge are critical parameters for assessing the biochemical characteristics of activated sludge. However, traditional detection methods are complex and do not allow for in situ monitoring. To address this issue, the fluorescence characteristics of activated sludge in a sequential batch reactor (SBR) over a complete cycle were analyzed using front-face fluorescence excitation-emission matrix (FF-EEM). Additionally, the variations in OUR and substrate degradation rate were examined and compared. Nicotinamide adenine dinucleotide (NADH), as detected by FF-EEM, exhibited a strong correlation with substrate degradation rate during both stable and endogenous respiratory periods (R2=0.915 3). Throughout the entire cycle, NADH also showed a significant correlation with the OUR of activated sludge (R2=0.682 0). Consequently, it is anticipated that FF-EEM can be employed to monitor NADH fluorescence in activated sludge online, thereby facilitating the analysis of biochemical characteristics and guiding the intelligent regulation of the treatment process.
Last Update:
2025-04-01