Gravimetric Evolution During Sewage Sludge Biostabilization
Paola Posligua 1, 2  
,  
Elvito Villegas 3  
,  
 
 
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1
Universidad de Las Americas (UDLA), Environmental Engineering, Engineering and Agrarian Sciences, 59302, Quito-Ecuador
2
Ministerio de Defensa, Armada del Ecuador, Dirección General de Intereses Marinos, Instituto Antártico Ecuatoriano, 59316, Guayaquil – Ecuador
3
Universidad Nacional Mayor de San Marcos (UNMSM), 07001, Lima, Perú
4
Universidad Agraria del Ecuador (UAE), Environmental Engineering, Agrarian Sciences Faculty, 59304, Guayaquil-Ecuador
Publish date: 2018-09-01
 
J. Ecol. Eng. 2018; 19(5):76–85
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ABSTRACT:
Sewage sludge is a by-product in the wastewater treatment and is an inherent hazardous issue because of the pathogenic contamination of natural resources. Therefore, in this study, domestic sludge was treated with premontane forest soil, macronutrients, and also pasteurization to reduce the content of volatile solids and pathogens. The best biostabilization treatment using premontane forest soil and pasteurization obtained a volatile solids reduction of 87% according to the environmental regulations, in which a biosolid is stable in a range of 38% of volatile solids reduction. In less than 30 days in a mesophilic range, the coliform count was reduced up to 71% when using forest soil and pasteurization. Thus, a biosolid-class B was obtained using gravimetric means as a platform to promote fast quality control.
CORRESPONDING AUTHOR:
Paola Posligua   
Universidad de Las Americas (UDLA), Environmental Engineering, Engineering and Agrarian Sciences, 59302, Quito-Ecuador, Av de los Granados y Jose Queri, 59302 Quito, Ecuador