SUN Jing,ZHAO Ge-ge,ZHANG Yun-bo,et al.Influencing Factors and Fluorescence Spectrum Characteristics of DOM Removed by Potassium Ferrate Oxidation[J].China Water & Wastewater,2021,37(23 23):21-27.
Influencing Factors and Fluorescence Spectrum Characteristics of DOM Removed by Potassium Ferrate Oxidation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
23 23
Page:
21-27
Column:
Date of publication:
2021-12-01
- Keywords:
- potassium ferrate oxidation; drinking water treatment; dissolved organic matter; three-dimensional fluorescence spectroscopy
- Abstract:
- To investigate the effect of potassium ferrate oxidation on removal of dissolved organic matter (DOM) in drinking water, the effects of reaction time, initial pH and potassium ferrate dosage on removal efficiency of dissolved organic carbon (DOC) and UV254 in raw water of Xueshan Waterworks in Jinan were explored, and fluorescence components of DOM in the water were analyzed qualitatively and quantitatively by three-dimensional fluorescence spectroscopy (EEM) combined with fluorescence region integral (FRI) method. When the dosage of potassium ferrate was 20 mg/L, the initial pH value was 6, stirring at 150 r/min for 40 s and static settling time for 30 min, the removal effect of DOM in water was the best, and the removal rates of DOC and UV254 reached 15.2% and 69.2% respectively. The fluorescence analysis showed that potassium ferrate significantly reduced the fluorescence intensity of humus. The calculation of fluorescence index (FI) and biological index (BIX) indicated that DOM in all treated water samples had strong autogenic characteristics.
Last Update:
2021-12-01