Evaluación espacio–temporal de la calidad del agua del río Cutuchi en el cantón Latacunga, provincia de Cotopaxi, período 2019-2020.
This research determined the space-temporal variation of the water quality of the Cutuchi River, through the National Sanitation Foundation (NSF). For this, the hydrometeorological study was carried out: precipitation, temperature, and flow through five meteorological stations and one hydrological f...
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| Format: | bachelorThesis |
| Language: | spa |
| Published: |
2020
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| Online Access: | http://repositorio.utc.edu.ec/handle/27000/6796 |
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Add Tag | Summary: | This research determined the space-temporal variation of the water quality of the Cutuchi River, through the National Sanitation Foundation (NSF). For this, the hydrometeorological study was carried out: precipitation, temperature, and flow through five meteorological stations and one hydrological for the period 2005-2015. The period 2011-2015 was analyzed to apply the Water Quality Index (WQI), as well as samples carried out in the period September 2019- January 2020 of the parameters established in the WQI NSF OD%, fecal coliforms, pH, DBO5, SDT, 3−, 4−3 temperature and turbidity; to which the weighted geometric average equation was applied to obtain the sub-indices of each parameter whose values were multiplied by the weighting factors of each one of them, so it was obtained the established category of the water quality of the Cutuchi river. The results showed an average annual temperature of 13.7 ° C and precipitation of 634 mm/year; the distribution of precipitation showed the highest precipitation from 986.2 mm to 701.6 mm, followed by 657.6 mm. The average annual flow was 11.15 m3 / s, the flood period runs from February to July, and the low water level from July to January. The average of the NSF WQI for the hydrometric station (H0792) was 58.17 (regular), this has been maintained for five years, so there is no tendency to increase or decrease water quality. Parameters: Dissolved Oxygen (mg / L) in 2012 (4.46 mg / L) is below the LMP. While: in January 2020, the Fecal Coliforms have a value (350000 NMP / 100mL), and Phosphates (2249 ug / L). In October 2019 the Arsenic had (0.055 mg / L), and Turbidity (NTU), at 2012 presents (128 NTU), in October 2019 had (192 NTU), which exceeds the Maximum Permissible Limit established by the (TULSMA, BOOK VI ANNEX 1, 2015). According to the correlation between the value of the WQI and the flow rate in the period of analysis, there is a direct correlation; it means, as the flow rate increases, the quality increases too; however, in the sampling period, it lacks a correlation due to short studying time. |
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