{"id":9556,"date":"2023-04-21T08:49:03","date_gmt":"2023-04-21T06:49:03","guid":{"rendered":"https:\/\/sceaux-lagazette.fr\/?p=9556"},"modified":"2023-05-01T18:33:31","modified_gmt":"2023-05-01T16:33:31","slug":"visite-du-site-de-traitement-des-dechets-semardel-a-vert-le-grand","status":"publish","type":"post","link":"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/04\/21\/visite-du-site-de-traitement-des-dechets-semardel-a-vert-le-grand\/","title":{"rendered":"Visite du site de traitement des d\u00e9chets Semardel \u00e0 Vert-le-Grand"},"content":{"rendered":"\n<p class=\"has-drop-cap\"><strong>COMPTE-RENDU<\/strong> <em>La Gazette accueille un article que <a rel=\"noreferrer noopener\" href=\"https:\/\/transition-ecologique-chatenay.fr\/\" target=\"_blank\">Transition Ecologique Ch\u00e2tenay<\/a> a publi\u00e9 sur son site. L&rsquo;association, parmi ses activit\u00e9s, m\u00e8ne une sensibilisation sur la production et la valorisation des d\u00e9chets. Dans ce cadre, elle a organis\u00e9 une visite du centre de Vert-le-Grand. Yves Barriol en rapporte la substance. <\/em><\/p>\n\n\n\n<p>Ainsi, le 23 janvier dernier, un groupe de 8 membres de TEC a visit\u00e9 le site de la soci\u00e9t\u00e9 Semardel \u00e0 Vert-le-Grand, Essonne. C\u2019est l\u00e0 que sont tri\u00e9es les poubelles jaunes des communes au sud du territoire Vall\u00e9e Sud Grand Paris&nbsp;:&nbsp; Le Plessis-Robinson, Ch\u00e2tenay-Malabry, Sceaux, Bourg-la-Reine et Antony. Semardel est une soci\u00e9t\u00e9 d\u2019\u00e9conomie mixte, 70% publique, 30% priv\u00e9e. Son client principal est le Siredom, syndicat intercommunal de traitement des d\u00e9chets, au service de communes de l\u2019Essonne et de Seine-et-Marne.<\/p>\n\n\n\n<p>Une personne du service Relations publiques nous a tr\u00e8s amicalement re\u00e7us. Elle nous a conduits \u00e0 travers le site, tr\u00e8s vaste, dans un mini-bus fourni par l\u2019entreprise. Elle a partag\u00e9 beaucoup d\u2019informations et fait de son mieux pour r\u00e9pondre \u00e0 nos nombreuses questions. Nous avons suivi le parcours type, bien \u00e9quip\u00e9s de casques, masques, gilets et sur-chaussures. La visite comprend l\u2019installation de stockage de d\u00e9chets et de r\u00e9cup\u00e9ration de \u00ab biogaz \u00bb, ainsi que l\u2019usine qui regroupe deux lignes de tri des d\u00e9chets du bac jaune et une unit\u00e9 d\u2019incin\u00e9ration des ordures m\u00e9nag\u00e8res. Nous avons vu une partie seulement des nombreux \u00e9quipements pr\u00e9sents sur \u00ab l\u2019\u00c9cosite \u00bb.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>L\u2019usine de tri des poubelles jaunes<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-medium is-resized\"><img decoding=\"async\" src=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/tri-d\u00e9chets-Vert-le-grand-300x225.jpg\" alt=\"\" class=\"wp-image-9581\" width=\"300\" height=\"225\" srcset=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/tri-d\u00e9chets-Vert-le-grand-300x225.jpg 300w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/tri-d\u00e9chets-Vert-le-grand-768x576.jpg 768w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/tri-d\u00e9chets-Vert-le-grand.jpg 972w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption>Une toute petite partie de l\u2019une des deux lignes de tri automatique<\/figcaption><\/figure><\/div>\n\n\n\n<p>Nous avons \u00e9t\u00e9 impressionn\u00e9s par le syst\u00e8me de tri des poubelles jaunes, un complexe assemblage de tapis roulants et de machines automatis\u00e9es \u00e9quip\u00e9es de divers types de capteurs. L\u2019ensemble s\u2019efforce de s\u00e9parer les diff\u00e9rentes mati\u00e8res, papiers, cartons, sacs plastiques, bouteilles plastiques, m\u00e9talliques, etc&#8230;  En fin de cha\u00eene, des ouvriers, pench\u00e9s sur d\u2019autres tapis roulants sur lesquels les d\u00e9chets d\u00e9filent rapidement, font de leur mieux pour corriger les erreurs commises par les machines. Les objets mal tri\u00e9s, ou ne pouvant \u00eatre tri\u00e9s car compos\u00e9s d\u2019un assemblage de mat\u00e9riaux non compatibles, sont selon les cas renvoy\u00e9s aux machines de tri, ou d\u00e9tourn\u00e9s vers l\u2019incin\u00e9rateur.