{"id":14569,"date":"2024-07-29T10:58:12","date_gmt":"2024-07-29T13:58:12","guid":{"rendered":"https:\/\/grupoep.com.br\/arena-y-guijarros\/"},"modified":"2026-10-27T09:58:22","modified_gmt":"2026-10-27T12:58:22","slug":"arena-y-guijarros","status":"publish","type":"page","link":"https:\/\/grupoep.com.br\/es\/productos\/elementos-filtrantes\/arena-y-guijarros\/","title":{"rendered":"Arena y guijarros"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"14569\" class=\"elementor elementor-14569 elementor-3361\" wpc-filter-elementor-widget=\"1\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62c5dba e-flex e-con-boxed e-con e-parent\" data-id=\"62c5dba\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1b4166f e-con-full e-flex e-con e-child\" data-id=\"1b4166f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4822293 elementor-widget elementor-widget-heading\" data-id=\"4822293\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Arena y guijarros para la filtraci\u00f3n de agua y efluentes<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-743a2ae e-flex e-con-boxed e-con e-parent\" data-id=\"743a2ae\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-b5bc7fe e-con-full e-flex e-con e-child\" data-id=\"b5bc7fe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-67bfe92 elementor-widget elementor-widget-text-editor\" data-id=\"67bfe92\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"\">La eficiencia de cualquier sistema de filtraci\u00f3n industrial o municipal empieza por elegir bien el lecho filtrante.<\/span><span class=\"\"> La <\/span><b class=\"\" data-path-to-node=\"4\" data-index-in-node=\"120\">arena y el guijarro<\/b> que suministra el Grupo EP son materiales de alta pureza, esenciales para construir los filtros que se usan en las plantas de tratamiento de agua (ETA) y en las plantas de tratamiento de efluentes (ETE), lo que garantiza que el efluente final est\u00e9 limpio, sea seguro y cumpla con los par\u00e1metros exigidos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eaa5300 elementor-widget elementor-widget-heading\" data-id=\"eaa5300\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00bfQu\u00e9 son y c\u00f3mo funcionan en el tratamiento del agua?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac9077d elementor-widget elementor-widget-text-editor\" data-id=\"ac9077d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En un sistema de filtraci\u00f3n convencional, el agua o el efluente pasa por diferentes capas de materiales. Juntos, la arena y los guijarros forman lo que llamamos lecho filtrante doble o multicapa, que funciona en sinergia para retener las impurezas. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c30b5a0 elementor-align-center elementor-widget__width-inherit animated-slow elementor-widget-laptop__width-initial elementor-invisible elementor-widget elementor-widget-button\" data-id=\"c30b5a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;slideInUp&quot;,&quot;_animation_delay&quot;:5}\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/grupoep.com.br\/es\/presupuesto\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Pide un presupuesto con nosotros<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a1d9f31 e-con-full e-flex e-con e-child\" data-id=\"a1d9f31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e2ab381 elementor-skin-carousel elementor-arrows-yes elementor-widget elementor-widget-media-carousel\" data-id=\"e2ab381\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;slides_per_view&quot;:&quot;1&quot;,&quot;skin&quot;:&quot;carousel&quot;,&quot;effect&quot;:&quot;slide&quot;,&quot;show_arrows&quot;:&quot;yes&quot;,&quot;speed&quot;:500,&quot;autoplay&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;loop&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;space_between&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;space_between_widescreen&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;space_between_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;space_between_tablet_extra&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;space_between_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;space_between_mobile_extra&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;space_between_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]}}\" data-widget_type=\"media-carousel.default\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-main-swiper swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Slides\">\n\t\t\t\t<div class=\"swiper-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-carousel-image\" role=\"img\" aria-label=\"Arena y guijarros\" style=\"background-image: url(&#039;https:\/\/grupoep.com.br\/wp-content\/uploads\/2024\/07\/areia-1.jpg&#039;)\">\n\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-carousel-image\" role=\"img\" aria-label=\"Arena y guijarros\" style=\"background-image: url(&#039;https:\/\/grupoep.com.br\/wp-content\/uploads\/2024\/07\/seixo-1.jpg&#039;)\">\n\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\" aria-label=\"Anterior\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 708 779 692 767L438 487 692 225C700 217 708 204 708 187 708 171 704 154 692 142 675 129 663 125 646 125Z\"><\/path><\/svg>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-next\" role=\"button\" tabindex=\"0\" aria-label=\"Siguiente\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-right\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M696 533C708 521 713 504 713 487 713 471 708 454 696 446L400 146C388 133 375 125 354 125 338 125 325 129 313 142 300 154 292 171 292 187 292 204 296 221 308 233L563 492 304 771C292 783 288 800 288 817 288 833 296 850 308 863 321 871 338 875 354 875 371 875 388 867 400 854L696 533Z\"><\/path><\/svg>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-708b7224 e-flex e-con-boxed e-con e-parent\" data-id=\"708b7224\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-237800f9 e-con-full e-flex e-con e-child\" data-id=\"237800f9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-1d0f64a e-con-full e-flex e-con e-child\" data-id=\"1d0f64a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0ee33c8 elementor-widget elementor-widget-heading\" data-id=\"0ee33c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Principales aplicaciones en plantas depuradoras y plantas de tratamiento de agua<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d38b51d elementor-widget elementor-widget-text-editor\" data-id=\"d38b51d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-path-to-node=\"13\">Nuestros elementos filtrantes se utilizan ampliamente en diversos equipos e instalaciones de tratamiento. Son la base de funcionamiento de tu <a href=\"https:\/\/grupoep.com.br\/es\/productos\/equipos\/filtro-de-arena\/\">filtro de arena<\/a> y son ideales para: <\/p><ul data-path-to-node=\"14\"><li><p data-path-to-node=\"14,0,0\">Tratamiento de agua potable e industrial.