Waste activated sludge disintegration by hydroxyl and sulfate radical-based oxidation: a comparative study

2019 ◽  
Vol 5 (11) ◽  
pp. 2027-2040 ◽  
Author(s):  
Hanife Sari Erkan
Keyword(s):  
Hydrogen Peroxide ◽  
Comparative Study ◽  
Activated Sludge ◽  
Sulfate Radical ◽  
Waste Activated Sludge ◽  
Calcium Hypochlorite

To the best of my knowledge, this is the first study in the literature where hydrogen peroxide, calcium hypochlorite, peroxymonosulfate and peroxydisulfate were comparatively investigated in a study.

A comparative study of waste activated sludge conditioning with Fe(II)-peroxymonosulfate oxidative process

2020 ◽  
Vol 11 ◽  
pp. 100434
Author(s):  
Wanqing Ding ◽  
Wenbiao Jin ◽  
Xu Zhou ◽  
Lan Wang ◽  
Yibin Xiu ◽  
...  
Keyword(s):  
Comparative Study ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Oxidative Process ◽  
Sludge Conditioning

scholarly journals Effect of H2O2Oxidation/Alkaline Hydrolysis on Waste Activated Sludge Disintegration and Dewaterability

2018 ◽  
Vol 65 ◽  
pp. 05021 ◽  
Author(s):  
Gan Chin Heng ◽  
Mohamed Hasnain Isa ◽  
Ming Han Lim
Keyword(s):  
Hydrogen Peroxide ◽  
Reaction Time ◽  
Activated Sludge ◽  
Alkaline Hydrolysis ◽  
Optimum Operating ◽  
Waste Activated Sludge ◽  
Operating Parameters ◽  
Peroxide Oxidation ◽  
Operating Variables ◽  
H2o2 Oxidation

In the present study, the effect of hydrogen peroxide oxidation/alkaline hydrolysis was investigated on waste activated sludge (WAS), to enhance its disintegration and dewaterability. The effects of three operating parameters viz., pH, H2O2dose and reaction time, on the degree of WAS disintegration and dewaterability were assessed using response surface methodology. The optimum operating variables to achieve VSS removal 20%, CST reduction 20%, sCOD 6100 mg/L and EPS 455 mg/L were: pH 10.5, 1300 g H2O2/kg TS and 40 min reaction time. Results showed that WAS can be efficiently disintegrated and dewatered by H2O2 oxidation/alkaline hydrolysis for subsequent biological digestion.

Effect of sulfate radical oxidation on disintegration of waste activated sludge

2015 ◽  
Vol 104 ◽  
pp. 384-390 ◽  
Author(s):  
Weichao Ren ◽  
Zhen Zhou ◽  
Yeye Zhu ◽  
Lu-Man Jiang ◽  
Haijuan Wei ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Sulfate Radical ◽  
Waste Activated Sludge ◽  
Radical Oxidation
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