<?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>0121-750X</journal-id>
<journal-title><![CDATA[Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[ing.]]></abbrev-journal-title>
<issn>0121-750X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-750X2022000300301</article-id>
<article-id pub-id-type="doi">10.14483/23448393.17945</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Alternativas para tratar lodos originados en sistemas de tratamiento de aguas residuales: una revisión]]></article-title>
<article-title xml:lang="en"><![CDATA[Alternatives to Treat Sludge from Sewage Treatment Plants: A Review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cárdenas Torrado]]></surname>
<given-names><![CDATA[Geraldine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina Pérez]]></surname>
<given-names><![CDATA[Francisco José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>27</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-750X2022000300301&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-750X2022000300301&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-750X2022000300301&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  La investigación han demostrado la eficiencia de diversos tratamientos para lodos. Sin embargo, se han presentado nuevas alternativas que ameritan una revisión actualizada. Es por ello que este trabajo tiene como objetivo realizar dicha actualización con respecto a técnicas convencionales y nuevas para tratar los lodos.  Método:  Este artículo está basado en una revisión de documentos en diversas bases de datos, agrupando en primera instancia las alternativas convencionales y posteriormente las nuevas, constituidas ambas por alternativas de técnicas de espesamiento, estabilización y deshidratación de lodos, y analizándolas con base en criterios económicos, técnicos y ambientales.  Resultados:  En este estudio se encontró que la ósmosis directa es una de las alternativas más prometedoras en el espesamiento de lodos, la oxidación de agua supercrítica y la pirólisis en la estabilización y la filtración al vacío en la deshidratación de dichos subproductos.  Conclusiones:  Este artículo permitió la revisión actualizada de alternativas convencionales y nuevas para el tratamiento de lodos, observando que, tanto en el espesamiento como en la estabilización, las nuevas alternativas tienen eficiencias altas, mientras la filtración al vacío, una alternativa convencional, mejoró su rendimiento mediante el uso del floculante modificado, destacándose en la deshidratación de lodos. Es por ello que se requieren más investigaciones que mejoren los desafíos y rendimientos presentes e indaguen sobre la liberación al ambiente de contaminantes al utilizar los biosólidos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Context: Research has shown the efficiency of various treatments for sludge. However, new alternatives have been presented which merit an updated review. That is why this work aims to carry out said update with regard to conventional and new techniques to treat sludge.  Method: The article is based on a review of documents in various databases, first grouping the conventional alternatives and later the new ones, both consisting of alternatives of sludge thickening, stabilization, and dewatering techniques, and analyzing them based on economic, technical, and environmental criteria.  Results: This study found that direct osmosis is one of the most promising alternatives in sludge thickening, supercritical water oxidation, and pyrolysis in stabilization and vacuum filtration during the dehydration of said byproducts.  Conclusions: This article allowed an updated review of conventional and new alternatives for sludge treatment, observing that, both in thickening and stabilization, the new alternatives are highly efficient, whereas vacuum filtration, a conventional alternative, improved its performance through the use of modified flocculants, standing out in the dehydration of sludge. This is why more research is required which improve the current challenges and yields and inquire into the release of pollutants into the environment when using biosolids.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[alternativas convencionales]]></kwd>
<kwd lng="es"><![CDATA[deshidratación]]></kwd>
<kwd lng="es"><![CDATA[espesamiento]]></kwd>
<kwd lng="es"><![CDATA[estabilización]]></kwd>
<kwd lng="es"><![CDATA[nuevas alternativas]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de lodos.]]></kwd>
<kwd lng="en"><![CDATA[conventional alternatives]]></kwd>
<kwd lng="en"><![CDATA[dehydration]]></kwd>
<kwd lng="en"><![CDATA[thickening]]></kwd>
<kwd lng="en"><![CDATA[stabilization]]></kwd>
<kwd lng="en"><![CDATA[new alternatives]]></kwd>
<kwd lng="en"><![CDATA[sludge treatment.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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