<\/p>\n\n\n\n<p>La capacit\u00e9 totale de ces \u00e9quipements est d\u2019environ 95 kilotonnes par an. \u00c0 comparer aux 42kg par habitant, soit environ 1.400 tonnes exp\u00e9di\u00e9es en poubelles jaunes par notre commune.<\/p>\n\n\n\n<p>Que peuvent faire les citoyens pour faciliter ce processus&nbsp;? &nbsp;Notre h\u00f4tesse a indiqu\u00e9 plusieurs pistes&nbsp;: ne pas d\u00e9poser les d\u00e9chets dans des sacs, ne pas \u00e9craser les bouteilles en plastique (ce qui en rend l\u2019identification automatique plus difficile), ne pas les s\u00e9parer de leurs bouchons (sauf pour \u00e9ventuellement les donner \u00e0 une association qui les collecte s\u00e9par\u00e9ment) \u00bb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>L\u2019usine d\u2019incin\u00e9ration<\/strong><\/h2>\n\n\n\n<p>Entre les deux lignes de tri des emballages, nous avons visit\u00e9 le poste de contr\u00f4le de l\u2019usine d\u2019incin\u00e9ration. Nous avons admir\u00e9 la dext\u00e9rit\u00e9 de l\u2019op\u00e9rateur aux commandes d\u2019une \u00e9norme pince utilis\u00e9e pour pr\u00e9lever les d\u00e9chets m\u00e9nagers accumul\u00e9s dans une immense fosse et en nourrir les deux chaudi\u00e8res. Les fum\u00e9es sont filtr\u00e9es \u00e0 l\u2019aide de bicarbonate de soude et de charbon actif. La chaleur sert \u00e0 produire localement de l\u2019\u00e9lectricit\u00e9 et alimente un r\u00e9seau d\u2019eau chaude \u00e0 Evry. Notez que nos d\u00e9chets m\u00e9nagers ne sont pas br\u00fbl\u00e9s \u00e0 Vert-le-Grand, mais \u00e0 Massy, dans une usine similaire appartenant \u00e0 l\u2019\u00e9quivalent local du Siredom, le Simacur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>L\u2019installation de stockage de d\u00e9chets et de r\u00e9cup\u00e9ration de biogaz<\/strong><\/h2>\n\n\n\n<p>Nous avons r\u00e9alis\u00e9 qu\u2019en 2023 nous continuons \u00e0 construire des montagnes de d\u00e9chets dits \u00ab ultimes \u00bb. Ce sont ceux qui ne peuvent ni \u00eatre tri\u00e9s puis r\u00e9utilis\u00e9s ou recycl\u00e9s, ni \u00eatre valoris\u00e9s \u00e9nerg\u00e9tiquement. Des montagnes ou des collines diront les plus optimistes, ou des \u00ab casiers \u00bb, selon l\u2019euph\u00e9misme utilis\u00e9 par les professionnels\u2026 Ces d\u00e9chets sont par exemple issus de la d\u00e9construction de b\u00e2timents et de mati\u00e8res trop diverses pour \u00eatre tri\u00e9s, concass\u00e9s puis utilis\u00e9s en soubassement de routes, ou encore issus de nos \u00abencombrants \u00bb\u2026 Semardel en \u00ab stocke \u00bb 330 kilotonnes par an, pour la post\u00e9rit\u00e9. Nous avons \u00e9t\u00e9 impressionn\u00e9s par le d\u00e9fil\u00e9 incessant de gros camions-bennes.