{"id":183,"date":"2017-01-24T17:47:14","date_gmt":"2017-01-24T16:47:14","guid":{"rendered":"https:\/\/gwpolitoblog.wordpress.com\/?page_id=183"},"modified":"2020-10-26T11:55:24","modified_gmt":"2020-10-26T10:55:24","slug":"whpa","status":"publish","type":"page","link":"https:\/\/areeweb.polito.it\/ricerca\/groundwater\/it\/research\/whpa\/","title":{"rendered":"Aree di salvaguardia dei pozzi"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"183\" class=\"elementor elementor-183\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4ffec5b elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4ffec5b\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;shape_divider_bottom&quot;:&quot;mountains&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 1000 100\" preserveaspectratio=\"none\">\n\t<path class=\"elementor-shape-fill\" opacity=\"0.33\" d=\"M473,67.3c-203.9,88.3-263.1-34-320.3,0C66,119.1,0,59.7,0,59.7V0h1000v59.7 c0,0-62.1,26.1-94.9,29.3c-32.8,3.3-62.8-12.3-75.8-22.1C806,49.6,745.3,8.7,694.9,4.7S492.4,59,473,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" opacity=\"0.66\" d=\"M734,67.3c-45.5,0-77.2-23.2-129.1-39.1c-28.6-8.7-150.3-10.1-254,39.1 s-91.7-34.4-149.2,0C115.7,118.3,0,39.8,0,39.8V0h1000v36.5c0,0-28.2-18.5-92.1-18.5C810.2,18.1,775.7,67.3,734,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" d=\"M766.1,28.9c-200-57.5-266,65.5-395.1,19.5C242,1.8,242,5.4,184.8,20.6C128,35.8,132.3,44.9,89.9,52.5C28.6,63.7,0,0,0,0 h1000c0,0-9.9,40.9-83.6,48.1S829.6,47,766.1,28.9z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b22435e\" data-id=\"b22435e\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-432d30f elementor-widget elementor-widget-text-editor\" data-id=\"432d30f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Uno dei principali strumenti adottati per la tutela delle acque destinate al consumo umano \u00e8 rappresentato dalla delimitazione delle aree di salvaguardia, da realizzarsi in prossimit\u00e0 di opere di captazione. La definizione delle aree di salvaguardia (protezione statica), con l\u2019imposizione dei vincoli che limitino l\u2019utilizzo del territorio, non risolve completamente il problema della protezione delle opere di captazione idropotabile, ma si limita ad escludere la possibilit\u00e0 che un processo di inquinamento si inneschi all\u2019interno delle aree di rispetto cos\u00ec definite. Per assicurare una protezione anche da fenomeni di contaminazione provenienti dall\u2019esterno, le aree di salvaguardia dei pozzi sono solitamente associate a sistemi di protezione dinamica richiedenti la creazione di una rete di monitoraggio disposta lungo il perimetro delle aree di rispetto sulla quale programmare un periodico controllo della qualit\u00e0 della falda interessata dalle opere di captazione.<\/p><p>Le aree di salvaguardia dei pozzi possono essere definite secondo un criterio geometrico (ad esempio definendo l\u2019area in modo arbitrario, stabilendo un vincolo di una superficie circolare intono al pozzo da proteggere) o secondo un criterio cronologico. Quest\u2019ultimo prende in considerazione la tipologia di acquifero e i suoi parametri idrodinamici, in particolare usa la velocit\u00e0 di deflusso delle acque sotterranee per delimitare le aree di salvaguardia in base ai tempi di propagazione di un determinato inquinante.<\/p><p>Le aree di salvaguardia dei pozzi sono solitamente determinate dal calcolo della zona di cattura del pozzo e delle isocrone lungo le traiettorie di flusso usando metodi deterministici o probabilistici. Entrambi i metodi sono studiati e applicati dal GW Group. I metodi deterministici consistono nel calcolo delle linee di flusso nell\u2019acquifero (particle tracking inverso) tenendo conto solo dei fenomeni advettivi, mentre le possibili zone di cattura sono studiate usando un modello probabilistico inverso basato sull\u2019operatore aggiunto dell\u2019equazione di trasporto dei soluti nelle acque di falda.