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Sulfate Radicals: A New Tool for Enhancing Sludge Dewatering
Yue Lai, Chao Wang, Jie Zhang, Shungui Zhou, Changgeng Liu, Jie Ye
Progress in Chemistry, 2024, 36(5): 798-814.   DOI: 10.7536/PC230707

Temperature
(℃)		 Chemical Sludge type Solid content（g/L） Dosage Reaction time CST（s） CST reduction（%） Ref
120 PDS WAS TSS = 45.21 ZVI = 100 mg/g TSS
PDS = 200 mg/g TSS		 30 min 190.6 72.4 122
80 PDS WAS TSS = 16.03 PDS = 2.0 mmol/g VSS 60 min 88.1 76.6 121
PMS PMS = 0.5 mmol/g VSS 53.9
70 PDS WAS TS = 16.5 PDS = 120 mg/g VS
Skeleton = 150 mg/g VS		 10 min 163.5 65.5 120
80 PDS WAS TSS = 41.3 PDS = 2.0 mmol/g VSS 60 min 54.0 40.3 119
75 PMS WAS TS = 12.6 PMS = 150 mg/g VS
Skeleton = 100~400 mg/g VS		 40 min 158.5 63.9 126
55 PDS ADS TS = 29.3 PDS = 3 g/L 24 h 230 33.2 127
PMS PMS = 3 g/L 28.0
120 PDS WAS TSS = 24.49 PDS = 120 mg/g TSS 30 min 100.7 57.6 128
60 PMS WAS TSS = 13.6 Fe2+ = 0.6 mmol/g VSS
PMS = 1.0 mmol/g VSS		 20 min 206.3 92.9 124
60 PDS WAS TSS = 26.4 Fe2+ = 1.5 mmol/g VSS
PDS = 1.2 mmol/g VSS		 20 min 3006.1 96.6 123
Table 3 Sludge dewatering performance after treatment by thermally activated PMS/PDS oxidation
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