{"id":4127,"date":"2022-06-30T08:39:39","date_gmt":"2022-06-30T06:39:39","guid":{"rendered":"https:\/\/dbvib-ingenierie.com\/?p=4127"},"modified":"2022-06-30T11:17:11","modified_gmt":"2022-06-30T09:17:11","slug":"traitements-acoustiques-de-la-station-depuration-des-eaux-usees-de-villefranche-sur-saone","status":"publish","type":"post","link":"https:\/\/dbvib-ingenierie.com\/traitements-acoustiques-de-la-station-depuration-des-eaux-usees-de-villefranche-sur-saone\/","title":{"rendered":"Traitements acoustiques STEP"},"content":{"rendered":"<h1>Traitements acoustiques \u00e0 la station d\u2019\u00e9puration des eaux us\u00e9es de Villefranche sur Sa\u00f4ne.<\/h1>\n<p>OTV, filiale V\u00e9olia, en charge de la requalification de la station d&#8217;\u00e9puration des eaux us\u00e9es (STEP) de Villefranche sur Sa\u00f4ne a fait appel au groupe dB Vib pour les traitements acoustiques des futures installations.<\/p>\n<p>L\u2019\u00e9tudes des impacts acoustiques et pr\u00e9conisation de solution de traitement a \u00e9t\u00e9 confi\u00e9e \u00e0 <a href=\"https:\/\/dbvib-consulting.com\/etude-des-impact\u2026ranche-sur-saone\/\">dB Vib Consulting <\/a>. Puis \u00e0 l\u2019issue des consultations sur appel d\u2019offre, la r\u00e9alisation des solutions de traitements acoustiques a \u00e9t\u00e9 confi\u00e9 \u00e0 <a href=\"https:\/\/dbvib-ingenierie.com\/actualites\">dB Vib Ing\u00e9nierie.<\/a><\/p>\n<p>Ainsi, dB Vib ing\u00e9nierie s\u2019est vue confier les r\u00e9alisations suivantes :<\/p>\n<ul>\n<li>La conception, r\u00e9alisation et fourniture de 6 silencieux pour les gaines de sortie des surpresseurs<\/li>\n<li>La conception, r\u00e9alisation et installation de la ventilation insonoris\u00e9e du local surpresseur<\/li>\n<li>La conception, r\u00e9alisation et installation de la ventilation insonoris\u00e9e du local d\u00e9sodorisation<\/li>\n<li>La conception, r\u00e9alisation et installation de la ventilation insonoris\u00e9e de deux locaux transformateurs.<\/li>\n<\/ul>\n<h2><strong>Silencieux (ou pi\u00e8ges \u00e0 sons) en sortie des surpresseurs\u00a0:<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4142 size-large\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/6-1024x410.png\" alt=\"Hypoth\u00e8se retenue par l'\u00e9tude d'impact acoustique en amont\" width=\"1024\" height=\"410\" \/><\/p>\n<h3>dB Vib a con\u00e7u et assur\u00e9 la fourniture sur le site de Villefranche sur Sa\u00f4ne, des 6 silencieux pour une installation \u00e0 la charge d\u2019OTV.<\/h3>\n<p><img decoding=\"async\" class=\"alignleft wp-image-4140\" title=\"OTV Traitements acoustique Silencieux\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-153x300.png\" alt=\"OTV Traitements acoustique Silencieux\" width=\"227\" height=\"445\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-153x300.png 153w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-523x1024.png 523w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-768x1502.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-785x1536.png 785w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-440x861.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-200x391.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830-315x616.png 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/5-e1656321534830.png 800w\" sizes=\"(max-width: 227px) 100vw, 227px\" \/><\/p>\n<p><strong>Dimensions\u00a0:<\/strong><\/p>\n<ul>\n<li>Longueur totale : 1400 mm<\/li>\n<li>Diam\u00e8tre : 610 mm<\/li>\n<li>Bulbe (baffle) int\u00e9rieur : diam\u00e8tre 286 mm<\/li>\n<li>Epaisseur t\u00f4le : 3 mm<\/li>\n<li>Poids : 100kg<\/li>\n<\/ul>\n<p><strong>Conditions de service : <\/strong><\/p>\n<ul>\n<li>D\u00e9bit volumique : 1110m3\/h maximum<\/li>\n<li>Le silencieux est soumis \u00e0 une pression maximum de 2.1 bar absolu.<\/li>\n<li>D\u00e9bit massique : 832kg\/h maximum @190\u00b0C et @ P=2.1 bar absolu.<\/li>\n<\/ul>\n<p><strong>A\u00e9raulique : <\/strong><\/p>\n<ul>\n<li>Vitesse de passage : 18m\/s<\/li>\n<li>Perte de charge : <strong>165Pa <\/strong><\/li>\n<\/ul>\n<p><strong>Mat\u00e9riaux et accessoires\u00a0:<\/strong><\/p>\n<ul>\n<li>T\u00f4le perfor\u00e9e INOX 304 + t\u00f4le ext\u00e9rieur en acier peint + brides en acier S275 peint<\/li>\n<li>Absorbant : laine de roche<\/li>\n<li>Raccordement par bride PN10 DN150<\/li>\n<li>2 Anneaux de levage<\/li>\n<li>1 Pied support (pour une position verticale)<\/li>\n<li>Peinture haute temp\u00e9rature 80 micron<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4128\" style=\"font-size: 16px;font-weight: 400\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-407x1024.jpg\" alt=\"Test sous pressions des silencieux en fin de fabrication selon la directive des \u00e9quipements sous pression (DESP)\" width=\"131\" height=\"330\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-407x1024.jpg 407w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-119x300.jpg 119w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-610x1536.jpg 610w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-440x1108.jpg 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-200x504.jpg 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133-315x793.jpg 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/IMG-20211230-WA0014-e1656321618133.jpg 634w\" sizes=\"(max-width: 131px) 100vw, 131px\" \/><\/p>\n<p style=\"text-align: center\"><em>Test sous pressions des silencieux en fin de fabrication<\/em><br \/>\n<em>selon la directive des \u00e9quipements sous pression (DESP)<\/em><\/p>\n<h2><strong>Ventilation insonoris\u00e9e du local surpresseurs :<\/strong><\/h2>\n<p>Le bureau d\u2019\u00e9tude dB Vib Ing\u00e9nierie a choisi d\u2019\u00e9quip\u00e9 le locale de 2 ventilateurs axial avec soufflage horizontal conforme au cahier des charges OTV.