Impact of a WWTP effluent overland flow on the properties of a mediterranean riparian soil.

Autor: Escarmena L; Department of Evolutive Biology, Ecology and Environmental Sciences, University of Barcelona, 08028, Barcelona, Spain. Electronic address: lescarmena@ub.edu., Roca N; Department of Evolutive Biology, Ecology and Environmental Sciences, University of Barcelona, 08028, Barcelona, Spain. Electronic address: nroca@ub.edu., Riera JL; Department of Evolutive Biology, Ecology and Environmental Sciences, University of Barcelona, 08028, Barcelona, Spain. Electronic address: jlriera@ub.edu., Sauras-Yera T; Department of Evolutive Biology, Ecology and Environmental Sciences, University of Barcelona, 08028, Barcelona, Spain. Electronic address: msauras@ub.edu., Sabaté S; Department of Evolutive Biology, Ecology and Environmental Sciences, University of Barcelona, 08028, Barcelona, Spain; CREAF, Spain. Electronic address: santi.sabate@ub.edu., Sabater F; Department of Evolutive Biology, Ecology and Environmental Sciences, University of Barcelona, 08028, Barcelona, Spain; CREAF, Spain. Electronic address: fsabater@ub.edu.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2024 Aug; Vol. 366, pp. 121778. Date of Electronic Publication: 2024 Jul 08.
DOI: 10.1016/j.jenvman.2024.121778
Abstrakt: In this work we aim to assess the impact of a WWTP effluent overland flow on properties and nutrient concentrations of a riparian soil, in order to explore the potential of this practice as a nature-based treatment. We set two study zones of 150 m 2 on the field, one control and one that received the WWTP effluent on its surface for one month. Samples were taken before and after the effluent overland flow system, to test the impact of the effluent on soil properties through a BACI design, and after 17 months, to evaluate the recovery of the soil. Two depths were studied: 0-5 cm and 5-20 cm. The effluent overland flow triggered an increase in exchangeable sodium percentage and a decrease in nitrate concentration in both depths, and an increase in ammonium concentration in 0-5 cm depth. After 17 months, there were not found relevant differences among zones. In conclusion, this practice could be used in the purpose to reduce the nutrient concentrations of WWTP effluents. This practice could be relevant for regions where WWTP effluents are discharged in low-flow or intermittent streams, such as semi-arid regions or the Mediterranean region.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE