Determination of the degree of contamination from domestic sewage andindustrial wastewater in the Quero river micro-watershed, Quero canton.
DOI:
https://doi.org/10.59410/PREPRINT-UEA-vAMB2324ep22-144Keywords:
pollution, sewage, industrial waters, physicochemical parameters, heavy metalAbstract
The objective of the present study was to determine the degree of contamination by sewage and industrial wastewater discharged into the Quero River in the Quero canton. For this purpose, a descriptive and deductive methodology was used. Water samples were collected over a period of 4 weeks and in triplicate at three points: before, at the point where the contaminated waters enter the river, and after entry. The physicochemical analysis included measurements of pH, electrical conductivity, dissolved oxygen, temperature, turbidity, BOD, COD, total solids, heavy metals, and the biological analysis corresponded to the presence of total and fecal coliforms. The results obtained indicate that, when comparing the flow rate with the volume of the inlet and outlet cross section, there is a natural sedimentation process of materials. This process can alter the shape and size of the material over time. Similarly, significant variations were determined in the physicochemical parameters in the area where the study was conducted, related to the contaminated effluents. A marked influence of sewage and industrial wastewater was observed on the concentration of heavy metals, especially at the second sampling point, where the highest levels were recorded. Finally, the presence of total coliforms in all samples indicates significant microbiological contamination. These findings underscore the urgency of implementing effective measures to control and mitigate the pollution of the Quero River. Furthermore, it is important to promote awareness of the impact of water pollution on the aquatic ecosystem.
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