{"id":629,"date":"2025-09-19T08:38:09","date_gmt":"2025-09-19T08:38:09","guid":{"rendered":"https:\/\/sodecon.be\/cases\/remediation-des-btex-par-injection-de-sulfate\/"},"modified":"2025-09-26T14:58:01","modified_gmt":"2025-09-26T14:58:01","slug":"remediation-des-btex-par-injection-de-sulfate","status":"publish","type":"cases","link":"https:\/\/sodecon.be\/fr\/cases\/remediation-des-btex-par-injection-de-sulfate\/","title":{"rendered":"Rem\u00e9diation des BTEX par injection de sulfate"},"content":{"rendered":"[vc_row type=\u00a0\u00bbin_container\u00a0\u00bb full_screen_row_position=\u00a0\u00bbmiddle\u00a0\u00bb column_margin=\u00a0\u00bb70px\u00a0\u00bb equal_height=\u00a0\u00bbyes\u00a0\u00bb content_placement=\u00a0\u00bbmiddle\u00a0\u00bb column_direction=\u00a0\u00bbdefault\u00a0\u00bb column_direction_tablet=\u00a0\u00bbdefault\u00a0\u00bb column_direction_phone=\u00a0\u00bbdefault\u00a0\u00bb scene_position=\u00a0\u00bbcenter\u00a0\u00bb top_padding=\u00a0\u00bb100px\u00a0\u00bb bottom_padding=\u00a0\u00bb5%\u00a0\u00bb top_padding_phone=\u00a0\u00bb30px\u00a0\u00bb constrain_group_5=\u00a0\u00bbyes\u00a0\u00bb bottom_padding_phone=\u00a0\u00bb30px\u00a0\u00bb text_color=\u00a0\u00bbdark\u00a0\u00bb text_align=\u00a0\u00bbleft\u00a0\u00bb row_border_radius=\u00a0\u00bbnone\u00a0\u00bb row_border_radius_applies=\u00a0\u00bbbg\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb shape_divider_color=\u00a0\u00bb#f7f8f9&Prime; shape_divider_position=\u00a0\u00bbbottom\u00a0\u00bb shape_divider_height=\u00a0\u00bb100px\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb shape_type=\u00a0\u00bbstraight_section\u00a0\u00bb][vc_column column_padding=\u00a0\u00bbno-extra-padding\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbinherit\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; background_hover_color_opacity=\u00a0\u00bb1&Prime; column_backdrop_filter=\u00a0\u00bbnone\u00a0\u00bb column_shadow=\u00a0\u00bbnone\u00a0\u00bb column_border_radius=\u00a0\u00bbnone\u00a0\u00bb column_link_target=\u00a0\u00bb_self\u00a0\u00bb column_position=\u00a0\u00bbdefault\u00a0\u00bb gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; width=\u00a0\u00bb1\/1&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<h2><span style=\"color: #73b736;\">Cas : BTEX<\/span><\/h2>\n[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<h1>Rem\u00e9diation des BTEX par injection de sulfate<\/h1>\n[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]<strong>Lieu<\/strong>: Ancienne zone industrielle, Belgique<br \/><strong>Contamination<\/strong>: BTEX dans les eaux souterraines<br \/><strong>Superficie<\/strong>: \u00b1 3 000 m\u00b2<br \/><strong>Profondeur<\/strong>: jusqu&rsquo;\u00e0 20 m\u00e8tres<br \/><strong>P\u00e9riode<\/strong>: 2017-2024<br \/><strong>Statut<\/strong>: D\u00e9claration finale d\u00e9livr\u00e9e par l&rsquo;OVAM[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=\u00a0\u00bbfull_width_content\u00a0\u00bb full_screen_row_position=\u00a0\u00bbmiddle\u00a0\u00bb column_margin=\u00a0\u00bbdefault\u00a0\u00bb equal_height=\u00a0\u00bbyes\u00a0\u00bb content_placement=\u00a0\u00bbmiddle\u00a0\u00bb column_direction=\u00a0\u00bbdefault\u00a0\u00bb column_direction_tablet=\u00a0\u00bbdefault\u00a0\u00bb column_direction_phone=\u00a0\u00bbdefault\u00a0\u00bb scene_position=\u00a0\u00bbcenter\u00a0\u00bb bottom_padding=\u00a0\u00bb5%\u00a0\u00bb text_color=\u00a0\u00bblight\u00a0\u00bb text_align=\u00a0\u00bbleft\u00a0\u00bb row_border_radius=\u00a0\u00bbnone\u00a0\u00bb row_border_radius_applies=\u00a0\u00bbbg\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb shape_divider_position=\u00a0\u00bbbottom\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb shape_type=\u00a0\u00bb\u00a0\u00bb][vc_column column_padding=\u00a0\u00bbpadding-5-percent\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbinherit\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; background_hover_color_opacity=\u00a0\u00bb1&Prime; background_image=\u00a0\u00bb349&Prime; background_image_position=\u00a0\u00bbcenter center\u00a0\u00bb