<\/p>\n<p>Ensuite il a con\u00e7u 2 silencieux a baffles install\u00e9s sur chaque ventilateur r\u00e9pondant aux performances acoustiques pr\u00e9conis\u00e9es par l\u2019\u00e9tudes acoustique r\u00e9alis\u00e9e en amont par dB Vib Consulting.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4134\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-1024x410.png\" alt=\"Entr\u00e9e d\u2019air du local surpresseur : 2 ventilateurs \u00e9quip\u00e9s de silencieux \u00e0 baffles Vue de l\u2019int\u00e9rieur du local surpresseurs\" width=\"872\" height=\"349\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-1024x410.png 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-300x120.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-768x307.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-1536x614.png 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-1920x768.png 1920w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-900x360.png 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-440x176.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-200x80.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3-315x126.png 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/3.png 2000w\" sizes=\"(max-width: 872px) 100vw, 872px\" \/><\/p>\n<h3 style=\"text-align: center\"><em>Entr\u00e9e d\u2019air du local surpresseur : 2 ventilateurs \u00e9quip\u00e9s de silencieux \u00e0 baffles<br \/>\n<\/em><em>Vue de l\u2019int\u00e9rieur du local surpresseur<\/em><em>s<\/em><\/h3>\n<h3>Les silencieux de l\u2019entr\u00e9e d\u2019air du local ont \u00e9t\u00e9 s\u00e9par\u00e9s en 2 afin d\u2019\u00e9viter la recirculation d\u2019air si l\u2019un des ventilateurs est \u00e0 l\u2019arr\u00eat. Ils sont constitu\u00e9s de 13 baffles :<\/h3>\n<ul>\n<li>Cadre 10\/10mm<\/li>\n<li>Absorbant : Laine de roche 50 kg\/m3 avec 2 voiles de verre blanc 50 gr\/m2<\/li>\n<li>Epaisseur : 200 mm<\/li>\n<li>Ecartement : 61.5mm<\/li>\n<li>Protection m\u00e9tal d\u00e9ploy\u00e9 10\/10mm<\/li>\n<li>Caisson en acier galvanis\u00e9 15\/10<\/li>\n<li>Cadre METU 30 mm<\/li>\n<li>Vitesse de circulation entre les baffles : 8.3 m\/s<\/li>\n<li>Vitesse frontale : 2 m\/s (vitesse suffisamment faible pour garantir 100% d\u2019efficacit\u00e9 pour la grille pare-pluie)<\/li>\n<\/ul>\n<p>En sortie d\u2019air du local, dB Vib a con\u00e7u r\u00e9alis\u00e9 et install\u00e9 2 silencieux \u00e0 baffles. Ces deux silencieux sont support\u00e9s par 2 rails. Ils ont \u00e9t\u00e9 suspendus en plafond c\u00f4te \u00e0 c\u00f4te par tige filet\u00e9 pour minimiser leur encombrement. De plus, l\u2019espace entre les 2 silencieux a \u00e9t\u00e9 ferm\u00e9 afin de contraindre le flux d\u2019air \u00e0 passer dans les silencieux. Ces 2 silencieux sont constitu\u00e9s de 6 baffles :<\/p>\n<ul>\n<li>Cadre 12\/10mm<\/li>\n<li>Absorbant : Laine de roche 50 kg\/m3 avec 2 voiles de verre blanc 50 gr\/m2,<\/li>\n<li>Epaisseur : 200 mm<\/li>\n<li>Ecartement : 83.3 mm<\/li>\n<li>Protection m\u00e9tal d\u00e9ploy\u00e9 10\/10mm<\/li>\n<li>Caisson en acier galvanis\u00e9 15\/10<\/li>\n<li>Cadre METU 30 mm<\/li>\n<li>Vitesse de circulation entre les baffles : 7.9m\/s<\/li>\n<li>Vitesse frontale : 2.6 m\/s (vitesse suffisamment faible pour garantir 100% d\u2019efficacit\u00e9 pour la grille pare-pluie)<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4138\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-1024x410.png\" alt=\"Sortie d\u2019air du local surpresseur : 2 silencieux \u00e0 baffles suspendus au plafond Vue de l\u2019int\u00e9rieur du local surpresseurs\" width=\"787\" height=\"315\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-1024x410.png 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-300x120.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-768x307.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-1536x614.png 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-1920x768.png 1920w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-900x360.png 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-440x176.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-200x80.