<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532021000400028</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v88n219.91441</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Analysis of the goodness of fit of the San model for the calculation of the removal percentage of flocculent particles with low initial turbidity values in the problem water]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis de la bondad de ajuste del modelo de San para el cálculo del porcentaje de remoción de partículas floculentas con valores bajos de turbiedad inicial en el agua problema]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pulgarín-Montoya]]></surname>
<given-names><![CDATA[Diego Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De Plaza-S.]]></surname>
<given-names><![CDATA[Juan Sebastián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruge-C.]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rocha de Albuquerque]]></surname>
<given-names><![CDATA[Paulo José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Católica de Colombia Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Bogotá D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Estadual de Campinas Departamento de Geotecnia e Transportes ]]></institution>
<addr-line><![CDATA[Campinas ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>88</volume>
<numero>219</numero>
<fpage>28</fpage>
<lpage>34</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532021000400028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532021000400028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532021000400028&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this study, the degree of goodness of fit presented by the San model is determined to calculate the percentage of removal of flocculent particles, when the initial turbidity in the problem water is low. For this, the frequency analysis of the historical turbidity data that enters four drinking water treatment plants located in the department of Cundinamarca (Colombia) is made, which show values that range between 0.60 and 15.08 NTU (Nephelometric Turbidity Units). The water coagulation was done using type A aluminum sulfate and the sedimentation test was carried out in a sedimentation tower in order to determine the remaining turbidity in the water, which allows calculating the percentage of removal for different sedimentation times and at different depths. The values of the constants of the San model were determined through a multiple linear regression and the goodness of fit test was performed by calculating the coefficient of determination R2 for the different initial turbidity values in the test water.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este estudio se determina el grado de bondad de ajuste que presenta el modelo de San para el cálculo del porcentaje de remoción de partículas floculentas, cuando la turbiedad inicial en el agua problema es baja. Para esto, se hace el análisis de frecuencia de los datos históricos de turbiedad que ingresan a cuatro plantas de tratamiento de agua potable ubicadas en el departamento de Cundinamarca (Colombia), las cuales arrojan valores que oscilan entre 0.60 y 15.08 UNT (Unidades Nefelométricas de Turbidez). La coagulación del agua se hizo utilizando sulfato de aluminio tipo A y la prueba de sedimentación se realizó en una torre de sedimentación con el fin de determinar la turbiedad remanente en el agua que permite calcular el porcentaje de remoción para diferentes tiempos de sedimentación y a distintas profundidades.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[coagulation]]></kwd>
<kwd lng="en"><![CDATA[flocculation]]></kwd>
<kwd lng="en"><![CDATA[sedimentation]]></kwd>
<kwd lng="en"><![CDATA[isoconcentration curves]]></kwd>
<kwd lng="es"><![CDATA[coagulación]]></kwd>
<kwd lng="es"><![CDATA[floculación]]></kwd>
<kwd lng="es"><![CDATA[sedimentación]]></kwd>
<kwd lng="es"><![CDATA[curvas de isoconcentración]]></kwd>
</kwd-group>
</article-meta>
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