{"id":6590,"date":"2023-04-25T10:27:16","date_gmt":"2023-04-25T10:27:16","guid":{"rendered":"https:\/\/stereau.tpdev.net\/realisation\/acheres-seine-aval-yvelines\/"},"modified":"2025-07-04T16:22:43","modified_gmt":"2025-07-04T16:22:43","slug":"acheres-seine-aval-yvelines","status":"publish","type":"realisation","link":"https:\/\/www.stereau.com\/en\/our-achievements\/acheres-seine-aval-yvelines\/","title":{"rendered":"Ach\u00e8res Seine Aval (Yvelines)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6590\" class=\"elementor elementor-6590 elementor-4558\" data-elementor-post-type=\"realisation\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-73ba5356 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"73ba5356\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6c07c870\" data-id=\"6c07c870\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1822f321 elementor-align-center widget-post-info-realisation elementor-widget elementor-widget-post-info\" data-id=\"1822f321\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-d6e5750 elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<span class=\"elementor-post-info__terms-list-item\">Wastewater<\/span>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-ab363bb elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<span class=\"elementor-post-info__terms-list-item\"><\/span>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2befb7ec elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2befb7ec\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-39bf9c73\" data-id=\"39bf9c73\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-76c8a267 elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-mobile elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"76c8a267\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Ach\u00e8res Seine Aval (Yvelines)<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41182450 elementor-widget elementor-widget-heading\" data-id=\"41182450\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Ach\u00e8res Seine Aval: restoring the ecological state of the Seine<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2ac6270b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2ac6270b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-2e666388\" data-id=\"2e666388\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-1ee3c90d\" data-id=\"1ee3c90d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-55f3383 elementor-widget elementor-widget-text-editor\" data-id=\"55f3383\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In 2015, Stereau was declared the winning bidder of the tender launched by the Interdepartmental Syndicate for Sanitation of the Paris Metropolitan Area (SIAAP) for the design and construction of the primary sedimentation at the Seine Aval plant located in Ach\u00e8res (Yvelines), the second largest wastewater treatment plant in the world and the first in Europe. <br \/><span style=\"font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary ); background-color: var(--ast-global-color-5);\">This project,<\/span> <span style=\"font-size: 1rem; font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary ); background-color: var(--ast-global-color-5);\">which involves adding a new primary sedimentation stage between the pre-treatment and biological treatment, aims to restore the<\/span> <span style=\"font-size: 1rem; font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary ); background-color: var(--ast-global-color-5);\">environmental <br \/>quality of the Seine River downstream of Paris up to its estuary and thus limit the pollution <br \/>l oads carried into the English Channel.<\/span><span style=\"font-size: 1rem; font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary ); background-color: var(--ast-global-color-5);\"> <\/span><\/p>\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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-629a9656\" data-id=\"629a9656\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-16bbb9d3 bg_2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"16bbb9d3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-15d1a0da\" data-id=\"15d1a0da\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-47dc3f47 elementor-widget elementor-widget-image\" data-id=\"47dc3f47\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1013\" height=\"543\" src=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/05\/acheres_seine_aval.jpg\" class=\"attachment-large size-large wp-image-5975\" alt=\"Ach\u00e8res wastewater treatment plant (Siaap - Yvelines)\" srcset=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/05\/acheres_seine_aval.jpg 1013w, https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/05\/acheres_seine_aval-300x161.jpg 300w, https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/05\/acheres_seine_aval-768x412.jpg 768w, https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/05\/acheres_seine_aval-380x204.jpg 380w\" sizes=\"(max-width: 1013px) 100vw, 1013px\" \/>\t\t\t\t\t\t\t\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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7181df91\" data-id=\"7181df91\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-78f1f4b4 title_text elementor-widget elementor-widget-heading\" data-id=\"78f1f4b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The challenges<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-310484d9 elementor-widget elementor-widget-text-editor\" data-id=\"310484d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li>To contribute to restoring the ecological quality of the Seine River. <\/li>\n<li>The project consists of the construction of a pumping station consisting of 16 pumps with a capacity of 2.5 m3\/s, a unit of 14 screens followed by 20 lamellar settlers, operating with or without the addition of chemicals to treat a flow rate of 34 cubic meters per second. Treatment and pumping facilities complete the project.