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Biodegradability enhancement of a leachate after biological lagooning using a solar driven photo-Fenton reaction, and further combination with an activated sludge biological process, at pre-industrial scale.
Water Res. 2013 Jun 15; 47(10):3543-57.WR

Abstract

This work proposes an integrated leachate treatment strategy, combining a solar photo-Fenton reaction, to enhance the biodegradability of the leachate from an aerated lagoon, with an activated sludge process, under aerobic and anoxic conditions, to achieve COD target values and nitrogen content according to the legislation. The efficiency and performance of the photo-Fenton reaction, concerning a sludge removal step after acidification, defining the optimum phototreatment time to reach a biodegradable wastewater that can be further oxidized in a biological reactor and, activation sludge biological process, defining the nitrification and denitrification reaction rates, alkalinity balance and methanol dose necessary as external carbon source, was evaluated in the integrated system at a scale close to industrial. The pre-industrial plant presents a photocatalytic system with 39.52 m(2) of compound parabolic collectors (CPCs) and 2 m(3) recirculation tank and, an activated sludge biological reactor with 3 m(3) capacity. Leachate biodegradability enhancement by means of a solar driven photo-Fenton process was evaluated using direct biodegradability tests, as Zahn-Wellens method, and indirect measure according to average oxidation state (AOS), low molecular carboxylic acids content (fast biodegradable character) and humic substances (recalcitrant character) concentration. Due to high variability of leachate composition, UV absorbance on-line measurement was established as a useful parameter for photo-Fenton reaction control.

Authors+Show Affiliations

LSRE - Laboratory of Separation and Reaction Engineering - Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23642652

Citation

Silva, Tânia F C V., et al. "Biodegradability Enhancement of a Leachate After Biological Lagooning Using a Solar Driven photo-Fenton Reaction, and Further Combination With an Activated Sludge Biological Process, at Pre-industrial Scale." Water Research, vol. 47, no. 10, 2013, pp. 3543-57.
Silva TF, Fonseca A, Saraiva I, et al. Biodegradability enhancement of a leachate after biological lagooning using a solar driven photo-Fenton reaction, and further combination with an activated sludge biological process, at pre-industrial scale. Water Res. 2013;47(10):3543-57.
Silva, T. F., Fonseca, A., Saraiva, I., Vilar, V. J., & Boaventura, R. A. (2013). Biodegradability enhancement of a leachate after biological lagooning using a solar driven photo-Fenton reaction, and further combination with an activated sludge biological process, at pre-industrial scale. Water Research, 47(10), 3543-57. https://doi.org/10.1016/j.watres.2013.04.008
Silva TF, et al. Biodegradability Enhancement of a Leachate After Biological Lagooning Using a Solar Driven photo-Fenton Reaction, and Further Combination With an Activated Sludge Biological Process, at Pre-industrial Scale. Water Res. 2013 Jun 15;47(10):3543-57. PubMed PMID: 23642652.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biodegradability enhancement of a leachate after biological lagooning using a solar driven photo-Fenton reaction, and further combination with an activated sludge biological process, at pre-industrial scale. AU - Silva,Tânia F C V, AU - Fonseca,Amélia, AU - Saraiva,Isabel, AU - Vilar,Vítor J P, AU - Boaventura,Rui A R, Y1 - 2013/04/16/ PY - 2013/01/10/received PY - 2013/03/16/revised PY - 2013/04/05/accepted PY - 2013/5/7/entrez PY - 2013/5/7/pubmed PY - 2013/12/29/medline SP - 3543 EP - 57 JF - Water research JO - Water Res VL - 47 IS - 10 N2 - This work proposes an integrated leachate treatment strategy, combining a solar photo-Fenton reaction, to enhance the biodegradability of the leachate from an aerated lagoon, with an activated sludge process, under aerobic and anoxic conditions, to achieve COD target values and nitrogen content according to the legislation. The efficiency and performance of the photo-Fenton reaction, concerning a sludge removal step after acidification, defining the optimum phototreatment time to reach a biodegradable wastewater that can be further oxidized in a biological reactor and, activation sludge biological process, defining the nitrification and denitrification reaction rates, alkalinity balance and methanol dose necessary as external carbon source, was evaluated in the integrated system at a scale close to industrial. The pre-industrial plant presents a photocatalytic system with 39.52 m(2) of compound parabolic collectors (CPCs) and 2 m(3) recirculation tank and, an activated sludge biological reactor with 3 m(3) capacity. Leachate biodegradability enhancement by means of a solar driven photo-Fenton process was evaluated using direct biodegradability tests, as Zahn-Wellens method, and indirect measure according to average oxidation state (AOS), low molecular carboxylic acids content (fast biodegradable character) and humic substances (recalcitrant character) concentration. Due to high variability of leachate composition, UV absorbance on-line measurement was established as a useful parameter for photo-Fenton reaction control. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/23642652/Biodegradability_enhancement_of_a_leachate_after_biological_lagooning_using_a_solar_driven_photo_Fenton_reaction_and_further_combination_with_an_activated_sludge_biological_process_at_pre_industrial_scale_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(13)00313-8 DB - PRIME DP - Unbound Medicine ER -