HIGH-SOLIDS ANAEROBIC DIGESTION OF SEWAGE SLUDGE —EFFECTS OF PRETREATMENT OF WASTE ACTIVATED SLUDGE

2018 ◽  
Vol 74 (7) ◽  
pp. III_187-III_194 ◽  
Author(s):  
Masanobu TAKASHIMA ◽  
Nobuichi NAKAO
Keyword(s):  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
High Solids

Enhanced high-solids anaerobic digestion of waste activated sludge by the addition of scrap iron

2014 ◽  
Vol 159 ◽  
pp. 297-304 ◽  
Author(s):  
Yaobin Zhang ◽  
Yinghong Feng ◽  
Qilin Yu ◽  
Zibin Xu ◽  
Xie Quan
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
High Solids ◽  
Scrap Iron

Occurrence, effect, and fate of residual microplastics in anaerobic digestion of waste activated sludge: A state-of-the-art review

2021 ◽  
pp. 125035
Author(s):  
Zhang-Wei He ◽  
Wen-Jing Yang ◽  
Yong-Xiang Ren ◽  
Hong-Yu Jin ◽  
Cong-Cong Tang ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
State Of The Art ◽  
Waste Activated Sludge

Modified ADM1 disintegration/hydrolysis structures for modeling batch thermophilic anaerobic digestion of thermally pretreated waste activated sludge

2009 ◽  
Vol 43 (14) ◽  
pp. 3479-3492 ◽  
Author(s):  
Ivan Ramirez ◽  
Alexis Mottet ◽  
Hélène Carrère ◽  
Stéphane Déléris ◽  
Fabien Vedrenne ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Thermophilic Anaerobic Digestion

Effects of thermochemical pretreatment on the anaerobic digestion of waste activated sludge

1997 ◽  
Vol 35 (8) ◽  
pp. 209-215 ◽  
Author(s):  
Shuzo Tanaka ◽  
Toshio Kobayashi ◽  
Ken-ichi Kamiyama ◽  
Ma. Lolita N. Signey Bildan
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Production Rate ◽  
Methane Production ◽  
Waste Activated Sludge ◽  
Batch Experiments ◽  
Industrial Wastewaters ◽  
Thermochemical Pretreatment ◽  
Chemical Heating ◽  
Methane Production Rate

Effects of pretreatment on the anaerobic digestion of waste activated sludge (WAS) were investigated in terms of VSS solubilization and methane production by batch experiments. The methods of pretreatment studied are NaOH addition (chemical), heating (thermal) and heating with NaOH addition (thermochemical) to the domestic WAS and to the combined WAS from domestic, commercial and industrial wastewaters. The thermochemical pretreatment gave the best result among three methods in the combined WAS, i.e., the VSS was solubilized by 40-50% and the methane production increased by more than 200% over the control when the WAS was heated at 130°C for 5 minutes with the dose 0.3 g NaOH/g VSS. In the domestic WAS, the VSS solubilization rate was 70-80% but the increase of the methane production was about 30% after thermochemically pretreated. The domestic WAS consists of 41% protein, 25% lipid and 14% carbohydrate on COD basis, and the solubilization rate of protein, which is the largest constituent of the WAS, was 63% in the thermochemical pretreatment. Although the effect of the thermochemical pretreatment on the methane production was higher to the combined WAS than to the domestic WAS, the methane production rate was 21.9 ml CH4/g VSSWAS·day in the domestic WAS and 12.8 ml CH4/g VSSWAS·day in the combined WAS.

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