Disposal of waste brine from desalination in Eutrophic Red Argisol and Fluvic Neosol in the western Potiguar region, Brazil

Our objective was to evaluate the physicochemical parameters of waste brine from reverse osmosis desalination plants and to evaluate the physicochemical parameters of soils where it is discharged in rural communities in the western Potiguar region of the state of Rio Grande do Norte, Brazil. Soil sa...

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Bibliographic Details
Published in:	Desalination and water treatment Vol. 195; pp. 213 - 221
Main Authors:	de Oliveira, André Moreira, da Silva Dias, Nildo, dos Santos Fernandes, Cleyton, Gurgel, Gabriela Cemirames, de Oliveira Miranda, Neyton, de Freitas, Jair José Rabelo, de Souza Lemos Neto, Hozano, da Silva, Claudio Ricardo, dos Santos, Moisés Medeiros, da Silva, Marcia Regina Farias, de Sousa Sá, Francisco Vanies, da Silva, Jucirema Ferreira
Format:	Journal Article
Language:	English
Published:	Elsevier Inc 01-08-2020
Subjects:	Reverse osmosis Soil salinization Wastewater Wastewater Soil salinization Reverse osmosis
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Summary:	Our objective was to evaluate the physicochemical parameters of waste brine from reverse osmosis desalination plants and to evaluate the physicochemical parameters of soils where it is discharged in rural communities in the western Potiguar region of the state of Rio Grande do Norte, Brazil. Soil samples of two types (Eutrophic Red Argisol and Fluvic Neosol) were collected in the dry and rainy seasons in two communities at two distances from the discharge point (1 and 2 m) and at the point itself, in two layers for each point (0–20 and 20–40 cm). In addition, samples of waste brine were taken from the desalination plants for the evaluation of the physicochemical quality and contamination risks. All brine samples were classified as C3 or C4, which is, extremely high risk of salinization, needing special practices for salinity control. The two soils that received the brine presented significant alterations of their attributes and quality throughout the periods. This was more pronounced in the dry season and the layers of soils with a greater amount of clay, which resulted in the soil receiving different classifications, which were influenced directly by the brine.
ISSN:	1944-3986 1944-3986
DOI:	10.5004/dwt.2020.25889