background_image_stacking=\u00a0\u00bbdefault\u00a0\u00bb background_image_loading=\u00a0\u00bbdefault\u00a0\u00bb column_backdrop_filter=\u00a0\u00bbnone\u00a0\u00bb column_shadow=\u00a0\u00bbnone\u00a0\u00bb column_border_radius=\u00a0\u00bbnone\u00a0\u00bb column_link_target=\u00a0\u00bb_self\u00a0\u00bb column_position=\u00a0\u00bbdefault\u00a0\u00bb gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; width=\u00a0\u00bb2\/5&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb column_padding_type=\u00a0\u00bbdefault\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb][\/vc_column][vc_column column_padding=\u00a0\u00bbpadding-3-percent\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbpadding-5-percent\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bb#3c3c3b\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; background_hover_color_opacity=\u00a0\u00bb1&Prime; column_backdrop_filter=\u00a0\u00bbnone\u00a0\u00bb column_shadow=\u00a0\u00bbnone\u00a0\u00bb column_border_radius=\u00a0\u00bbnone\u00a0\u00bb column_link_target=\u00a0\u00bb_self\u00a0\u00bb column_position=\u00a0\u00bbdefault\u00a0\u00bb gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; width=\u00a0\u00bb3\/5&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb column_padding_type=\u00a0\u00bbdefault\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<h3><span style=\"color: #73b736;\">A propos de ce projet :<\/span><\/h3>\n[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]Un ancien site industriel \u00e9tait confront\u00e9 \u00e0 une forte contamination des eaux souterraines par des BTEX en raison d&rsquo;un ancien stockage souterrain de solvants. Apr\u00e8s la d\u00e9molition des b\u00e2timents et des r\u00e9servoirs et un assainissement classique de la zone non satur\u00e9e, une contamination persistante subsistait dans les eaux souterraines. Une pr\u00e9c\u00e9dente tentative d&rsquo;assainissement par biosparging a \u00e9chou\u00e9 en raison de la faible perm\u00e9abilit\u00e9 du sol.  <\/p>\n<p>Sodecon a propos\u00e9 une technique alternative : l&rsquo;injection de <strong>sulfate<\/strong> pour stimuler les <strong>bact\u00e9ries sulfato-r\u00e9ductrices<\/strong> du sol. Bien que ces bact\u00e9ries travaillent plus lentement que les bact\u00e9ries a\u00e9robies, le sulfate est id\u00e9al pour les sols peu perm\u00e9ables :[\/vc_column_text]<div class=\"nectar-fancy-ul\" data-list-icon=\"icon-salient-check\" data-animation=\"true\" data-animation-delay=\"0\" data-color=\"accent-color\" data-spacing=\"default\" data-alignment=\"left\"> \n<ul>\n<li>Il est facile \u00e0 injecter \u00e0 des concentrations \u00e9lev\u00e9es<\/li>\n<li>Il reste pr\u00e9sent dans le sol pendant une longue p\u00e9riode.<\/li>\n<li>Il stimule la biod\u00e9gradation \u00e0 long terme<\/li>\n<\/ul>\n <\/div>[\/vc_column][\/vc_row][vc_row type=\u00a0\u00bbfull_width_content\u00a0\u00bb full_screen_row_position=\u00a0\u00bbmiddle\u00a0\u00bb column_margin=\u00a0\u00bbdefault\u00a0\u00bb equal_height=\u00a0\u00bbyes\u00a0\u00bb content_placement=\u00a0\u00bbmiddle\u00a0\u00bb column_direction=\u00a0\u00bbdefault\u00a0\u00bb column_direction_tablet=\u00a0\u00bbdefault\u00a0\u00bb column_direction_phone=\u00a0\u00bbdefault\u00a0\u00bb scene_position=\u00a0\u00bbcenter\u00a0\u00bb bottom_padding=\u00a0\u00bb5%\u00a0\u00bb text_color=\u00a0\u00bbdark\u00a0\u00bb text_align=\u00a0\u00bbleft\u00a0\u00bb row_border_radius=\u00a0\u00bbnone\u00a0\u00bb row_border_radius_applies=\u00a0\u00bbbg\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb shape_divider_position=\u00a0\u00bbbottom\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb shape_type=\u00a0\u00bb\u00a0\u00bb][vc_column column_padding=\u00a0\u00bbpadding-3-percent\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbpadding-5-percent\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; background_hover_color_opacity=\u00a0\u00bb1&Prime; column_backdrop_filter=\u00a0\u00bbnone\u00a0\u00bb column_shadow=\u00a0\u00bbnone\u00a0\u00bb column_border_radius=\u00a0\u00bbnone\u00a0\u00bb column_link_target=\u00a0\u00bb_self\u00a0\u00bb column_position=\u00a0\u00bbdefault\u00a0\u00bb gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; width=\u00a0\u00bb1\/2&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb column_padding_type=\u00a0\u00bbdefault\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<h3><span style=\"color: #73b736;\">R\u00e9sultats :<\/span><\/h3>\n[\/vc_column_text]<div class=\"nectar-fancy-ul\" data-list-icon=\"icon-salient-check\" data-animation=\"true\" data-animation-delay=\"0\" data-color=\"accent-color\" data-spacing=\"default\" data-alignment=\"left\"> \n<ul>\n<li>Un essai pilote a \u00e9t\u00e9 men\u00e9 avec succ\u00e8s en 2017<\/li>\n<li>L&rsquo;assainissement \u00e0 grande \u00e9chelle a commenc\u00e9 en 2019 avec 160 puits d&rsquo;injection<\/li>\n<li>La premi\u00e8re injection de sulfate a \u00e9t\u00e9 r\u00e9alis\u00e9e en 2020, avec une nette diminution des concentrations de BTEX<\/li>\n<li>R\u00e9injection cibl\u00e9e sur 40 puits suivis en 2022<\/li>\n<li>L&rsquo;augmentation de l&rsquo;activit\u00e9 microbienne est rest\u00e9e perceptible jusqu&rsquo;\u00e0 4 ans apr\u00e8s l&rsquo;injection.<\/li>\n<li>En mars 2024, l&rsquo;assainissement a \u00e9t\u00e9 officiellement achev\u00e9 par une d\u00e9claration finale de l&rsquo;OVAM<\/li>\n<\/ul>\n <\/div>[vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]Gr\u00e2ce \u00e0 cette approche innovante, le site est \u00e0 nouveau pr\u00eat pour le d\u00e9veloppement industriel. De plus, la biod\u00e9gradation se poursuit activement m\u00eame apr\u00e8s la fin de l&rsquo;assainissement.[\/vc_column_text][\/vc_column][vc_column column_padding=\u00a0\u00bbpadding-5-percent\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbinherit\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; background_hover_color_opacity=\u00a0\u00bb1&Prime; background_image=\u00a0\u00bb348&Prime; background_image_position=\u00a0\u00bbcenter center\u00a0\u00bb background_image_stacking=\u00a0\u00bbdefault\u00a0\u00bb enable_bg_scale=\u00a0\u00bbtrue\u00a0\u00bb background_image_loading=\u00a0\u00bbdefault\u00a0\u00bb column_backdrop_filter=\u00a0\u00bbnone\u00a0\u00bb column_shadow=\u00a0\u00bbnone\u00a0\u00bb column_border_radius=\u00a0\u00bbnone\u00a0\u00bb column_link_target=\u00a0\u00bb_self\u00a0\u00bb column_position=\u00a0\u00bbdefault\u00a0\u00bb gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; width=\u00a0\u00bb1\/2&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb column_padding_type=\u00a0\u00bbdefault\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"<p>[vc_row type=\u00a0\u00bbin_container\u00a0\u00bb full_screen_row_position=\u00a0\u00bbmiddle\u00a0\u00bb column_margin=\u00a0\u00bb70px\u00a0\u00bb equal_height=\u00a0\u00bbyes\u00a0\u00bb content_placement=\u00a0\u00bbmiddle\u00a0\u00bb column_direction=\u00a0\u00bbdefault\u00a0\u00bb column_direction_tablet=\u00a0\u00bbdefault\u00a0\u00bb column_direction_phone=\u00a0\u00bbdefault\u00a0\u00bb scene_position=\u00a0\u00bbcenter\u00a0\u00bb top_padding=\u00a0\u00bb100px\u00a0\u00bb bottom_padding=\u00a0\u00bb5%\u00a0\u00bb top_padding_phone=\u00a0\u00bb30px\u00a0\u00bb constrain_group_5=\u00a0\u00bbyes\u00a0\u00bb bottom_padding_phone=\u00a0\u00bb30px\u00a0\u00bb text_color=\u00a0\u00bbdark\u00a0\u00bb text_align=\u00a0\u00bbleft\u00a0\u00bb row_border_radius=\u00a0\u00bbnone\u00a0\u00bb row_border_radius_applies=\u00a0\u00bbbg\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb shape_divider_color=\u00a0\u00bb#f7f8f9&Prime; shape_divider_position=\u00a0\u00bbbottom\u00a0\u00bb shape_divider_height=\u00a0\u00bb100px\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb gradient_type=\u00a0\u00bbdefault\u00a0\u00bb shape_type=\u00a0\u00bbstraight_section\u00a0\u00bb][vc_column column_padding=\u00a0\u00bbno-extra-padding\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb&#8230;<\/p>\n","protected":false},"author":1,"featured_media":631,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-629","cases","type-cases","status-publish","format-standard","has-post-thumbnail"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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