<\/p><\/li><li><p data-path-to-node=\"14,1,0\">Filtraci\u00f3n de efluentes sanitarios e industriales tras un tratamiento biol\u00f3gico o f\u00edsico-qu\u00edmico.<\/p><\/li><li><p data-path-to-node=\"14,2,0\">Sistemas de pretratamiento para membranas de filtraci\u00f3n.<\/p><\/li><li><p data-path-to-node=\"14,3,0\">Filtraci\u00f3n en procesos de reutilizaci\u00f3n del agua.<\/p><\/li><li>Mantener los est\u00e1ndares de calidad para <a href=\"https:\/\/www.gov.br\/saude\/pt-br\/centrais-de-conteudo\/publicacoes\/guias-e-manuais\/2024\/guia-para-implementacao-da-norma-de-qualidade-da-agua-para-consumo-humano.pdf\" target=\"_blank\" rel=\"noopener\">el tratamiento del agua potable.<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b408745 elementor-widget elementor-widget-heading\" data-id=\"b408745\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00bfPor qu\u00e9 elegir los elementos filtrantes del Grupo EP?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d864297 elementor-widget elementor-widget-text-editor\" data-id=\"d864297\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"\">Con a\u00f1os de experiencia en ingenier\u00eda y soluciones medioambientales,<\/span> el Grupo EP sabe que cada planta tiene unas necesidades espec\u00edficas. Suministramos arena y guijarros procesados,<span class=\"\"> lavados y clasificados en distintos rangos granulom\u00e9tricos para adaptarnos exactamente al dise\u00f1o de tu equipo,<\/span><span class=\"\"> lo que garantiza una mayor vida \u00fatil del lecho y una menor necesidad de mantenimiento correctivo.<\/span> <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-58581640 e-con-full e-flex e-con e-child\" data-id=\"58581640\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2fba825e e-con-full e-flex e-con e-child\" data-id=\"2fba825e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-68744c90 e-con-full e-flex e-con e-child\" data-id=\"68744c90\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24726fe1 elementor-widget__width-inherit elementor-widget elementor-widget-heading\" data-id=\"24726fe1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/grupoep.com.br\/es\/presupuesto\/\">\u00bfBuscas la soluci\u00f3n ideal?<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-32d10f e-con-full e-flex e-con e-child\" data-id=\"32d10f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2046c732 elementor-widget__width-inherit elementor-widget elementor-widget-heading\" data-id=\"2046c732\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/grupoep.com.br\/es\/presupuesto\/\">\u00a1Habla con nuestros expertos!<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47b61c56 elementor-button-align-end elementor-widget elementor-widget-form\" data-id=\"47b61c56\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Siguiente&quot;,&quot;step_previous_label&quot;:&quot;Anterior&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" id=\"formorcamento\" name=\"Presupuesto\" aria-label=\"Presupuesto\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"14569\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"47b61c56\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Grupo EP\" \/>\n\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tNombre\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Nombre\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-field_18c9187 elementor-col-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_18c9187\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tTel\u00e9fono\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[field_18c9187]\" id=\"form-field-field_18c9187\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Tel\u00e9fono\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email elementor-col-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tCorreo\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Correo\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-field_552ef3b elementor-col-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_552ef3b\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tEmpresa\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[field_552ef3b]\" id=\"form-field-field_552ef3b\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Empresa\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tMensaje\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Escribe aqu\u00ed tu mensaje\" required=\"required\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-acceptance elementor-field-group elementor-column elementor-field-group-field_8b748bf elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_8b748bf\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tPol\u00edtica de privacidad\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-subgroup\">\n\t\t\t<span class=\"elementor-field-option\">\n\t\t\t\t<input type=\"checkbox\" name=\"form_fields[field_8b748bf]\" id=\"form-field-field_8b748bf\" class=\"elementor-field elementor-size-sm  elementor-acceptance-field\" required=\"required\">\n\t\t\t\t<label for=\"form-field-field_8b748bf\">He le\u00eddo y conozco las condiciones de tratamiento de mis datos personales y doy mi consentimiento, cuando proceda, tal y como se describe en <a href=\"https:\/\/grupoep.com.br\/es\/politicas\/\" 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La arena y el guijarro que suministra el Grupo EP son materiales de alta pureza, esenciales para construir los filtros que se usan en las plantas de tratamiento [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":17204,"parent":14619,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-14569","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Arena y guijarros - Grupo EP<\/title>\n<meta name=\"description\" content=\"La arena y los guijarros son materiales esenciales que se usan en los sistemas de filtraci\u00f3n de agua. 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