Optimization of the Acid Stage of a Two-Stage Anaerobic Digestion Process to Treat Urban Wastewater Sludge
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10045/74457
Title: | Optimization of the Acid Stage of a Two-Stage Anaerobic Digestion Process to Treat Urban Wastewater Sludge |
---|---|
Authors: | Martín-Pascual, Jaime | Rueda-Pérez, Juan José | Jover-Smet, Margarita | Hontoria, Ernesto | Poyatos, José Manuel |
Research Group/s: | Ingeniería Hidráulica y Ambiental (IngHA) | Tecnología de Materiales y Territorio (TECMATER) |
Center, Department or Service: | Universidad de Alicante. Departamento de Ingeniería Civil |
Keywords: | Two stages | Anaerobic digestion | Methane production | Urban sludge |
Knowledge Area: | Ingeniería Hidráulica |
Issue Date: | Sep-2017 |
Publisher: | American Society of Civil Engineers |
Citation: | Journal of Environmental Engineering. 2017, 143(9). doi:10.1061/(ASCE)EE.1943-7870.0001237 |
Abstract: | The efficiency of a two-stage mesophilic anaerobic sludge digestion process was studied in comparison with a conventional process to treat urban sludge in relation to the hydraulic retention time (HRT) of the acid stage. This comparison, performed to optimize methane production in relation to the acid stage, was carried out in a pilot plant operating a two-stage process in parallel with conventional anaerobic digestion. The conditions of the conventional process were 22 days of HRT at 33.6°C; while the methanogenic stage was not changed (HRT 8.5 days at 33.5°C), the HRT of the acid stage ranged from 1.6±0.3 days to 3.2±0.6 days under a constant temperature of approximately 21.5°C. The results showed that the total anaerobic digestion process HRT can be reduced by at least 10.8 days using the two-stage technology without reducing the quality of the sludge effluent, operating at a HRT minimum of 1.6 days. Moreover, in the two-stage process, the optimum acid stage HRT to maximize methane production is 2.18 days. |
Sponsor: | The research was supported by Emasagra Company. |
URI: | http://hdl.handle.net/10045/74457 |
ISSN: | 0733-9372 (Print) | 1943-7870 (Online) |
DOI: | 10.1061/(ASCE)EE.1943-7870.0001237 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2017 American Society of Civil Engineers |
Peer Review: | si |
Publisher version: | https://doi.org/10.1061/(ASCE)EE.1943-7870.0001237 |
Appears in Collections: | INV - IngHA - Artículos de Revistas INV - TECMATER - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2017_Martin-Pascual_etal_JEnvironEng_final.pdf | Versión final (acceso restringido) | 3,08 MB | Adobe PDF | Open Request a copy |
Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.