Hydrogen production and microbial diversity in sewage sludge fermentation preceded by heat and alkaline treatment

2012 ◽  
Vol 109 ◽  
pp. 239-243 ◽  
Author(s):  
Jung-hyun Kang ◽  
Daekeun Kim ◽  
Tae-jin Lee
Keyword(s):  
Sewage Sludge ◽  
Hydrogen Production ◽  
Microbial Diversity ◽  
Alkaline Treatment

Comparison of sewage sludge treatment systems for regions with hot climate

2007 ◽  
Vol 2 (1) ◽  
Author(s):  
Petia Mijaylova Nacheva ◽  
G. Moeller-Chávez ◽  
E. Ramírez-Camperos ◽  
L. Cardoso-Vigueros
Keyword(s):  
Sewage Sludge ◽  
Alkaline Treatment ◽  
Sludge Treatment ◽  
Tropical Regions ◽  
Aeration Time ◽  
Sludge Stabilization ◽  
Hot Climate ◽  
Aerobic Stabilization ◽  
Sewage Sludge Treatment ◽  
High Pathogenic

The tropical regions have specific problems associated with high pathogenic density in the sewage sludge. The aim of this study was to select an adequate sludge stabilization and valorization system comparing the performance of four technologies: anaerobic stabilization without heating, aerobic stabilization, alkaline treatment with lime and aerobic composting. The study was performed in a pilot plant which was built and operated during six months. The main problem for the beneficial use of the sludge was its pathogenicity. All the systems allowed obtaining stabilized products which met the bacteriological criteria for some kind of use. The compost and the alkalinized sludge were bacteriologically safe for use without restrictions in accordance with the Mexican regulations. The accomplishment of the parasitological criteria for use was however impossible with the anaerobic and with the aerobic systems. The compost obtained at 55-60°C with 25d aeration time and the alkaline sludge fulfill the criteria established by for forest and agriculture use and for soil conditioning. The composting could reach the requirements for unrestricted use when operated at temperatures 65-70°C during 45 days which makes it the most adequate sludge treatment system for hot climate regions.

Bio-hydrogen production from food waste and sewage sludge in the presence of aged refuse excavated from refuse landfill

2008 ◽  
Vol 33 (12) ◽  
pp. 2573-2579 ◽  
Author(s):  
Ming Li ◽  
Youcai Zhao ◽  
Qiang Guo ◽  
Xiaoqing Qian ◽  
Dongjie Niu
Keyword(s):  
Sewage Sludge ◽  
Hydrogen Production ◽  
Food Waste ◽  
Aged Refuse
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