{"id":36777,"date":"2022-04-27T12:28:12","date_gmt":"2022-04-27T12:28:12","guid":{"rendered":"https:\/\/stage.ionexchangeglobal.com\/?page_id=36777"},"modified":"2023-09-28T17:19:33","modified_gmt":"2023-09-28T11:49:33","slug":"systeme-a-boues-activees","status":"publish","type":"page","link":"https:\/\/ionexchangeglobal.com\/int\/fr\/systeme-a-boues-activees\/","title":{"rendered":"Syst\u00e8me \u00e0 boues activ\u00e9es"},"content":{"rendered":"\t\t
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PROC\u00c9D\u00c9 DE BOUES ACTIV\u00c9ES INDION<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Le proc\u00e9d\u00e9 par boues activ\u00e9es implique un bassin d’a\u00e9ration contenant des micro-organismes en suspension (MLSS) qui d\u00e9gradent la mati\u00e8re organique pr\u00e9sente dans les effluents. Le MLSS est ensuite d\u00e9cant\u00e9 dans un clarificateur secondaire et les boues d\u00e9cant\u00e9es sont remises en circulation dans un r\u00e9servoir d’a\u00e9ration pour maintenir le MLSS. L’air\/oxyg\u00e8ne est fourni soit par un syst\u00e8me d’a\u00e9ration de surface, soit par diffusion. Le temps de r\u00e9tention hydraulique (HRT) est d’environ 6 \u00e0 7 heures et le temps de r\u00e9tention des boues (SRT) est compris entre 8 et 15 jours.<\/p>\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

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A\u00c9RATION \u00c9TENDU INDION<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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L’a\u00e9ration prolong\u00e9e est similaire au proc\u00e9d\u00e9 \u00e0 boues activ\u00e9es, sauf qu’elle inclut un HRT (8 \u00e0 10 heures) et un SRT (20 \u00e0 25 jours) plus \u00e9lev\u00e9s que le proc\u00e9d\u00e9 \u00e0 boues activ\u00e9es et produit donc des boues hautement stabilis\u00e9es.<\/p>

R\u00e9action:<\/strong><\/p>

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Un syst\u00e8me d’a\u00e9ration diffuse doit \u00eatre utilis\u00e9 pour fournir l’oxyg\u00e8ne souhait\u00e9 aux micro-organismes, ce qui sert \u00e9galement \u00e0 maintenir le contenu du r\u00e9acteur dans un r\u00e9gime compl\u00e8tement m\u00e9lang\u00e9 et \u00e0 dissoudre le niveau d’oxyg\u00e8ne (OD) de 2 ppm.<\/p>

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CLARIFICATEUR SECONDAIRE INDION<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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La liqueur m\u00e9lang\u00e9e du r\u00e9servoir d’a\u00e9ration entre dans le puits central du clarificateur secondaire INDION pour la s\u00e9paration des boues et du liquide. \u00c0 la fin de la p\u00e9riode d’a\u00e9ration, le m\u00e9lange d’eaux us\u00e9es et de masse biologique (liqueur m\u00e9lang\u00e9e) s’\u00e9coule par la sortie vers le clarificateur secondaire INDION. Ici, les mati\u00e8res en suspension (MLSS) et le liquide sont s\u00e9par\u00e9s par gravit\u00e9. Les solides s\u00e9par\u00e9s sont renvoy\u00e9s vers le bassin d’a\u00e9ration en tant que boues de retour, tandis que le liquide d\u00e9borde du d\u00e9versoir dans le r\u00e9servoir d’eau clarifi\u00e9e pour un traitement ult\u00e9rieur.<\/p>

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PROC\u00c9D\u00c9 DE BOUES ACTIV\u00c9ES INDION Le proc\u00e9d\u00e9 par boues activ\u00e9es implique un bassin d’a\u00e9ration contenant des micro-organismes en suspension (MLSS) qui d\u00e9gradent la mati\u00e8re organique pr\u00e9sente dans les effluents. Le MLSS est ensuite d\u00e9cant\u00e9 dans un clarificateur secondaire et les boues d\u00e9cant\u00e9es sont remises en circulation dans un r\u00e9servoir d’a\u00e9ration pour maintenir le MLSS. L’air\/oxyg\u00e8ne…<\/p>\n","protected":false},"author":4,"featured_media":23689,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"inline_featured_image":false},"yoast_head":"\nSyst\u00e8me \u00e0 boues activ\u00e9es - Ion Exchange<\/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:\/\/ionexchangeglobal.com\/int\/fr\/systeme-a-boues-activees\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Syst\u00e8me \u00e0 boues activ\u00e9es - Ion Exchange\" \/>\n<meta property=\"og:description\" content=\"PROC\u00c9D\u00c9 DE BOUES ACTIV\u00c9ES INDION Le proc\u00e9d\u00e9 par boues activ\u00e9es implique un bassin d’a\u00e9ration contenant des micro-organismes en suspension (MLSS) qui d\u00e9gradent la mati\u00e8re organique pr\u00e9sente dans les effluents. 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