Title:
Sewage Sludge Solar Drying and Gasification at Pilot Scale for CHP
Author(s):
Pérez, V., Peña, D., Borjabad, E., García, S., Esteban, L.S., Ramos, R.
Document(s):
Paper
Slide presentation
Abstract:
LIFE-DRY4GAS is a demonstrative project that proposes an environmentally sustainable technology solution for the management of sewage sludge generated in a Waste Water Treatment Plant (WWTP). A prototype integrated by a solar dryer, a gasification plant, a gas burner and an Organic Rankine Cycle will be developed and demonstrated in a WWTP. This work aims at the study of solar drying and gasification of sewage sludge at a pilot plant scale in CEDER-CIEMAT’s facilities in Soria (Spain). During the drying test, 8170 kg of sewage sludge with a moisture content of 80% were dried up to 12%, consuming a specific energy of 6474 kJ/kg of evaporated water. 95% of the whole amount of energy came from renewable energy sources (solar and hot air from a biomass burner). Ambient conditions were unfavorable for the drying test: temperature of 4.9ºC and ambient air humidity of 72.4%, but results were satisfactory. The gas produced during the gasification test had a composition of 5.1-6.2% H2, 6.3-7.5% CO and 2.4-3.1% CH4, with a low heating value of 2.5-2.9 MJ/Nm3. The content of total tars of the gas was 5.4-6.4 g/Nm3.
Keywords:
CHP, drying, gasification, sewage sludge, wastewater treatment
Topic:
Biomass Technologies and Conversion for Bioenergy
Subtopic:
Gasification for power, CHP and polygeneration
Event:
28th European Biomass Conference and Exhibition
Session:
2BO.2.4
Pages:
295 - 300
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-2BO.2.4
Price:
FREE
