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Ver términos de la licenciaDomínguez-Montero, Lilian Edith, et al. (2024). Regulaciones para la descarga de aguas residuales de México: comparación con otros países y su cumplimiento en plantas de tratamiento seleccionadas. Revista Internacional de Contaminación Ambiental; Vol. 40, 2024; 289-311. Recuperado de https://repositorio.unam.mx/contenidos/4161087
Autor(es)
Domínguez-Montero, Lilian Edith; Poggi-Varaldo, Héctor Mario; Cañizares-Villanueva, Rosa Olivia; Padilla Viveros, América Alejandra; Rinderknecht-Seijas, Noemi; Caffarel-Méndez, Sergio; de la Cruz-Burelo, Eduard
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Regulaciones para la descarga de aguas residuales de México: comparación con otros países y su cumplimiento en plantas de tratamiento seleccionadas
Fecha
2024-11-21
Resumen
The purpose of this study was: i) to describe and compare the 1996 and 2021 official mexican standards for wastewater discharge (actual standard-NA and new standard-NN, as per the abbreviation in Spanish); ii) to compare the two official mexican standards for wastewater discharge with the regulations of Brazil, the United States, Canada and the European Union (UE), as well as to determine the environmental permissiveness index of basic pollutants and the subset of heavy metals and cyanides (also called ‘other pollutants’); and iii) to analyze the compliance with the Mexican NN and NA of 25 municipal wastewater treatment plants that operate in a metropolitan area of Mexico. The results suggest that the new NOM 2021 is very close to the previous 1996 norm in terms of permissiveness, and in turn both are much more permissive compared to those of the developed countries of the United States-Mexico-Canada Agreement (USMCA) and the UE. The high permissible maximum levels of most pollutants in both Mexican standards could cause negative impacts on water bodies and national assets. The updating and expansion of NOM 002 and 003 is recommended, and eventually the revision of NOM 001 2021 itself is also recommended to eliminate or reduce the risk to health and the environment of water contaminants and upgrade the quality of the water resource in the context of the member countries of the USMCA.
Tema
international comparison; maximum permitted level; heavy metals; Official Mexican Standards; comparación internacional; límite máximo permisible; metales pesados; normas oficiales mexicanas
Idioma
spa
ISSN
ISSN impreso: 0188-4999
