{"id":1000008675,"date":"2022-12-01T14:32:43","date_gmt":"2022-12-01T13:32:43","guid":{"rendered":"https:\/\/forum-engagement.org\/?p=1000008675"},"modified":"2022-12-01T14:32:43","modified_gmt":"2022-12-01T13:32:43","slug":"eau-utiliser-les-ressources-de-maniere-raisonnee","status":"publish","type":"post","link":"https:\/\/forum-engagement.org\/2024\/eau-utiliser-les-ressources-de-maniere-raisonnee\/","title":{"rendered":"Eau : utiliser les ressources de mani\u00e8re raisonn\u00e9e"},"content":{"rendered":"\n<p>La production d\u2019acier n\u00e9cessite d\u2019importantes quantit\u00e9s d\u2019eau, qui peut \u00eatre, selon les sites, pr\u00e9lev\u00e9e sur les r\u00e9seaux ou dans la nature ou collect\u00e9e sur les sites (eau de pluie), et qui est ensuite trait\u00e9e et r\u00e9utilis\u00e9e ou rejet\u00e9e.<\/p>\n\n\n\n<p>Le recyclage de l\u2019eau ou le fonctionnement en circuit ferm\u00e9, utilis\u00e9s par certains sites fran\u00e7ais d\u2019ArcelorMittal, permettent de limiter les pr\u00e9l\u00e8vements et la consommation nette. En 2021, ArcelorMittal consommait 1,86 m\u00e8tre cube d\u2019eau par tonne d\u2019acier produit, en baisse sur 5 ans.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment l\u2019eau est utilis\u00e9e sur les sites<\/h2>\n\n\n\n<p>Dans les sites industriels d\u2019ArcelorMittal, l\u2019eau est utilis\u00e9e comme eau de refroidissement, pour les processus industriels, ou encore dans des applications environnementales.<\/p>\n\n\n\n<p>L\u2019eau de refroidissement sert \u00e0 abaisser la temp\u00e9rature des installations, qui sont expos\u00e9es \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es pendant les phases de production&nbsp;: moteurs des usines d\u2019agglom\u00e9ration, hottes des hauts-fourneaux, convertisseurs, cages de laminage des trains \u00e0 chaud\u2026<\/p>\n\n\n\n<p>L\u2019utilisation de l\u2019eau peut aussi \u00eatre li\u00e9e aux processus industriels proprement dits et servir par exemple \u00e0 \u00e9teindre le coke \u00e0 la sortie de la cokerie, \u00e0 granuler les laitiers de haut-fourneau avant valorisation ou \u00e0 \u00e9liminer la fine couche d\u2019oxyde sur les brames dans le laminoir \u00e0 chaud (d\u00e9calaminer). Elle peut aussi \u00eatre utilis\u00e9e sous forme de vapeur.<\/p>\n\n\n\n<p>Enfin, l\u2019eau est utilis\u00e9e sur les sites d\u2019ArcelorMittal pour des applications environnementales, notamment pour lutter contre les envols de poussi\u00e8res par l\u2019aspersion des pistes, des routes et des stocks de mati\u00e8res premi\u00e8res, mais aussi pour le lavage des gaz de hauts-fourneaux et d\u2019aci\u00e9rie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Traitement de l\u2019eau<\/h2>\n\n\n\n<p>Diff\u00e9rentes m\u00e9thodes sont utilis\u00e9es pour limiter l\u2019impact de l\u2019activit\u00e9 sur l\u2019eau, notamment en termes de mati\u00e8res en suspension&nbsp;: collecte des eaux de ruissellement, traitement des produits chimiques, graisses et solvants utilis\u00e9s lors de la fabrication de l\u2019acier\u2026 Les plus grands sites industriels d\u2019ArcelorMittal en France disposent de leurs propres installations de traitement de l\u2019eau, g\u00e9r\u00e9es par des entreprises sp\u00e9cialis\u00e9es, pour ma\u00eetriser la qualit\u00e9 de l\u2019eau rejet\u00e9e et en assurer la conformit\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La production d\u2019acier n\u00e9cessite d\u2019importantes quantit\u00e9s d\u2019eau, qui peut \u00eatre, selon les sites, pr\u00e9lev\u00e9e sur les r\u00e9seaux ou dans la nature ou collect\u00e9e sur les sites (eau de pluie), et qui est ensuite trait\u00e9e et r\u00e9utilis\u00e9e ou rejet\u00e9e. Le recyclage de l\u2019eau ou le fonctionnement en circuit ferm\u00e9, utilis\u00e9s par certains sites fran\u00e7ais d\u2019ArcelorMittal, permettent [&hellip;]<\/p>\n","protected":false},"author":76,"featured_media":1000008676,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155],"tags":[],"class_list":{"0":"post-1000008675","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-engagements-pour-une-strategie-ecologique-performante"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Eau : utiliser les ressources de mani\u00e8re raisonn\u00e9e | Forum Engagement<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eau : utiliser les ressources de mani\u00e8re raisonn\u00e9e | Forum Engagement\" \/>\n<meta property=\"og:description\" content=\"La production d\u2019acier n\u00e9cessite d\u2019importantes quantit\u00e9s d\u2019eau, qui peut \u00eatre, selon les sites, pr\u00e9lev\u00e9e sur les r\u00e9seaux ou dans la nature ou collect\u00e9e sur les sites (eau de pluie), et qui est ensuite trait\u00e9e et r\u00e9utilis\u00e9e ou rejet\u00e9e. 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