{"id":32923,"date":"2026-06-14T08:52:00","date_gmt":"2026-06-14T06:52:00","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=32923"},"modified":"2026-06-15T07:33:33","modified_gmt":"2026-06-15T05:33:33","slug":"en-catalogne-des-usines-de-dessalinisation-pour-faire-face-a-la-secheresse","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2026\/06\/14\/en-catalogne-des-usines-de-dessalinisation-pour-faire-face-a-la-secheresse\/","title":{"rendered":"En Catalogne, des usines de dessalinisation pour faire face \u00e0 la s\u00e8cheresse"},"content":{"rendered":"<div class=\"paragraph\">\n<p>Deux cents millions de litres d\u2019eau par jour. C\u2019est la capacit\u00e9 de production de l\u2019usine de dessalement du Llobergat, \u00e0 Barcelone. G\u00e9r\u00e9e par l\u2019entreprise publique Ens d\u2019Abastament d\u2019Aigua Ter-Llobregat. L\u2019usine permet de diversifier les sources d\u2019approvisionnement en eau, notamment en p\u00e9riode de s\u00e9cheresse. <i>\u00ab<\/i><i>\u00a0<\/i><i>Lors de la s\u00e9cheresse de 2021-2025, l\u2019utilisation de l\u2019eau superficielle est pass\u00e9e de 44 \u00e0 19% tandis que celle de l\u2019eau dessal\u00e9e est pass\u00e9e 14 \u00e0 23% \u00bb<\/i>, d\u00e9taille Manel Giraldo, directeur des relations institutionnelles \u00e0 Ag\u00fces de Barcelona, une filiale de Veolia.<\/p>\n<p>Mise en service en 2009, l\u2019usine de dessalement du Llobergat distribue de l\u2019eau potable \u00e0 154\u00a0municipalit\u00e9s catalanes, soit cinq millions d\u2019habitants. <i>\u00ab<\/i><i>\u00a0<\/i><i>Nous captons l\u2019eau \u00e0 2,2 km des c\u00f4tes, soit \u00e0 32<\/i><i>\u00a0<\/i><i>m\u00e8tres de profondeur. Deux tours de 4m de diam\u00e8tre r\u00e9cup\u00e8rent l\u2019eau qui est envoy\u00e9e via des canalisations vers la station de dessalement, \u00e0 plus de 3 km<\/i><i>\u00a0<\/i><i>\u00bb<\/i>, fait valoir Carlos Miguel, directeur de la station. Le proc\u00e9d\u00e9 se d\u00e9roule en plusieurs \u00e9tapes\u00a0: un premier traitement par flottation afin d\u2019\u00e9liminer les micro-organismes et les algues suivi de plusieurs filtrations dont une par osmose inverse, avant d\u2019\u00eatre remin\u00e9ralis\u00e9e afin d\u2019\u00eatre consomm\u00e9e. <i>\u00ab<\/i><i>\u00a0<\/i><i>Sur 100<\/i><i>\u00a0<\/i><i>litres d\u2019eau sal\u00e9e, nous obtenons 45<\/i><i>\u00a0<\/i><i>litres d\u2019eau douce<\/i><i>\u00a0<\/i><i>\u00bb<\/i>, poursuit Carlos Miguel. Le reste \u00e9tant rejet\u00e9 dans la mer. La m\u00e9thode est lou\u00e9e notamment pour sa compl\u00e9mentarit\u00e9 avec la r\u00e9utilisation des eaux us\u00e9es trait\u00e9es (Reut). <i>\u00ab<\/i><i>\u00a0<\/i><i>Lors de fortes pluies, beaucoup de mati\u00e8re est en suspension, la qualit\u00e9 de l\u2019eau du fleuve n\u2019est pas bonne, ce qui fait que les usines de Reut ne peuvent fonctionner. Il faut donc utiliser le dessalement<\/i><i>\u00a0<\/i><i>\u00bb<\/i>, insiste Carlos Miguel. Si aucun impact sur la faune et la flore marines n\u2019est \u00e0 relever selon le directeur de l\u2019usine, son co\u00fbt est n\u00e9anmoins plus \u00e9lev\u00e9 que la Reut. <i>\u00ab<\/i><i>\u00a0<\/i><i>Alors que l\u2019eau issue de la Reut et d\u2019une station de potabilisation a un co\u00fbt de 32<\/i><i>\u00a0<\/i><i>centimes le m\u00e8tre cube, celui d\u2019une usine de dessalement est de 64 centimes<\/i><i>\u00a0<\/i><i>\u00bb<\/i>, observe Miquel Paraira, directeur de la qualit\u00e9 de l\u2019eau \u00e0 Aig\u00fces de Barcelona. Deux projets d\u2019usine sont d\u00e9j\u00e0 dans les cartons, portant \u00e0 quatre le nombre d\u2019usines de dessalement en Catalogne.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"Deux cents millions de litres d&rsquo;eau par jour. C&rsquo;est la capacit&eacute; de production de l&rsquo;usine de dessalement du Llobergat, &agrave; Barcelone. G&eacute;r&eacute;e par l&rsquo;entreprise publique Ens d&rsquo;Abastament &#8230;","protected":false},"author":1,"featured_media":32924,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[918,3926,3925,333],"tags":[3275,207,417,309,238,239,284,419,1399,1397,1679,469],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-32923","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil","category-accueil-merge","category-accueil-third","category-environnement","tag-adaptation-climatique","tag-changement-climatique","tag-climat","tag-eau","tag-gard","tag-herault","tag-occitanie","tag-rechauffement-climatique","tag-ressources","tag-secheresse","tag-sel","tag-veolia","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/32923","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/comments?post=32923"}],"version-history":[{"count":1,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/32923\/revisions"}],"predecessor-version":[{"id":32925,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/32923\/revisions\/32925"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/32924"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=32923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=32923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=32923"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=32923"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=32923"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=32923"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=32923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}