<?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>0123-4226</journal-id>
<journal-title><![CDATA[Revista U.D.C.A Actualidad & Divulgación Científica]]></journal-title>
<abbrev-journal-title><![CDATA[rev.udcaactual.divulg.cient.]]></abbrev-journal-title>
<issn>0123-4226</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Aplicadas y Ambientales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-42262012000100009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[POTENCIAL DE REUTILIZACIÓN DEL EFLUENTE DE LA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES DE NÁTAGA EN CULTIVO DE CACAO (Theobroma cacao L.)]]></article-title>
<article-title xml:lang="en"><![CDATA[POTENTIAL REUSE OF EFFLUENT FROM THE NÁTAGA MUNICIPALITY WASTEWATER TREATMENT PLANT FOR THE CROP OF COCOA (Theobroma cocoa L.)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfredo Aragón]]></surname>
<given-names><![CDATA[Renso]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[Jonathan]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Surcolombiana Departamento de Ingeniería Agrícola ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Surcolombiana Grupo de Investigación Agroindustria USCO ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,Centro de Investigación en Ciencias y Recursos GeoAgroAmbientales - CENIGAA  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2012</year>
</pub-date>
<volume>15</volume>
<numero>1</numero>
<fpage>77</fpage>
<lpage>86</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-42262012000100009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-42262012000100009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-42262012000100009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El trabajo consistió en determinar el potencial de reutilización del efluente de la Planta de Tratamiento de Aguas Residuales (PTAR) del municipio Nátaga, departamento Huila, Colombia, con fines de irrigación para un cultivo de cacao (Theobroma cacao L.). Este efluente es vertido a la Quebrada El Pueblo, creando problemas de contaminación y de riesgos de salud pública. Aplicando vigilancia tecnológica, se elaboró el estado del arte y recolección de información, para caracterizar el efluente y evaluar la PTAR; se calculó el balance hídrico del cultivo y los beneficios potenciales de la reutilización en riego de estas aguas residuales. El efluente de la PTAR pertenece a la clase C2S1 (CE = 0,54 dS/m, RAS = 1,5), con peligro de salinización medio y de alcalinización bajo para agua de riego; por su riesgo microbiológico es categoría B (CF = 105 NMP/100mL, HH = 21 HH/L), exigiendo adecuado manejo del riego, que minimice los riesgos de salud pública. La zona de influencia tiene déficit hídrico durante todo el año y el efluente constituye un recurso potencial para el cultivo de cacao, aportando en promedio 223.720 m³/año de agua, macronutrientes N (7.273kg/año), P (839kg/año), K (2.797kg/año) y lodos (958 kg/año de materia seca); con el efluente en verano, se puede regar en promedio 19ha de cacao y, en invierno, 27ha. Se recomienda el riego del cacao con el efluente de la PTAR, pero se debe tener cuidado con los efectos sobre el suelo, la planta y la salud pública.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The project consisted in the determination of the potential reuse of the effluent from the Nátaga municipality Wastewater Treatment Plant (WWTP) for irrigation purpose in cocoa cultivations (Theobroma cacao L.). The effluent is discharged to the "El Pueblo" river, generating pollution problems and public health risks. By means of technological surveillance, the state of art was elaborated and the information, in order to characterize and evaluate the WWTP effluent, collected. The crops water balance and the potential benefits of reuse in irrigation of wastewater was calculated. The effluent from the WWTP belongs to the C2S1 class (EC = 0.54 dS m-1, SAR = 1.5) with a medium risk of salinization and a low risk of alkalinization for water use in irrigation. The microbiological risk assessment is considered in category B (CF = 105 MPN/100 mL, HH = 21 HH/L), demanding an adequate irrigation management to minimize public health risks. The area of influence has a water deficit throughout the year and the effluent is a potential resource for the cultivation of cacao, providing an 223,720 m³ year-1 average of water, macronutrients N (7273 kg year-1), P (839 kg year-1) , K (2,797 kg year-1) and sludge (958 kg year-1 of dry matter). The average effluent for irrigation purpose in the dry season can be for 19ha and 27ha in the rainy season. It is recommended to irrigate cocoa cultures with the effluent from the WWTP, being careful with the effects on soil, plant and public health.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[reutilización de agua]]></kwd>
<kwd lng="es"><![CDATA[riego]]></kwd>
<kwd lng="es"><![CDATA[cacao]]></kwd>
<kwd lng="en"><![CDATA[Wastewater]]></kwd>
<kwd lng="en"><![CDATA[water reuse]]></kwd>
<kwd lng="en"><![CDATA[irrigation]]></kwd>
<kwd lng="en"><![CDATA[cocoa]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  ]]></body><back>
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