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2-315x126.png 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/2.png 2000w\" sizes=\"(max-width: 787px) 100vw, 787px\" \/><\/p>\n<p style=\"text-align: center\"><em>Sortie d\u2019air du local surpresseur : 2 silencieux \u00e0 baffles suspendus au plafond<br \/>\n<\/em><em>Vue de l\u2019int\u00e9rieur du local surpresseurs<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4132\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-1024x410.png\" alt=\"Sortie d\u2019air du local surpresseur : pose des 2 silencieux \u00e0 baffles suspendus Vue de l\u2019int\u00e9rieur du local surpresseurs\" width=\"622\" height=\"249\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-1024x410.png 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-300x120.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-768x307.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-1536x614.png 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-1920x768.png 1920w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-900x360.png 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-440x176.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-200x80.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1-315x126.png 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/1.png 2000w\" sizes=\"(max-width: 622px) 100vw, 622px\" \/><\/p>\n<p style=\"text-align: center\"><em>Sortie d\u2019air du local surpresseur : pose des 2 silencieux \u00e0 baffles suspendus<br \/>\n<\/em><em>Vue de l\u2019int\u00e9rieur du local surpresseurs<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4130\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-1024x466.jpeg\" alt=\"Sortie d\u2019air du local surpresseur : 2 silencieux \u00e0 baffles Vue de l\u2019ext\u00e9rieur du local surpresseurs avant pose des pare-pluies\" width=\"598\" height=\"272\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-1024x466.jpeg 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-300x136.jpeg 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-768x349.jpeg 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-1536x698.jpeg 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-1920x873.jpeg 1920w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-900x409.jpeg 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-440x200.jpeg 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-200x91.jpeg 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972-315x143.jpeg 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/WhatsApp-Image-2021-12-17-at-13.40.17-e1656420109972.jpeg 2048w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/p>\n<p style=\"text-align: center\"><em>Sortie d\u2019air du local surpresseur : 2 silencieux \u00e0 baffles<br \/>\n<\/em><em>Vue de l\u2019ext\u00e9rieur du local surpresseurs avant pose des pare-pluies<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><strong><em><img decoding=\"async\" class=\"aligncenter wp-image-4136\" title=\"OTV Traitements acoustique\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-1024x506.png\" alt=\"Sortie d\u2019air du local surpresseur : 2 silencieux \u00e0 baffles Vue de l\u2019ext\u00e9rieur du local surpresseurs apr\u00e8s pose des pare-pluies\" width=\"600\" height=\"297\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-1024x506.png 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-300x148.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-768x379.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-1536x759.png 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-900x444.png 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-440x217.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-200x99.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762-315x156.png 315w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2022\/06\/4-e1656321800762.png 1620w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/em><\/strong><\/p>\n<p style=\"text-align: center\"><em>Sortie d\u2019air du local surpresseur : 2 silencieux \u00e0 baffles<br \/>\n<\/em><em>Vue de l\u2019ext\u00e9rieur du local surpresseurs apr\u00e8s pose des pare-pluies<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Traitements acoustiques \u00e0 la station d\u2019\u00e9puration des eaux us\u00e9es de Villefranche sur Sa\u00f4ne. OTV, filiale V\u00e9olia, en charge de la requalification de la station d&#8217;\u00e9puration des eaux us\u00e9es (STEP) de Villefranche sur Sa\u00f4ne a fait appel au groupe dB Vib pour les traitements acoustiques des futures installations. L\u2019\u00e9tudes des impacts acoustiques et pr\u00e9conisation de solution [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Traitements acoustiques STEP - dB Vib Ing\u00e9nierie<\/title>\n<meta name=\"description\" content=\"Traitements acoustiques \u00e0 la station d\u2019\u00e9puration (STEP) avec les \u00e9tudes des impacts acoustiques et pr\u00e9conisation de solutions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dbvib-ingenierie.com\/traitements-acoustiques-de-la-station-depuration-des-eaux-usees-de-villefranche-sur-saone\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Traitements acoustiques STEP - 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