<?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>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222020000200158</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2020-02-04</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diseño gráfico para la materia orgánica y el tiempo de retención en lagunas facultativas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés-Martínez]]></surname>
<given-names><![CDATA[Facundo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Treviño-Cansino]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcorta García]]></surname>
<given-names><![CDATA[María Aracelia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozoya Vélez]]></surname>
<given-names><![CDATA[Julio Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Ingeniería, Ciencias y Arquitectura ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Ingeniería, Ciencias y Arquitectura ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Nuevo León  ]]></institution>
<addr-line><![CDATA[San Nicolás de los Garza Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Ingeniería, Ciencias y Arquitectura ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>2</numero>
<fpage>158</fpage>
<lpage>189</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222020000200158&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222020000200158&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222020000200158&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El presente trabajo proporciona dos gráficas con base en el diseño tradicional de una laguna facultativa. En la primera se establece un factor para el cálculo del tiempo de retención; en la segunda se determina la demanda bioquímica de oxígeno en el efluente del sistema, lo anterior con el fin de simplificar el diseño. Se aplicó el criterio del método gráfico, luego los valores obtenidos fueron verificados con los de la metodología tradicional. Se comprobó la simplificación en el dimensionamiento de una laguna facultativa. Es importante indicar que el presente estudio considera únicamente el análisis de la materia orgánica para el dimensionamiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The present paper provides two graphs based in the traditional design of a facultative pond. The first one establish a factor for the calculation of the retention time; the second one determines the biochemical oxygen demand in the effluent of the pond, the aforementioned in order to simplify the design. The graphic method was applied, later the data obtained were compared with the traditional method. It was demonstrated the simplification in the design of a facultative pond. It is important to mention that the present paper only considers the organic matter for the design.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[laguna facultativa]]></kwd>
<kwd lng="es"><![CDATA[tiempo de retención]]></kwd>
<kwd lng="es"><![CDATA[demanda bioquímica de oxígeno]]></kwd>
<kwd lng="es"><![CDATA[diseño gráfico]]></kwd>
<kwd lng="en"><![CDATA[Facultative lagoon]]></kwd>
<kwd lng="en"><![CDATA[retention time]]></kwd>
<kwd lng="en"><![CDATA[biochemical oxygen demand]]></kwd>
<kwd lng="en"><![CDATA[graphic design]]></kwd>
</kwd-group>
</article-meta>
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