Ingeniería e Investigación · 2005 · 10 citations · 0 references
EngineeringEnvironmental EngineeringSoil SciencesSolid Waste ManagementWaste ManagementWastewater TreatmentCompost ManagementComposting SystemsSludge ManagementSludge Resource RecoverySludge TreatmentWaste TreatmentCompostingComposting ProcessesSewage Sludge CompostingSludge CompostingSugarcane BagasseThermophilic CulturesTurningWastewater Treatment Plants
Aerobic composting employing manual turning was evaluated by using the sludge produced by EMCALI EICE ESP’s Cañaveralejo wastewater treatment plant (PTAR-C). Compost (in 1,0 ton piles) consisted of sludge, a fixed proportion of bulking agent (10%) and amendment material. Sugarcane waste and solid organic (marketplace) waste were evaluated as amendment material using 20/80 and 40/60 weight/weight (amendment/sludge) ratios. Incorporating the amendment material improved the compost, being reflected in a faster start for the thermophilic phase, higher temperatures being maintained (>55°C) and better C/N ratio obtained in the compost in all treatments compared to the pile which had no amendment added to it. Incorporating the bulking agent improved sludge manageability during composting; the best combination was 54% sludge + 10% sugarcane bagasse + 36% liquid sugarcane waste.