A comparative study of waste activated sludge disintegration by electrochemical pretreatment process combined with hydroxyl and sulfate radical based oxidants

2020 ◽  
Vol 8 (4) ◽  
pp. 103918 ◽  
Author(s):  
Hanife Sari Erkan ◽  
Guleda Onkal Engin
Keyword(s):  
Comparative Study ◽  
Activated Sludge ◽  
Sulfate Radical ◽  
Waste Activated Sludge ◽  
Electrochemical Pretreatment

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

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

Enhancement of anaerobic digestion of waste activated sludge by electrochemical pretreatment

Fuel ◽  
2014 ◽  
Vol 130 ◽  
pp. 279-285 ◽  
Author(s):  
Bao Yu ◽  
Jianbo Xu ◽  
Haiping Yuan ◽  
Ziyang Lou ◽  
Jinxian Lin ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Electrochemical Pretreatment

A comparative study between mechanical, thermal and oxidative disintegration techniques of waste activated sludge

2002 ◽  
Vol 46 (10) ◽  
pp. 79-87 ◽  
Author(s):  
P. Camacho ◽  
S. Deleris ◽  
V. Geaugey ◽  
P. Ginestet ◽  
E. Paul
Keyword(s):  
Comparative Study ◽  
Activated Sludge ◽  
Contact Time ◽  
Waste Activated Sludge ◽  
Sludge Flocs ◽  
Oxidative Treatment ◽  
Mineral Fraction ◽  
Wide Range ◽  
Micro Organisms ◽  
Limiting Value

The release performances of an organic and mineral activated sludge matrix were studied for a wide range of disintegration treatments like mechanical, thermal, thermal-chemical and oxidative disintegration techniques. The maximal COD release was 35% of total COD after 24 hours contact time at 95°C. A limiting value of 60% COD release was obtained for 500 and 700 bars after 10 passes. Concerning the oxidative disintegration techniques (O3 and H2O2), a limiting value of around 60-65% of TOC release was observed. Therefore, it was hypothesised that thermal and mechanical treatments allow mainly for breaking apart the micro-organisms while the oxidative treatment destroys the sludge flocs and disrupts the micro-organisms. A release effect of the mineral fraction is observed only oxidative disintegration techniques.

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