{"id":9767,"date":"2025-11-24T14:36:51","date_gmt":"2025-11-24T14:36:51","guid":{"rendered":"https:\/\/www.stereau.com\/communiques\/stereau-and-enosis-partner-to-integrate-biological-methanation-into-the-wastewater-treatment-plants-of-tomorrow\/"},"modified":"2025-11-24T16:15:53","modified_gmt":"2025-11-24T16:15:53","slug":"stereau-and-enosis-partner-to-integrate-biological-methanation-into-the-wastewater-treatment-plants-of-tomorrow","status":"publish","type":"communiques","link":"https:\/\/www.stereau.com\/en\/press-releases\/stereau-and-enosis-partner-to-integrate-biological-methanation-into-the-wastewater-treatment-plants-of-tomorrow\/","title":{"rendered":"Stereau and Enosis partner to integrate biological methanation into the wastewater treatment plants of tomorrow."},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"9767\" class=\"elementor elementor-9767 elementor-9751\" data-elementor-post-type=\"communiques\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-143d5845 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"143d5845\" 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-3a89514\" data-id=\"3a89514\" 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-51f135c0 elementor-align-center elementor-widget elementor-widget-post-info\" data-id=\"51f135c0\" 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-d0dd295 elementor-inline-item\" itemprop=\"datePublished\">\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-date\">\n\t\t\t\t\t\t\t\t\t\t<time>24 November 2025<\/time>\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<div class=\"elementor-element elementor-element-3908dcd9 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"3908dcd9\" 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\">Stereau and Enosis partner to integrate biological methanation into the wastewater treatment plants of tomorrow.<\/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-7b06c15b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b06c15b\" 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-e5ca23e\" data-id=\"e5ca23e\" 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-f6634f7 elementor-widget__width-auto elementor-widget elementor-widget-text-editor\" data-id=\"f6634f7\" 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>Share:<\/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-6730a60f elementor-share-buttons--skin-minimal elementor-share-buttons--shape-circle elementor-share-buttons--color-custom elementor-widget__width-auto elementor-share-buttons--view-icon-text elementor-grid-0 elementor-widget elementor-widget-share-buttons\" data-id=\"6730a60f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"share-buttons.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-grid\" role=\"list\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_facebook\" role=\"button\" tabindex=\"0\" aria-label=\"Share on facebook\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-facebook\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_twitter\" role=\"button\" tabindex=\"0\" aria-label=\"Share on twitter\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-twitter\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_linkedin\" role=\"button\" tabindex=\"0\" aria-label=\"Share on linkedin\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-linkedin\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\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-445458c6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"445458c6\" 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-16 elementor-top-column elementor-element elementor-element-2f6dafa4\" data-id=\"2f6dafa4\" 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-66 elementor-top-column elementor-element elementor-element-4950446d\" data-id=\"4950446d\" 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-43aaed91 elementor-widget elementor-widget-text-editor\" data-id=\"43aaed91\" 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 style=\"text-align: center;\"><b>At the Salon des Maires et des Collectivit\u00e9s Locales (SMCL), Stereau \u2014 the engineering subsidiary of the Saur Group specializing in the design and construction of water treatment facilities \u2014 and Enosis, a French company recognized for its expertise in biological methanation, announced the signing of a strategic partnership to develop and deploy solutions in France and Switzerland for recovering CO\u2082 generated from sludge digestion in wastewater treatment plants. This partnership supports the evolution of tomorrow\u2019s wastewater treatment plant model, driven by Saur Group\u2019s Valoriise offering, and aims to help local authorities reduce the carbon footprint of their facilities through a solution that turns CO\u2082 from wastewater treatment into renewable energy. <\/b><\/p>\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-16 elementor-top-column elementor-element elementor-element-2e4c6aee\" data-id=\"2e4c6aee\" 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-33f5af47 bg_2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"33f5af47\" 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-396daad3\" data-id=\"396daad3\" 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-52f185e0 elementor-widget elementor-widget-text-editor\" data-id=\"52f185e0\" 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><strong>A semi-industrial-scale pilot unit<\/strong><\/p><p>As part of this partnership, Stereau and Enosis will deploy a next-generation pilot unit at a wastewater treatment plant. This installation will mark a key milestone: for the first time in France in this context, it will enable real-world testing of biological methanation applied to sludge from wastewater treatment.