2026-05-05T21:52:13Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/406772021-05-21T21:24:18Zcom_10324_1173com_10324_931com_10324_894col_10324_1371
2020-03-17T19:11:25Z
urn:hdl:10324/40677
Traceability of organic contaminants in the sludge line of wastewater treatment plants: A comparison study among schemes incorporating thermal hydrolysis treatment and the conventional anaerobic digestion
Díaz Villalobos, Israel
Díaz Curbelo, Alina
Pérez Lemus, Nereida
Fernández-Polanco Fernández de Moreda, Fernando
Pérez Elvira, Sara Isabel
Producción Científica
The traceability of conventional pollutants and 10 organic microcontaminants in the sludge line of a wastewater treatment plant (WWTP) was evaluated. The application of thermal hydrolysis (TH) as pre-treatment to anaerobic digestion (AD) or as inter-treatment (between two AD stages) was considered and compared with the conventional digestion scheme. TH scenarios reduced the mass flow rate of biosolids (40–60%) as well as the ratio of solids (50–100%), organic matter (5–26%) and nitrogen (8–13%) destined to biosolids. Micropollutants showed a strong tendency to accumulate in the solid phase (more than 90% were sorbed) in spite of thermal and dewatering processes, but TH scenarios exhibited greater removal efficiency (80%) in comparison to conventional AD (50%), reducing the ratio of micropollutants destined to biosolids from a conventional 48% to 7–8%. These findings reveal that TH could increase the value of biosolids from sewage sludge treatment because of greater removal of pollutants and dewaterability.
2020-03-17T19:11:25Z
2020-03-17T19:11:25Z
2020
info:eu-repo/semantics/article
Bioresource Technology, Febrero 2020, 305, 123028
0960-8524
http://uvadoc.uva.es/handle/10324/40677
10.1016/j.biortech.2020.123028
123028
Bioresource Technology
305
spa
https://www.sciencedirect.com/science/article/pii/S0960852420302972
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Elsevier