{"id":726,"date":"2026-02-08T18:48:00","date_gmt":"2026-02-08T18:48:00","guid":{"rendered":"https:\/\/opv.cz\/?p=726"},"modified":"2026-02-09T07:15:30","modified_gmt":"2026-02-09T07:15:30","slug":"pragovka-2018-2021","status":"publish","type":"post","link":"https:\/\/opv.cz\/en\/pragovka-2018-2021\/","title":{"rendered":"PRAGOVKA (2018\u20132021)"},"content":{"rendered":"<h3 class=\"wp-block-heading\"><strong>Remediation of hexavalent chromium contamination<\/strong><\/h3>\n\n\n\n<p>The <strong>PRAGOVKA<\/strong> site in Prague is a significant industrial brownfield site contaminated with <strong>hexavalent chromium (Cr\u2076\u207a)<\/strong> and other heavy metals resulting from historical industrial production. The contamination posed a risk to groundwater and the future use of the site.<\/p>\n\n\n\n<p>The OPV project focused on stabilizing the site and reducing environmental risks while preserving the possibility of further development of the location.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Solution<\/strong><\/h3>\n\n\n\n<p>Based on a detailed risk analysis and mathematical modeling, <strong>a unique automated remediation system was designed<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>application of <strong>in-situ high-pressure grouting<\/strong>,<\/li>\n\n\n\n<li>chemical reduction of hexavalent chromium to a less mobile form,<\/li>\n\n\n\n<li>monitoring of the remediation process using monitoring wells.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Result<\/strong><\/h3>\n\n\n\n<p>There was a significant reduction or elimination of contamination in both the saturated and unsaturated zones of the rock environment. The area was stabilized and prepared for further safe use.<\/p>\n\n\n\n<div class=\"wp-block-envira-envira-gallery\"><div id=\"envira-gallery-wrap-857\" class=\"envira-gallery-wrap envira-gallery-theme-base envira-lightbox-theme-base\" itemscope itemtype=\"https:\/\/schema.org\/ImageGallery\"><div data-row-height=\"150\" data-gallery-theme=\"normal\" id=\"envira-gallery-857\" class=\"envira-gallery-public envira-gallery-justified-public envira-gallery-0-columns envira-clear enviratope envira-gallery-css-animations\" data-envira-columns=\"0\"><div id=\"envira-gallery-item-729\" class=\"envira-gallery-item enviratope-item envira-gallery-item-1 envira-lazy-load\" style=\"padding-left: 1px; padding-bottom: 1px; padding-right: 1px;\"  itemscope itemtype=\"https:\/\/schema.org\/ImageObject\"><div class=\"envira-gallery-item-inner\"><div class=\"envira-gallery-position-overlay  envira-gallery-top-left\"><\/div><div class=\"envira-gallery-position-overlay  envira-gallery-top-right\"><\/div><div class=\"envira-gallery-position-overlay  envira-gallery-bottom-left\"><\/div><div class=\"envira-gallery-position-overlay  envira-gallery-bottom-right\"><\/div><a href=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.09.png\" class=\"envira-gallery-857 envira-gallery-link\" rel=\"enviragallery857\" title=\"Sni\u0301mek obrazovky 2026-01-30 v&nbsp;16.40.09\" data-envira-caption=\"Sni\u0301mek obrazovky 2026-01-30 v&nbsp;16.40.09\" data-envira-retina=\"\" data-thumbnail=\"\"  itemprop=\"contentUrl\"><img decoding=\"async\" id=\"envira-gallery-image-729\" class=\"envira-gallery-image envira-gallery-image-1 envira-normal envira-lazy\" data-envira-index=\"1\" src=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.09-783x1024.png\" data-envira-src=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.09-783x1024.png\" data-envira-gallery-id=\"857\" data-envira-item-id=\"729\" data-envira-caption=\"Sni\u0301mek obrazovky 2026-01-30 v&nbsp;16.40.09\" alt=\"\" title=\"Sni\u0301mek obrazovky 2026-01-30 v\u00a016.40.09\"  itemprop=\"thumbnailUrl\" data-envira-srcset=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.09-783x1024.png 400w,https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.09-783x1024.png 2x\" data-envira-width=\"229\" data-envira-height=\"300\" srcset=\"data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/\/\/\/\/yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-safe-src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/\/\/\/\/yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" \/><\/a><\/div><\/div><div