{"id":7519,"date":"2025-07-31T21:41:41","date_gmt":"2025-07-31T21:41:41","guid":{"rendered":"https:\/\/geoambient.cat\/?post_type=referencies&#038;p=7519"},"modified":"2025-07-31T21:46:12","modified_gmt":"2025-07-31T21:46:12","slug":"rd-techniques-involving-hydraulic-barrier-mpe-air-sparging-biostimulation-for-the-remediation-of-hydrocarbon-solvent-contamination-at-a-car-body-manufacturing-plant-in-valladolid","status":"publish","type":"referencies","link":"https:\/\/geoambient.cat\/en\/referencies\/rd-techniques-involving-hydraulic-barrier-mpe-air-sparging-biostimulation-for-the-remediation-of-hydrocarbon-solvent-contamination-at-a-car-body-manufacturing-plant-in-valladolid\/","title":{"rendered":"R&#038;D techniques involving hydraulic barrier + MPE + air sparging + biostimulation for the remediation of hydrocarbon solvent contamination at a car body manufacturing plant in Valladolid."},"content":{"rendered":"\n<p><strong>Conceptual Framework<\/strong><strong><\/strong>&nbsp;<\/p>\n\n\n\n<p>This project addresses the decontamination of an area of over <strong>11,000 m\u00b2<\/strong>, affected by hydrocarbons in both soil and groundwater.&nbsp;<br>To achieve effective remediation, a <strong>multi-technique treatment<\/strong> is implemented, combining different decontamination methods to optimize the environmental improvement of the subsurface.&nbsp;<\/p>\n\n\n\n<p><strong>Applied Remediation Techniques<\/strong><strong><\/strong>&nbsp;<\/p>\n\n\n\n<p><strong>1. Multi-Phase Extraction (MPE) under High Vacuum<\/strong><strong><\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Allows simultaneous extraction of free phase, volatile compounds, and contaminated water.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Acts on different subsurface zones:\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Unsaturated zone (upper):<\/strong> Contaminant aspiration.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Capillary fringe:<\/strong> Removal of retained hydrocarbons.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Saturated zone (lower):<\/strong> Recovery of free and dissolved phase.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>2. Air Sparging<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Injection of air into the groundwater to:\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enhance the volatilization of dissolved hydrocarbons.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oxygenate the water, promoting natural biodegradation.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>3. Biostimulation<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Acceleration of biological contaminant degradation through the injection of:\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Treated water.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Specific nutrients.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oxygen-releasing agents to stimulate bacterial activity in the subsurface.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>4. Hydraulic Barriers<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Creation of a depression in the water table to:\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Control contaminant migration.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extract hydrocarbons in both free and dissolved phases.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Contaminant to Treat<\/strong><strong><\/strong>&nbsp;<\/p>\n\n\n\n<p>The <strong>main contaminant<\/strong> present in the soil and groundwater is a <strong>hydrocarbon solvent<\/strong>. This compound belongs to the hydrocarbon family and is found in different states:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Free phase:<\/strong> Accumulated on the surface of the groundwater.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dissolved phase:<\/strong> Mixed with groundwater.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Adsorbed in the soil:<\/strong> Retained within subsurface pores.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>This type of contaminant poses a <strong>significant environmental risk<\/strong>, affecting water quality and the stability of the underground ecosystem.&nbsp;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Final Objective<\/strong><strong><\/strong>&nbsp;<\/p>\n\n\n\n<p>Implement a combined strategy to achieve the <strong>effective reduction of contamination<\/strong>, optimizing efficiency and the remediation timeline for the affected subsurface.&nbsp;<\/p>\n","protected":false},"featured_media":5685,"template":"","categoria_referencia":[70],"class_list":["post-7519","referencies","type-referencies","status-publish","has-post-thumbnail","hentry","categoria_referencia-rdi"],"acf":[],"_links":{"self":[{"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/referencies\/7519","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/referencies"}],"about":[{"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/types\/referencies"}],"version-history":[{"count":4,"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/referencies\/7519\/revisions"}],"predecessor-version":[{"id":7524,"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/referencies\/7519\/revisions\/7524"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/media\/5685"}],"wp:attachment":[{"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/media?parent=7519"}],"wp:term":[{"taxonomy":"categoria_referencia","embeddable":true,"href":"https:\/\/geoambient.cat\/en\/wp-json\/wp\/v2\/categoria_referencia?post=7519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}