Enhancement of Anaerobic Digestion Performance by Hydrodynamic Cavitation Solubilization of Waste Sludge

2018 ◽  
Vol 26 (4) ◽  
pp. 33-41
Author(s):  
Jong-Oh Kim ◽  
Dong-Gi Jung ◽  
Hye-Lin Park ◽  
Joon-Seok Hwang
Keyword(s):  
Anaerobic Digestion ◽  
Hydrodynamic Cavitation ◽  
Waste Sludge

scholarly journals A Review on Anaerobic Co-Digestion with a Focus on the Microbial Populations and the Effect of Multi-Stage Digester Configuration

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1106 ◽  
Author(s):  
Anahita Rabii ◽  
Saad Aldin ◽  
Yaser Dahman ◽  
Elsayed Elbeshbishy
Keyword(s):  
Anaerobic Digestion ◽  
Microbial Population ◽  
System Stability ◽  
Microbial Consortia ◽  
Microbial Populations ◽  
Stage Versus ◽  
Two Stage ◽  
Waste Sludge ◽  
Multi Stage ◽  
Mode A

Recent studies have shown that anaerobic co-digestion (AnCoD) is superior to conventional anaerobic digestion (AD). The benefits of enhanced bioenergy production and solids reduction using co-substrates have attracted researchers to study the co-digestion technology and to better understand the effect of multi substrates on digester performance. This review will discuss the results of such studies with the main focus on: (1) generally the advantages of co-digestion over mono-digestion in terms of system stability, bioenergy, and solids reduction; (2) microbial consortia diversity and their synergistic impact on biogas improvement; (3) the effect of digester mode, i.e., multi-stage versus single stage digestion on AnCoD. It is essential to note that the studies reported improvement in the synergy and diverse microbial consortia when using co-digestion technologies, in addition to higher biomethane yield when using two-stage mode. A good example would be the co-digestion of biodiesel waste and glycerin with municipal waste sludge in a two-stage reactor resulting in 100% increase of biogas and 120% increase in the methane content of the produced biogas with microbial population dominated by Methanosaeta and Methanomicrobium.

The Effect of Biology Activity on WS during Anaerobic Digestion

2011 ◽  
Vol 194-196 ◽  
pp. 790-793
Author(s):  
Dong Su Bi ◽  
Xiao Pin Guo
Keyword(s):  
Anaerobic Digestion ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Release Mechanism ◽  
Paper Sludge ◽  
Waste Sludge ◽  
In The Beginning

The effect of biology activity on liquid indicators (pH, SCOD, VSS ,SOP etc.) and solid indicators (PHA , hepatin, TP etc.) of phosphorus-rich waste sludge during the anaerobic digestion were studied in this paper. Sludge used in this study was obtained from a sewage treatment plant in which the A/O process was used. The results indicated that the hydrolyzing of waste sludge was promoted by the addition of bacterium inhibitor in the beginning of experiment. However, the presence of bacterium inhibitor was disadvantage to both hydrolyzed and biological release mechanism of phosphorus in anaerobic digestion system.

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