<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282017000200287</article-id>
<article-id pub-id-type="doi">10.19136/era.a4n11.913</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Remoción de bacterias coliformes en un sistema de lodos activados y humedal construido]]></article-title>
<article-title xml:lang="en"><![CDATA[Coliform bacteria removal through a system of activated sludge and constructed Wetland]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Nava]]></surname>
<given-names><![CDATA[Hipólito]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baumann]]></surname>
<given-names><![CDATA[Jürgen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Tlaxcala Facultad de Agrobiología ]]></institution>
<addr-line><![CDATA[San Felipe Ixtacuixtla Tlaxcala]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,aff2  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>4</volume>
<numero>11</numero>
<fpage>287</fpage>
<lpage>297</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282017000200287&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282017000200287&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282017000200287&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN. El agua residual municipal contiene grandes cantidades de bacterias coliformes, que pueden ser un riesgo para la salud pública y la contaminación ambiental. El objetivo fue evaluar la remoción de coliformes cotales (CT), Escherichia coli (EC) y demanda química de oxígeno (DQO) del agua residual de un sistema a escala piloto con dos tratamientos: un reactor secuencial por lotes (RSL) de lodos activados y un humedal construido de flujo vertical (HCFV). Las concentraciones promedio de CT, EC y DQO en el efluente fueron 8.03X106, 4.13X106 NMP (100 mL)-1 y 528 mg L-1, respectivamente. Los Porcentajes de remoción (PR) promedio fueron de 99.84 % (4.52 unidades log), 99.92 % (4.92 unidades log) y 92.78 % para CT, EC y DQO, respectivamente. La remoción, obtenida con un tiempo de residencia aproximado de 11 h, cumple con la norma mexicana para reúso con contacto directo. El análisis de correlación mostró que la DQO es independiente de CT y EC. Las mediciones del efluente y concentraciones de CT y EC en la salida del HCFV muestran que entre las variables hay asociación. Las concentraciones de CT y EC del HCFV con respecto al tiempo estuvieron sesgadas a la izquierda, lo que concuerda con el comportamiento observado para medios porosos. Las comunidades pueden utilizar este sistema para reusar el agua residual tratada en el riego agrícola.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT. Municipal wastewater contains huge amounts of coliforms that represent a risk to public health and can pollute the environment. The goal of this study was to evaluate the removal of total coliforms (TC), Escherichia coli (EC), and chemical oxygen demand (COD) from wastewater by using a pilot system with sequencing batch reactor (SBR) activated sludge and vertical flow constructed wetland (VFCW). Average concentration of TC, EC and COD in the influent were 8.03X106, 4.13X106 NMP (100 mL)-1, and 528 mg L-1, respectively; the average removal percent (RP) were 99.84 % (4.52 log units), 99.92 % (4.92 log units), and 92.78 % for TC, EC, and COD, respectively. This removal, obtained with 11 h of time residence, meets with Mexican requirements for water reuse. Correlation analysis showed that the COD was not correlated with TC and EC. Measures flux effluent, and TC and EC concentrations from the outflow of VFCW show that these variables are related. Plots of TC and EC concentrations from VFCW versus time were skewed to the left; this result is similar as observed in porous medium. Therefore, communities can use this system to reuse treated wastewater in agriculture irrigation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Demanda química de oxígeno]]></kwd>
<kwd lng="es"><![CDATA[Escherichia coli]]></kwd>
<kwd lng="es"><![CDATA[humedal]]></kwd>
<kwd lng="es"><![CDATA[tasa de efluente]]></kwd>
<kwd lng="en"><![CDATA[Chemical oxygen demand]]></kwd>
<kwd lng="en"><![CDATA[Escherichia coli]]></kwd>
<kwd lng="en"><![CDATA[effluent flux]]></kwd>
<kwd lng="en"><![CDATA[wetland]]></kwd>
</kwd-group>
</article-meta>
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