<\/li>\n<li>To limit the environmental footprint of the facility, the installation of an odor treatment process is implemented. <\/li>\n<\/ul>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-77a82561 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"77a82561\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2dd08b57\" data-id=\"2dd08b57\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7646db7b title_text elementor-widget elementor-widget-heading\" data-id=\"7646db7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Our solutions<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6af84bd2 elementor-widget elementor-widget-text-editor\" data-id=\"6af84bd2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"background-color: var(--ast-global-color-5);\">Within the scope of this contract, Stereau has implemented the services of:<\/span><br \/><br \/><span style=\"background-color: var(--ast-global-color-5);\">Pumping and screening: water intake from the existing pre-treatment, design and construction of an emergency overflow structure at 34 m<sup>3<\/sup>\/s, installation of 16 pumps with a total capacity of 34 m<sup>3<\/sup>\/s, 14 bar screens, 6 mm screening (stair-type), and compaction treatment of rejects.<\/span><\/p><p><span style=\"background-color: var(--ast-global-color-5);\">Primary sedimentation: installation of lamellar primary settlers, injection of coagulant and flocculant as needed, integrated sludge thickening, pumping of sludge up to 40 g\/l over a distance of 1,000 meters.\u00a0<\/span><\/p><p><span style=\"font-style: inherit; font-weight: inherit; color: var(--ast-global-color-3); background-color: var(--ast-global-color-5);\">To avoid any nuisance, the structures are covered and connected to a biological deodorization system using Stereau&#8217;s patented process,\u00a0<\/span> <span style=\"font-style: inherit; font-weight: inherit; color: var(--ast-global-color-3); background-color: var(--ast-global-color-5);\">Lanodor\u00ae, with a flow rate of 240,000 m<sup>3<\/sup>\/h.<\/span><br \/><br \/><br \/>The heating of all buildings is achieved through the heat contained in wastewater\u00a0<span style=\"font-style: inherit; font-weight: inherit; background-color: var(--ast-global-color-5); color: var(--ast-global-color-3);\">using heat pumps.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f3a6e94 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"6f3a6e94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2025\/07\/anglais-stereau_lanodor_2023.pdf\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-arrow-right\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">MORE ABOUT THE LANODOR\u00ae PROCESS<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2dcab430\" data-id=\"2dcab430\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5bf825e1 title_text elementor-widget elementor-widget-heading\" data-id=\"5bf825e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Benefits<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51adb9c7 elementor-widget elementor-widget-text-editor\" data-id=\"51adb9c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li>Improvement in the capacity and quality of wastewater treatment, including during rainy weather<\/li>\n<li>Enhancement of the living environment for residents through the reduction of olfactory nuisances<\/li>\n<li>Greater protection of the waters of the Seine River<\/li>\n<\/ul>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e0b62f1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e0b62f1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-3fd07f92\" data-id=\"3fd07f92\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1aa86891 elementor-widget elementor-widget-heading\" data-id=\"1aa86891\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">1,700,000<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44fe0307 elementor-widget elementor-widget-heading\" data-id=\"44fe0307\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">m<sup>3<\/sup>\/day dry weather capacity<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-e5d50ad\" data-id=\"e5d50ad\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-60604ef5 elementor-widget elementor-widget-heading\" data-id=\"60604ef5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">70 %<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b44a224 elementor-widget elementor-widget-heading\" data-id=\"2b44a224\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">of wastewater from the Greater Paris area <\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-51764974\" data-id=\"51764974\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5775182f elementor-widget elementor-widget-heading\" data-id=\"5775182f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">30<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-691b1181 elementor-widget elementor-widget-heading\" data-id=\"691b1181\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">m<sup>3<\/sup>\/s settling flow<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6ecdb1fe elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ecdb1fe\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-47442273\" data-id=\"47442273\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-57ba037f elementor-widget elementor-widget-heading\" data-id=\"57ba037f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Other achievements<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-51315430 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"51315430\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-494da884\" data-id=\"494da884\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-39da01e9 elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-widget elementor-widget-plus\" data-id=\"39da01e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;columns&quot;:&quot;3&quot;,&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]},&quot;row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"plus.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-classic elementor-grid elementor-has-item-ratio\">\n\t\t\t\t\t\t<article class=\"elementor-post elementor-grid-item post-8900 realisation type-realisation status-publish has-post-thumbnail hentry categorie-sludge-recovery categorie-wastewater perimetre_geographique-south-west\" data-lang= \"en\">\n\n\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.stereau.com\/en\/our-achievements\/castres-tarn\/\">\n\t\t\t\t\t\t\t<div class=\"_elementor-post__thumbnail wc_thumbnail\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"2560\" height=\"1707\" src=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-scaled.