<\/p><p>These trials will complement those conducted by Enosis with its DENOBIO industrial demonstrator, which is coupled with an agricultural methanization facility and represents the first French biological methanation installation, commissioned in 2025 in the Hauts-de-France region.<\/p><p>At the end of this pilot phase, Stereau and Enosis plan to deploy a first commercial installation integrated into a municipal wastewater treatment plant. This step will make it possible to define a reproducible industrial model for CO\u2082 recovery and the local production of renewable energy within a wastewater treatment facility.<\/p><p><strong>A modular, proven technology adapted to urban constraints<\/strong><\/p><p>Conventional methanization produces a biogas composed of roughly 60% methane and 40% CO\u2082, of which only the methane portion can be recovered. The biological methanation developed by ENOSIS goes one step further: it combines this CO\u2082 with green hydrogen to produce additional methane.<\/p><p>This reaction, at the core of Power-to-Gas pathways, makes it possible to use hydrogen produced by electrolysis from green electricity to convert an unutilized CO\u2082 stream into renewable or low-carbon e-methane.<\/p><p>The biological methanation developed by Enosis increases renewable gas production by 30 to 50% while eliminating CO\u2082 emissions.<\/p><p>Available in modular, skid-mounted, or containerized formats, the Enosis technology fits seamlessly within the urban constraints of wastewater treatment plants.<br \/>It offers several advantages for local authorities:<br \/>\u2022 easy integration, even on constrained sites;<br \/>\u2022 small footprint, well suited to urban environments;<br \/>\u2022 robust operation despite variations in biogas quality;<br \/>\u2022 progressive scaling according to needs.<\/p><p><strong>A strong contribution to the ecological transition of wastewater treatment plants<\/strong><\/p><p>Recovering the biogenic CO\u2082 from wastewater treatment plants is a strategic lever for local authorities that, under the new European Urban Wastewater Treatment Directive (DERU), must strengthen the energy and climate performance of their facilities. The directive introduces stricter requirements for emissions reduction, energy efficiency, and the use of renewable energy within sanitation infrastructures.<br \/>By converting a gas that was previously released into renewable methane, biological methanation directly addresses these new obligations: it increases local green energy production, improves the carbon footprint of treatment plants, and contributes to achieving Europe\u2019s climate neutrality goals.<\/p><p><strong>Statements<\/strong><\/p><p><strong><em>Vincent Guerr\u00e9, President of Enosis:<\/em><\/strong><br \/>\u201cBy combining our solutions with Stereau\u2019s expertise in water treatment, we are taking a decisive step toward large-scale deployment of technologies that convert CO\u2082 into renewable or low-carbon e-methane. This is a key advancement for the energy transition of local communities.\u201d<\/p><p><em><strong>Hugo Bardi, President of Stereau:<\/strong><\/em><br \/>\u201cThis partnership with Enosis is fully aligned with our ambition to provide local authorities with concrete solutions to decarbonize their infrastructures. Biological methanation paves the way for a new generation of wastewater treatment plants that produce renewable energy.\u201d<\/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-1fc85f47 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"1fc85f47\" 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\/11\/fr_cp_partenariat_stereau_enosis_v.stereau-rev-enosis_stereau-en.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-file-pdf\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">DOWNLOAD THE PRESS RELEASE<\/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\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":9755,"template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"Stereau & Enosis: biological methanation for wastewater plants","_seopress_titles_desc":"Stereau and Enosis combine their expertise to integrate biological methanation into wastewater treatment plants and convert CO\u2082 into renewable 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