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Article

Modeling Biological Oxygen Demand Load Capacity in a Data-Scarce Basin with Important Anthropogenic Interventions

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Centro de Ciencias Ambientales EULA-Chile, Departamento de Ingeniería Ambiental, Facultad de Ciencias Ambientales, Universidad de Concepción, Concepción 4070386, Chile
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Centro de Ciencias Ambientales EULA-Chile, Departamento de Planificación Territorial, Facultad de Ciencias Ambientales, Universidad de Concepción, Concepción 4070386, Chile
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Centro de Ciencias Ambientales EULA-Chile, Departamento de Sistemas Acuáticos, Facultad de Ciencias Ambientales, Universidad de Concepción, Concepción 4070386, Chile
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Laboratorio de Limnología y Recursos Hídricos, Departamento de Ciencias Ambientales, Universidad Católica de Temuco, Temuco 4813302, Chile
*
Authors to whom correspondence should be addressed.
Academic Editor: Luca Giovanni Lanza
Water 2021, 13(17), 2379; https://doi.org/10.3390/w13172379
Received: 6 July 2021 / Revised: 13 August 2021 / Accepted: 25 August 2021 / Published: 30 August 2021
(This article belongs to the Section Ecohydrology)
Most water bodies are currently used as receptors for pollutants coming mainly from the industrial and domestic sectors. The Biobío river is subjected to multiple anthropogenic pressures such as industrial water supply, drinking water, hydroelectric power generation, agriculture, and the final receptor body of a large amount of industrial and urban waste, pressures that will intensify due to the decrease in water flow as a result of climate change. In this context, organic contamination has been found mainly from sewage discharges and oxidizable waste discharges generated by industrial processes. In this sense, the objective of this research is to determine the Biological Oxygen Demand Loading Capacity (LC) in a basin with a low density of water quality data subjected to strong anthropogenic pressures. To estimate the carrying capacity in a section of the Biobío River, the water quality model River and Stream Water Quality Model- Qual2K version 2.11b8, developed by Chapra, was used. This model solves the Streeter–Phelps equation, proposing an analytical expression to relate the dissolved oxygen (DO) and biochemical oxygen demand (BOD5) variables. These variables were modeled for different critical scenarios of minimum flows in return periods of 5, 50, and 100 years, determining that the studied section of the Biobío river would have a high carrying capacity to not be affected by its organic matter pollution. View Full-Text
Keywords: Biobío river; load capacity; water quality; Qual2K Biobío river; load capacity; water quality; Qual2K
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MDPI and ACS Style

Zurita, A.; Aguayo, M.; Arriagada, P.; Figueroa, R.; Díaz, M.E.; Stehr, A. Modeling Biological Oxygen Demand Load Capacity in a Data-Scarce Basin with Important Anthropogenic Interventions. Water 2021, 13, 2379. https://doi.org/10.3390/w13172379

AMA Style

Zurita A, Aguayo M, Arriagada P, Figueroa R, Díaz ME, Stehr A. Modeling Biological Oxygen Demand Load Capacity in a Data-Scarce Basin with Important Anthropogenic Interventions. Water. 2021; 13(17):2379. https://doi.org/10.3390/w13172379

Chicago/Turabian Style

Zurita, Alejandra, Mauricio Aguayo, Pedro Arriagada, Ricardo Figueroa, María E. Díaz, and Alejandra Stehr. 2021. "Modeling Biological Oxygen Demand Load Capacity in a Data-Scarce Basin with Important Anthropogenic Interventions" Water 13, no. 17: 2379. https://doi.org/10.3390/w13172379

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