Carbon redirection in chemically enhanced primary treatment of domestic wastewater: A meta-analysis of laboratory to full-scale trials.

Autor: Tondera K; Université Claude Bernard Lyon 1, LEHNA UMR 5023, CNRS, ENTPE, F-69518, Vaulx-en-Velin, France; Université de Lyon, INSA-Lyon, Laboratoire DEEP EA7429, 9 rue de la Physique, 69621 Villeurbanne, France. Electronic address: katharina.tondera@entpe.fr., Gillot S; INRAE, REVERSAAL, F-69625, Villeurbanne, France., Chazarenc F; INRAE, REVERSAAL, F-69625, Villeurbanne, France.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Mar; Vol. 351, pp. 141161. Date of Electronic Publication: 2024 Jan 11.
DOI: 10.1016/j.chemosphere.2024.141161
Abstrakt: Increasing energy demands combined with local scarcities and rising prices make the valorisation of energy from domestic wastewater seen as a valuable resource. Chemically enhanced primary treatment (CEPT) enables an increased redirection of organic compounds into sludge in the primary stage of a wastewater treatment for a transformation into biogas (carbon capture). Traditionally used coagulants consist of metallic salts, but in the last two decades, the development of polymers, based on petroleum or synthesized from renewable sources such as plants, has been intensified. However, a direct comparison of the effectiveness of these products is missing. In this paper, we analysed data of peer-reviewed research from jar tests to full-scale studies, highlighting key parameters for successful carbon capture. More than 100 studies were identified, with a majority presenting results from tests under static conditions (jar tests), while data on full-scale applications are scarce. Overall, for TSS and COD, a clear correlation between inflow concentration and removal efficiency was found, irrespective of the product used. Comparison between the effectiveness of the different types of products is difficult, but bio-based coagulants need to be generally added in higher product concentrations for a considerable removal efficiency. While CEPT seems to increase the general sludge and biogas output, future studies should focus on harmonising laboratory analysis to make results comparable. Another important issue that should be addressed is the provision of experimental details, especially for full-scale trials, to enable for reliable conclusions.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Florent Chazarenc reports financial support was provided by Rhone Mediterranee Corsica Region Water Agency. Katharina Tondera reports a relationship with EUR H2O'Lyon that includes: funding grants.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: