TY - JOUR
T1 - Effect of sulfate radical oxidation on disintegration of waste activated sludge
AU - Ren, Weichao
AU - Zhou, Zhen
AU - Zhu, Yeye
AU - Jiang, Lu Man
AU - Wei, Haijuan
AU - Niu, Tianhao
AU - Fu, Penghao
AU - Qiu, Zhan
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - The effects of sulfate radical oxidation pretreatment on the disintegration of waste activated sludge were investigated at different dosages of peroxymonosulfate (PMS). Indicators for estimating sludge disintegration were selected by analyzing concentrations of released substances and statistical analysis. Results indicated that COD and total phosphorus (TP) were unsuitable for estimating sludge disintegration by oxidants. Pearson correlation analysis indicated that total nitrogen (TN), total organic carbon (TOC), UV254 and polysaccharides had strong correlation with each other, thus suitable for sludge disintegration estimation. Chemical analysis and 3D-EEM fluorescence spectra showed that at high dosage, sulfate radical oxidation was effective for sludge disintegration by inducing aromatic and tryptophan protein-like substances degradation. At PMS dosage of 12mg(g SS)-1, sludge disintegration degrees in TOC and TN were 24.8% and 29.9%, respectively.
AB - The effects of sulfate radical oxidation pretreatment on the disintegration of waste activated sludge were investigated at different dosages of peroxymonosulfate (PMS). Indicators for estimating sludge disintegration were selected by analyzing concentrations of released substances and statistical analysis. Results indicated that COD and total phosphorus (TP) were unsuitable for estimating sludge disintegration by oxidants. Pearson correlation analysis indicated that total nitrogen (TN), total organic carbon (TOC), UV254 and polysaccharides had strong correlation with each other, thus suitable for sludge disintegration estimation. Chemical analysis and 3D-EEM fluorescence spectra showed that at high dosage, sulfate radical oxidation was effective for sludge disintegration by inducing aromatic and tryptophan protein-like substances degradation. At PMS dosage of 12mg(g SS)-1, sludge disintegration degrees in TOC and TN were 24.8% and 29.9%, respectively.
KW - Dissolved organic matters (DOM)
KW - Excitation-emission matrix (EEM)
KW - Sludge disintegration
KW - Sulfate radicals
KW - Waste activated sludge
UR - https://www.scopus.com/pages/publications/84938065601
U2 - 10.1016/j.ibiod.2015.07.008
DO - 10.1016/j.ibiod.2015.07.008
M3 - 文章
AN - SCOPUS:84938065601
SN - 0964-8305
VL - 104
SP - 384
EP - 390
JO - International Biodeterioration and Biodegradation
JF - International Biodeterioration and Biodegradation
ER -