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Environmental Risk Assessment for the Disposal of Clandestine Solid Waste on the Riversides of the Opamayo and Sicra Rivers in Lircay-Huancavelica

Soto-Carbajal Demetrio, Portuguez-Maurtua Marcelo, Contreras-Lopez Eliana, Cruz-Quevedo Mariam De la, Chávez-Angulo Héctor Orlando, Llahuilla-Quea José Antonio

Ecological Engineering & Environmental Technology

2024

Vol. 25, iss. 2

157--167

Inadequate solid waste management causes risks to the environment. This is exacerbated when local governments fail to conduct a relevant environmental risk assessment. The objective of this research was to evaluate the environmental risks of clandestine solid waste disposal sites on the banks of the Sicra and Opamayo rivers in the district of Lircay in the department of Huancavelica, Peru. For the collection of spatial information, the location of clandestine dumps was identified. Seventeen points were mapped in the urban area of Lircay. The estimation of severity and environmental risks was carried out according to the UNE 150008:2008 standard and the Peruvian Environmental Risk Assessment Guide proposed by the Ministry of the Environment (MINAM). Environmental risk zoning maps were then generated. Finally, the result of the environmental risk focused on 4 points of clandestine dumps in medium environmental risk zones and 5 points of clandestine dumps in high environmental risk zones within these riverbanks.

Evaluation of the Concentration and Health Risks of Phosphates and Nitrates of a High Andean River

Sáez-Huamán Wilfredo, Contreras-Lopez Eliana, Portuguez-Maurtua Marcelo, Sánchez-Araujo Víctor, Palomino-Pastrana Pedro, Escobar-Soldevilla Mabel, Inostroza-Ruiz Luis Alberto, Llahuilla Quea Jose Antonio

Ecological Engineering & Environmental Technology

2023

Vol. 24, iss. 9

249--258

In developing countries, river monitoring is very limited. Despite environmental and health problems, there is a paucity of information regarding the contaminants phosphates and nitrates. Thus, concentration and health risks, of phosphates and nitrates of the Ichu river waters, in Huancavelica, Peru, were evaluated. Sampling was carried out at six different points. Important water quality parameters were analyzed, such as pH, temperature, dissolved oxygen (DO) and electric conductivity (EC). The results revealed that the phosphate and nitrate varied between 0.475 to 0.575 mg/L and 11.10 to 14.00 mg/L, respectively. The concentration of phosphates and nitrates was 0.520±0.02 mg/L and 13.10±0.48, respectively. The Ichu River water had the quality that corresponded to its category, when compared to the permitted limits of the Environmental Quality Standards (EQS) for water. It did not present contamination according to the nutrient contamination index and the health risk was from chronic low intake. Besides, it presented a moderate relationship between nitrate and phosphate, due to the low concentration of phosphates during the dry season. What is new about this research is the approach to potential health risks of exposure to nitrates and phosphates, in a high Andean river in Huancavelica, Peru.