<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2518-4431</journal-id>
<journal-title><![CDATA[Investigación & Desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Inv. y Des.]]></abbrev-journal-title>
<issn>2518-4431</issn>
<publisher>
<publisher-name><![CDATA[UNIVERSIDAD PRIVADA BOLIVIANA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2518-44312024000100035</article-id>
<article-id pub-id-type="doi">10.23881/idupbo.024.1-3i</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[EVALUACIÓN DE CALIDAD DE AGUA RESIDUAL TRATADA PARA RIEGO EN EL VALLE ALTO DE LA CIUDAD DE COCHABAMBA]]></article-title>
<article-title xml:lang="en"><![CDATA[EVALUATION OF THE QUALITY OF WASTEWATER TREATED FOR IRRIGATION IN THE VALLE ALTO OF THE CITY OF COCHABAMBA]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Echeverría]]></surname>
<given-names><![CDATA[Ivette]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aliaga]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saavedra]]></surname>
<given-names><![CDATA[Oliver]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Privada Boliviana Centro de Investigaciones en Ingeniería Civil y Ambiental (CIICA) ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fundación Aguatuya  ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>24</volume>
<numero>1</numero>
<fpage>35</fpage>
<lpage>45</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S2518-44312024000100035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S2518-44312024000100035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S2518-44312024000100035&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El presente estudio se enfoca en analizar la calidad fisicoquímica de los efluentes generados por un grupo de Plantas de Tratamiento de Aguas Residuales (PTAR) situadas en el Valle Alto de Cochabamba para determinar su aptitud de reúso agrícola. Los principales parámetros analizados fueron (SO4)-2, (Cl)-1, (Na)+1, (Ca)+2, (Mg)+2, (HCO3)-1 y (NO3)-1 . Además, se estimaron los índices relación de adsorción de sodio (RAS) y porcentaje de sodio intercambiable (PSI). En los efluentes evaluados se encontraron las siguientes concentraciones: 132,00 - 252,00 mg/L de (SO4)-2; 3,02 - 9,48 meq/L de (Cl)-1; 11,79 - 17,59 meq/L de (Na)+1; 40,00 - 100,00 mg/L de (Ca)+2; 75,39 - 92,42 mg/L de (Mg)+2; 153,72 - 473,36 mg/L de (HCO&#8323;)-1; y 17,80 - 37,80 mg/L de (NO&#8323;)-1. Las estimaciones del RAS de los efluentes presentaron valores comprendidos entre 5,41 y 8,01. Los resultados de PSI estuvieron comprendidos entre 6,29-9,55. Debido a sus concentraciones moderadas y en base a la clasificación de los efluentes como C3-S2 según la clasificación RIVERSIDE, los efluentes podrían emplearse para el riego de suelos que tengan un drenaje adecuado. Debido a que ninguna de las plantas de tratamiento realiza procesos de desinfección se recomienda limitar la aplicación de los efluentes a cultivos que no se consuman sin procesar, de tallo alto, forrajeros y de moderada tolerancia a la salinidad. Se recomienda además la aplicación de técnicas de riego que alternen el riego con aguas residuales y otras fuentes de suministro de agua para reducir los riesgos asociados a la salinidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The present study focuses on analyzing the physicochemical quality of the effluents generated by a group of Wastewater Treatment Plants (WWTPs) located in the Valle Alto of Cochabamba to determine their suitability for agricultural reuse. The main parameters analyzed were (SO4)-2, (Cl)-1, (Na)+1, (Ca)+2, (Mg)+2, (HCO3)-1 y (NO3)-1. Additionally, the Sodium Adsorption Ratio (SAR) and exchangeable sodium percentage (PSI) were estimated. The evaluated effluents showed the following concentrations: 132.00 - 252.00 mg/L of (SO4)-2; 3.02 - 9.48 meq/L of (Cl)-1; 11.79 - 17.59 meq/L of (Na)+1; 40.00 - 100.00 mg/L of (Ca)+2; 75.39 - 92.42 mg/L of (Mg)+2; 153.72 - 473.36 mg/L of (HCO3)-1; and 17.80 - 37.80 mg/L of (NO3)-1. The SAR values of the effluents ranged from 5.41 to 8.01. On the other hand, the PSI values ranged from 6.29 to 9.55. Due to their moderate concentrations and based on the classification of the effluents as C3-S2 according to the Riverside classification, the effluents could be used for irrigating soils with adequate drainage. Since none of the treatment plants perform disinfection processes, it is recommended to limit the application of the effluents to crops that are not consumed raw, tall-stem, forage crops, and those with moderate salt tolerance. It is also recommended to apply irrigation techniques that alternate the use of wastewater with other water supply sources to reduce the risks associated with salinity.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Aguas Residuales]]></kwd>
<kwd lng="es"><![CDATA[Calidad del Efluente]]></kwd>
<kwd lng="es"><![CDATA[Riego]]></kwd>
<kwd lng="es"><![CDATA[RAS]]></kwd>
<kwd lng="es"><![CDATA[PSI]]></kwd>
<kwd lng="en"><![CDATA[Wastewater]]></kwd>
<kwd lng="en"><![CDATA[Effluent Quality]]></kwd>
<kwd lng="en"><![CDATA[Irrigation]]></kwd>
<kwd lng="en"><![CDATA[SAR]]></kwd>
<kwd lng="en"><![CDATA[PSI]]></kwd>
</kwd-group>
</article-meta>
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