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-medium\"><img decoding=\"async\" width=\"300\" height=\"158\" src=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/IMG_153545_paysage-300x158.jpg\" alt=\"\" class=\"wp-image-9580\" srcset=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/IMG_153545_paysage-300x158.jpg 300w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/IMG_153545_paysage-1024x538.jpg 1024w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/IMG_153545_paysage-768x404.jpg 768w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/IMG_153545_paysage-1536x808.jpg 1536w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2023\/04\/IMG_153545_paysage.jpg 1664w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption>L\u2019usine de production de m\u00e9thane, devant une des montagnes, celle qui est en construction<\/figcaption><\/figure><\/div>\n\n\n\n<p>Quelques bonnes nouvelles cependant&nbsp;: chaque chargement est d\u00fbment v\u00e9rifi\u00e9 et refus\u00e9 d\u00e8s qu\u2019on y d\u00e9tecte toxicit\u00e9 ou radioactivit\u00e9. Les \u00ab&nbsp;casiers&nbsp;\u00bb sont \u00ab&nbsp;\u00e9tanches&nbsp;\u00bb, afin de minimiser le risque de pollution du sol et des eaux. Le \u00ab&nbsp;bio-&nbsp;\u00bb m\u00e9thane issu de la fermentation de la partie organique de ces d\u00e9chets ne s\u2019\u00e9chappe pas dans l\u2019atmosph\u00e8re comme de par le pass\u00e9, mais est capt\u00e9 et valoris\u00e9.<\/p>\n\n\n\n<p>Nous avons beaucoup appris lors de cette passionnante visite. Nous avons quitt\u00e9 le site avec beaucoup d\u2019informations, mais aussi des sentiments mitig\u00e9s au vu de l\u2019\u00e9norme quantit\u00e9 de d\u00e9chets produits par notre soci\u00e9t\u00e9, et de la complexit\u00e9 et des limites \u00e9videntes des proc\u00e9d\u00e9s de recyclage et de valorisation. Avec aussi beaucoup de questions que nous n\u2019avons pas eu le temps de poser, ou auxquelles notre h\u00f4tesse n\u2019a pas pu r\u00e9pondre. Elle nous a promis des informations quant aux entreprises vers lesquelles sont dirig\u00e9s les emballages apr\u00e8s le tri \u00e0 Vert-le-Grand. Nous pr\u00e9voyons de les contacter et continuer \u00e0 \u00e9tudier les processus complexes de la gestion de nos d\u00e9chets.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pour en savoir plus\u200b<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Le site de la soci\u00e9t\u00e9 <a href=\"https:\/\/www.semardel.fr\/\">Semardel<\/a>,<\/li><li>Les articles <a href=\"https:\/\/transition-ecologique-chatenay.fr\/le-systeme-de-gestion-des-dechets-de-notre-ville\/\">Le syst\u00e8me de gestion des d\u00e9chets de notre ville<\/a> et <a href=\"https:\/\/transition-ecologique-chatenay.fr\/faciliter-la-gestion-de-nos-dechets\/\">Que pouvons-nous faire pour faciliter la gestion de nos d\u00e9chets<\/a> sur le site de l\u2019association TEC.<\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>COMPTE-RENDU La Gazette accueille un article que Transition Ecologique Ch\u00e2tenay a publi\u00e9 sur son site. L&rsquo;association, parmi ses activit\u00e9s, m\u00e8ne une sensibilisation sur la production et la valorisation des d\u00e9chets. Dans ce cadre, elle a organis\u00e9 une visite du centre de Vert-le-Grand. Yves Barriol en rapporte la substance. Ainsi, le&#8230;<\/p>\n","protected":false},"author":39,"featured_media":9579,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[258,249],"tags":[],"class_list":["post-9556","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environnement","category-les-plus-lus","entry","simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Visite du site de traitement des d\u00e9chets Semardel \u00e0 Vert-le-Grand - La Gazette<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/04\/21\/visite-du-site-de-traitement-des-dechets-semardel-a-vert-le-grand\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Visite du site de traitement des d\u00e9chets Semardel \u00e0 Vert-le-Grand - La Gazette\" \/>\n<meta property=\"og:description\" content=\"COMPTE-RENDU La Gazette accueille un article que Transition Ecologique Ch\u00e2tenay a publi\u00e9 sur son site. 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