<\/p><p>Per quanto concerne le zone di cattura deterministiche, il <a href=\"https:\/\/areeweb.polito.it\/ricerca\/groundwater\/it\/software\/apa\/\">modello APA<\/a>, una metodologia per la delimitazione automatica delle aree di salvaguardia tramite il criterio cronologico. L\u2019algoritmo \u00e8 un miglioramento del particle tracking inverso: usa particelle non uniformemente distanziate attorno ai pozzi di pompaggio ed include un algoritmo di perimetrazione per la circoscrizione automatica della zona di cattura (Tosco et al, 2008).<\/p><p>Anche se l\u2019algoritmo APA \u00e8 stato inizialmente sviluppato come strumento per una circoscrizione automatica rapida e accurata delle aree di salvaguardia dei pozzi, il GW Group l\u2019ha applicato per la prima volta anche ai sistemi Pump &amp; Treat per il controllo idraulico del plume di contaminazione in un acquifero confinato, dimostrando la sua efficacia nella delineazione delle zone di cattura. Questo approccio permette di progettare sistemi Pump &amp; Treat pi\u00f9 efficienti, in quanto l\u2019area di cattura del pozzo \u00e8 in grado di assicurare il contenimento del flusso advettivo e dispersivo del contaminante.<\/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<div class=\"elementor-element elementor-element-eae4e02 elementor-widget elementor-widget-heading\" data-id=\"eae4e02\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Bibliografia<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83c9f9a elementor-widget elementor-widget-text-editor\" data-id=\"83c9f9a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t\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<div class=\"elementor-element elementor-element-888d511 elementor-widget elementor-widget-text-editor\" data-id=\"888d511\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>TOSCO T., SETHI R. (2010), Comparison between backward probability and particle tracking methods for the delineation of well head protection areas, Environmental Fluid Mechanics, 10, pp 77-90, DOI: 10.1007\/s10652-009-9139-2 <a href=\"http:\/\/areeweb.polito.it\/ricerca\/groundwater\/wp-content\/uploads\/2017\/01\/2010_tosco-and-sethi_env-flu-mech.pdf\" target=\"_blank\" rel=\"noopener\">pdf<\/a><\/p><p>TOSCO T., DI MOLFETTA A., SETHI R. (2010), Automatic delineation of capture zones for pump and treat systems: A case study in Piedmont, Italy, Ground Water Monitoring and Remediation, 30(2), pp 46-52, DOI: 10.1111\/j.1745-6592.2010.01276.x <a href=\"http:\/\/areeweb.polito.it\/ricerca\/groundwater\/wp-content\/uploads\/2017\/01\/2010_tosco-et-al_gwmr.pdf\" target=\"_blank\" rel=\"noopener\">pdf<\/a><\/p><p>TOSCO T., DI MOLFETTA A., SETHI R. (2010), Automatic delineation of capture zones for pump and treat systems: A case study in Piedmont, Italy, Ground Water Monitoring and Remediation, 30(2), pp 46-52, DOI: 10.1111\/j.1745-6592.2010.01276.x <a href=\"http:\/\/areeweb.polito.it\/ricerca\/groundwater\/wp-content\/uploads\/2017\/01\/2008_tosco-et-al_wrr.pdf\" target=\"_blank\" rel=\"noopener\">pdf<\/a><\/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<div class=\"elementor-element elementor-element-3fb33be elementor-widget elementor-widget-spacer\" data-id=\"3fb33be\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>One of the main approaches employed for the protection of subsurface water sources for human consumption is the definition of well head protection areas (WHPAs) around the abstraction points, where land-use restriction and safeguard measures must be adopted to ensure the preservation of water quality (static protection). To ensure the [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":1438,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Wellhead protection areas - Groundwater Engineering Research Group<\/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:\/\/areeweb.polito.it\/ricerca\/groundwater\/it\/research\/whpa\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wellhead protection areas - Groundwater Engineering Research Group\" \/>\n<meta property=\"og:description\" content=\"One of the main approaches employed for the protection of subsurface water sources for human consumption is the definition of well head protection areas (WHPAs) around the abstraction points, where land-use restriction and safeguard measures must be adopted to ensure the preservation of water quality (static protection). 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