Affiliation:
1. Industrial and Chemical Processes Group, School of Engineering, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia
2. Environmental School, School of Engineering, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia
3. School of Engineering, University of Medellín, Carrera 87 No 30-65, Medellín 050026, Colombia
Abstract
This research aims to propose management strategies to mitigate eutrophication caused by inefficient wastewater treatment plants in Colombia. The information analyzed was provided by environmental authorities such as IDEAM, CORANTIOQUIA, and CORNARE in Antioquia, where the average concentrations of phosphorus in wastewater from municipal, livestock, and industrial activities are 5.1, 30.6, and 29.1 mg P/L. The total nitrogen concentrations are 77, 143, and 121 mg N/L, respectively, surpassing the limit concentrations stated by the European Union, the United States, and Mexico, among others, while Colombia has not established its own limits. Including limitations for nutrient concentrations will align Colombia with the 2050 Sustainable Development Goals (SDGs), where microalgae species like Chlorella or Scenedesmus could be used in wastewater treatment systems for municipalities and industries. These microalgae can capture organic matter, nutrients, and greenhouse emissions and reduce the concentrations observed in natural water. They could also be an alternative for capturing heavy metals and some pollutants of emerging concern. In addition to the ecological and social benefits, the algal biomass could be valorized by transforming it into biological products such as fuels, fertilizers, and pigments when micropollutants are not present, reducing operational costs for treatment systems.
Funder
Minciencias (Colombia) and Universidad de Antioquia
Reference62 articles.
1. Source identification of surface water pollution using multivariate statistics combined with physicochemical and socioeconomic parameters;Zhang;Sci. Total. Environ.,2022
2. World Bank Group (2024, July 07). Colombia un Cambio de Rumbo, Seguridad Hidrica para la Recuperación y Crecimiento Sostenible. Available online: www.worldbank.org.
3. Environmental Protection Agency (2024, July 07). A Compilation of Cost Data Associated with the Impacts and Control of Nutrient Pollution Cost of Nutrient Pollution, Available online: https://www.epa.gov/nutrient-policy-data/compilation-cost-data-associated-impacts-and-control-nutrient-pollution.
4. Municipal wastewater treatment technologies: A review;Sikosana;Procedia Manuf.,2019
5. Integrating microalgae tertiary treatment into activated sludge systems for energy and nutrients recovery from wastewater;Arias;Bioresour. Technol.,2017