id=\"envira-gallery-item-728\" class=\"envira-gallery-item enviratope-item envira-gallery-item-2 envira-lazy-load\" style=\"padding-left: 1px; padding-bottom: 1px; padding-right: 1px;\"  itemscope itemtype=\"https:\/\/schema.org\/ImageObject\"><div class=\"envira-gallery-item-inner\"><div class=\"envira-gallery-position-overlay  envira-gallery-top-left\"><\/div><div class=\"envira-gallery-position-overlay  envira-gallery-top-right\"><\/div><div class=\"envira-gallery-position-overlay  envira-gallery-bottom-left\"><\/div><div class=\"envira-gallery-position-overlay  envira-gallery-bottom-right\"><\/div><a href=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.17.png\" class=\"envira-gallery-857 envira-gallery-link\" rel=\"enviragallery857\" title=\"Sni\u0301mek obrazovky 2026-01-30 v&nbsp;16.40.17\" data-envira-caption=\"Sni\u0301mek obrazovky 2026-01-30 v&nbsp;16.40.17\" data-envira-retina=\"\" data-thumbnail=\"\"  itemprop=\"contentUrl\"><img decoding=\"async\" id=\"envira-gallery-image-728\" class=\"envira-gallery-image envira-gallery-image-2 envira-normal envira-lazy\" data-envira-index=\"2\" src=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.17.png\" data-envira-src=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.17.png\" data-envira-gallery-id=\"857\" data-envira-item-id=\"728\" data-envira-caption=\"Sni\u0301mek obrazovky 2026-01-30 v&nbsp;16.40.17\" alt=\"\" title=\"Sni\u0301mek obrazovky 2026-01-30 v\u00a016.40.17\"  itemprop=\"thumbnailUrl\" data-envira-srcset=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.17.png 400w,https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.17.png 2x\" data-envira-width=\"262\" data-envira-height=\"300\" srcset=\"data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/\/\/\/\/yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-safe-src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/\/\/\/\/yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" \/><\/a><\/div><\/div><\/div><\/div><noscript><img decoding=\"async\" src=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.09.png\" alt=\"\" \/><img decoding=\"async\" src=\"https:\/\/opv.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-01-30-v-16.40.17.png\" alt=\"\" \/><\/noscript><\/div>","protected":false},"excerpt":{"rendered":"<p>Sanace kontaminace \u0161estimocn\u00fdm chromem Are\u00e1l PRAGOVKA v Praze p\u0159edstavuje v\u00fdznamn\u00fd pr\u016fmyslov\u00fd brownfield zat\u00ed\u017een\u00fd dlouhodobou kontaminac\u00ed \u0161estimocn\u00fdm chromem (Cr\u2076\u207a) a dal\u0161\u00edmi t\u011b\u017ek\u00fdmi kovy, vzniklou p\u0159i historick\u00e9 pr\u016fmyslov\u00e9 v\u00fdrob\u011b. Kontaminace p\u0159edstavovala riziko pro podzemn\u00ed vody i budouc\u00ed vyu\u017eit\u00ed \u00fazem\u00ed. Projekt OPV byl zam\u011b\u0159en na stabilizaci \u00fazem\u00ed a sn\u00ed\u017een\u00ed ekologick\u00fdch rizik p\u0159i zachov\u00e1n\u00ed mo\u017enosti dal\u0161\u00edho rozvoje lokality. \u0158e\u0161en\u00ed [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":728,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-726","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projekty"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/posts\/726","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/comments?post=726"}],"version-history":[{"count":2,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/posts\/726\/revisions"}],"predecessor-version":[{"id":858,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/posts\/726\/revisions\/858"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/media\/728"}],"wp:attachment":[{"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/media?parent=726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/categories?post=726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/opv.cz\/en\/wp-json\/wp\/v2\/tags?post=726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}