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"transition hydrique Stereau\" srcset=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-scaled.jpg 2560w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-300x200.jpg 300w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-1024x683.jpg 1024w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-768x512.jpg 768w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-1536x1024.jpg 1536w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-2048x1365.jpg 2048w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/ville-de-castres-380x253.jpg 380w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t \n\t\t\t\t\t<div class=\"_elementor-post__text\">\n\t\t\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>Sludge recovery, Wastewater<\/span><span class=\"separateur\">|<\/span><span class=\"perimetre\">South West<\/span>\n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.stereau.com\/en\/our-achievements\/castres-tarn\/\">Castres (Tarn)<\/a>\n\t\t\t\t\t\t \n\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"post-btns\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\n\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t<article class=\"elementor-post elementor-grid-item post-8849 realisation type-realisation status-publish has-post-thumbnail hentry categorie-wastewater perimetre_geographique-center-east perimetre_geographique-switzerland\" data-lang= \"en\">\n\n\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.stereau.com\/en\/our-achievements\/aubenas-ardeche-2\/\">\n\t\t\t\t\t\t\t<div class=\"_elementor-post__thumbnail wc_thumbnail\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"477\" src=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/villette-step-travaux.jpeg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Station d &#039;\u00e9puration de Villette - Annemasse - Stereau Suisse traitement des micrtopolluants dans les eaux us\u00e9es - projet transforontalier eaux us\u00e9es Frac\" srcset=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/villette-step-travaux.jpeg 800w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/villette-step-travaux-300x179.jpeg 300w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/villette-step-travaux-768x458.jpeg 768w, https:\/\/www.stereau.com\/wp-content\/uploads\/2024\/11\/villette-step-travaux-380x227.jpeg 380w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t \n\t\t\t\t\t<div class=\"_elementor-post__text\">\n\t\t\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>Wastewater<\/span><span class=\"separateur\">|<\/span><span class=\"perimetre\">Center East, Switzerland<\/span>\n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.stereau.com\/en\/our-achievements\/aubenas-ardeche-2\/\">Villette-Annemasse (Switzerland)<\/a>\n\t\t\t\t\t\t \n\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"post-btns\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\n\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t<article class=\"elementor-post elementor-grid-item post-6219 realisation type-realisation status-publish has-post-thumbnail hentry categorie-sludge-recovery categorie-wastewater perimetre_geographique-center-east\" data-lang= \"en\">\n\n\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.stereau.com\/en\/our-achievements\/aubenas-ardeche\/\">\n\t\t\t\t\t\t\t<div class=\"_elementor-post__thumbnail wc_thumbnail\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"608\" src=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/03\/Aubenas.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Bourdary wastewater treatment plant - Aubenas (Ard\u00e8che). Biogas production from wastewater - Stereau\" srcset=\"https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/03\/Aubenas.jpg 1200w, https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/03\/Aubenas-300x152.jpg 300w, https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/03\/Aubenas-1024x519.jpg 1024w, https:\/\/www.stereau.com\/wp-content\/uploads\/2023\/03\/Aubenas-768x389.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t \n\t\t\t\t\t<div class=\"_elementor-post__text\">\n\t\t\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>Sludge recovery, Wastewater<\/span><span class=\"separateur\">|<\/span><span class=\"perimetre\">Center East<\/span>\n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.stereau.com\/en\/our-achievements\/aubenas-ardeche\/\">Aubenas (Ard\u00e8che)<\/a>\n\t\t\t\t\t\t \n\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"post-btns\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\n\t\t\t\t<\/article>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-10ef9f8c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"10ef9f8c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4e8e8b78\" data-id=\"4e8e8b78\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Ach\u00e8res Seine Aval: restoring the ecological state of the Seine In 2015, Stereau was declared the winning bidder of the tender launched by the Interdepartmental Syndicate for Sanitation of the Paris Metropolitan Area (SIAAP) for the design and construction of the primary sedimentation at the Seine Aval plant located in Ach\u00e8res (Yvelines), the second largest [&hellip;]<\/p>\n","protected":false},"featured_media":5975,"template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"Ach\u00e8res: the world&#039;s second-largest wastewater treatment plant","_seopress_titles_desc":"The new Primary Settling unit is part of the overall project to overhaul and modernize the Seine Aval wastewater treatment plant in Ach\u00e8res.","_seopress_robots_index":"","inline_featured_image":false,"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"categorie":[63],"perimetre_geographique":[58],"class_list":["post-6590","realisation","type-realisation","status-publish","has-post-thumbnail","hentry","categorie-wastewater","perimetre_geographique-northern-france-and-paris-region"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/realisation\/6590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/realisation"}],"about":[{"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/types\/realisation"}],"version-history":[{"count":19,"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/realisation\/6590\/revisions"}],"predecessor-version":[{"id":9534,"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/realisation\/6590\/revisions\/9534"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/media\/5975"}],"wp:attachment":[{"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/media?parent=6590"}],"wp:term":[{"taxonomy":"categorie","embeddable":true,"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/categorie?post=6590"},{"taxonomy":"perimetre_geographique","embeddable":true,"href":"https:\/\/www.stereau.com\/en\/wp-json\/wp\/v2\/perimetre_geographique?post=6590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}