scholarly journals Microbial Insight into a Pilot-Scale Enhanced Two-Stage High-Solid Anaerobic Digestion System Treating Waste Activated Sludge

2017 ◽  
Vol 14 (12) ◽  
pp. 1483 ◽  
Author(s):  
Jing Wu ◽  
Zhiping Cao ◽  
Yuying Hu ◽  
Xiaolu Wang ◽  
Guangqi Wang ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Pilot Scale ◽  
Waste Activated Sludge ◽  
Two Stage ◽  
High Solid ◽  
Insight Into

Extracellular polymeric substances and dewaterability of waste activated sludge during anaerobic digestion

2014 ◽  
Vol 70 (9) ◽  
pp. 1555-1560 ◽  
Author(s):  
Fenxia Ye ◽  
Xinwen Liu ◽  
Ying Li
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Extracellular Polymeric Substance ◽  
Extracellular Polymeric Substances ◽  
Waste Activated Sludge ◽  
Sludge Dewatering ◽  
Capillary Suction ◽  
Relationship Analysis ◽  
The Relationship ◽  
Insight Into

Anaerobic digestion of waste activated sludge was conducted to gain insight into the mechanisms underlying change in sludge dewaterability during its anaerobic digestion. Unexpectedly, the results indicated that sludge dewatering properties measured by capillary suction time only deteriorated after 10 days of anaerobic digestion, after which dewaterability recovered and remained stable. The loosely bound extracellular polymeric substance (LB-EPS) content increased three-fold after 20 days of anaerobic digestion, and did not change significantly during the remaining 30 days. The tightly bound EPS (TB-EPS) content reduced slightly after 20 days of anaerobic digestion, and stabilized during the last 30 days. Polysaccharides (PS) and proteins (PN) content in LB-EPS increased after 10 days of anaerobic digestion. However, PS and PN contents in TB-EPS decreased slightly. The relationship analysis showed that only LB-EPS correlated with dewaterability of the sludge during anaerobic digestion.

High rate mesophilic, thermophilic, and temperature phased anaerobic digestion of waste activated sludge: A pilot scale study

2012 ◽  
Vol 32 (6) ◽  
pp. 1196-1201 ◽  
Author(s):  
David Bolzonella ◽  
Cristina Cavinato ◽  
Francesco Fatone ◽  
Paolo Pavan ◽  
Franco Cecchi
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Pilot Scale ◽  
High Rate ◽  
Waste Activated Sludge

scholarly journals Ammonia–methane two-stage anaerobic digestion of dehydrated waste-activated sludge

2008 ◽  
Vol 79 (6) ◽  
Author(s):  
Yutaka Nakashimada ◽  
Yasutaka Ohshima ◽  
Hisao Minami ◽  
Hironori Yabu ◽  
Yuzaburo Namba ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Two Stage

Revealing hydrodynamics and energy efficiency of mixing for high-solid anaerobic digestion of waste activated sludge

2021 ◽  
Vol 121 ◽  
pp. 1-10
Author(s):  
Min-Hua Cui ◽  
Zhi-Yong Zheng ◽  
Meng Yang ◽  
Thangavel Sangeetha ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
High Solid

Oxidative and thermo-oxidative co-treatment with anaerobic digestion of excess municipal sludge

2005 ◽  
Vol 52 (1-2) ◽  
pp. 237-244 ◽  
Author(s):  
J.A. Cacho Rivero ◽  
N. Madhavan ◽  
M.T. Suidan ◽  
P. Ginestet ◽  
J.-M. Audic
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Fecal Coliform ◽  
Single Stage ◽  
Waste Activated Sludge ◽  
Municipal Sludge ◽  
Two Stage ◽  
Two Stages ◽  
Solids Removal

The effect of oxidative and thermo-oxidative co-treatment of excess municipal sludge was investigated. A mixture of primary and waste activated sludge was anaerobically treated using two different configurations: i) two stages and ii) a single stage with recycling. Oxidative or thermo-oxidative co-treatment placed in between the reactor or in the recycle line was studied. A two-stage configuration with no co-treatment served as a control and resulted in 50.1% overall solids removal. Compared to the control, an increase in solids removal of 10.8 and 2.7% was observed when oxidative co-treatment was placed between reactors and in the recycle line respectively. When thermo-oxidative co-treatment was placed between the two stages or in the recycle line an increase in solids removal of 25.1 and 26.9% respectively was observed. The performances of the different configurations were also evaluated with parameters such as COD, TKN, ammonia, and fecal coliform concentration.

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