{"id":20637,"date":"2019-12-05T13:10:16","date_gmt":"2019-12-05T13:10:16","guid":{"rendered":"https:\/\/services.jacobi.net\/chromium-removal-from-water-with-ion-exchange-resins\/"},"modified":"2025-09-19T03:16:22","modified_gmt":"2025-09-19T03:16:22","slug":"krom-avlagsnande-fran-vatten-med-jonbyte-resin","status":"publish","type":"post","link":"https:\/\/services.jacobi.net\/sv\/krom-avlagsnande-fran-vatten-med-jonbyte-resin\/","title":{"rendered":"Krom avlagsnande fran vatten med jonbyte resin."},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"20637\" class=\"elementor elementor-20637\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7111700c e-flex e-con-boxed e-con e-parent\" data-id=\"7111700c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a497bb9 elementor-widget elementor-widget-text-editor\" data-id=\"2a497bb9\" data-element_type=\"widget\" data-e-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\t<h3>Var kommer krom ifr\u00e5n?<\/h3><p>Krom, som \u00e4r j\u00e4mnt f\u00f6rdelat i jordskorpan, utvinns fr\u00e5n krommalmer, ett j\u00e4rnkromoxidmineral (FeCr203). Det hexavalenta kromet (Cr+VI) \u00e4r mycket giftigt och har b\u00e5de mutagena och cancerframkallande effekter, i motsats till det trivalenta element\u00e4ra kromet (Cr+III), som \u00e4r ett viktigt n\u00e4rings\u00e4mne.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-267412d4 e-flex e-con-boxed e-con e-parent\" data-id=\"267412d4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2b713f13 elementor-widget elementor-widget-text-editor\" data-id=\"2b713f13\" data-element_type=\"widget\" data-e-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\t<p style=\"text-align: center;\"><em>Figur 1: Kromitmalm<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-469776df elementor-widget elementor-widget-image\" data-id=\"469776df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"428\" height=\"408\" src=\"https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/Chromite-Ore.png\" class=\"attachment-large size-large wp-image-39217\" alt=\"\" srcset=\"https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/Chromite-Ore.png 428w, https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/Chromite-Ore-300x286.png 300w\" sizes=\"(max-width: 428px) 100vw, 428px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4dfa3c11 e-flex e-con-boxed e-con e-parent\" data-id=\"4dfa3c11\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3576ab3d elementor-widget elementor-widget-text-editor\" data-id=\"3576ab3d\" data-element_type=\"widget\" data-e-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\t<p>Krom har anv\u00e4nts i m\u00e5nga \u00e5r i olika industriella processer som korrosionsinhibitor, pigment och f\u00e4rgfixeringsmedel. (T ex i kyltorn, galvanisering och inom textilindustrin). Anv\u00e4ndningen av krombaserade f\u00f6reningar tenderar att minska drastiskt p\u00e5 grund av h\u00e4lso- och milj\u00f6h\u00e4nsyn. Grundvatten i f\u00f6rorenade omr\u00e5den kan fortfarande uppvisa koncentrationer \u00f6ver V\u00e4rldsh\u00e4lsoorganisationens (WHO) riktlinje om 50 \u00b5g \/ l som totalt krom.<\/p><p>Pourbaix- eller potential \/ pH-diagrammet i figur 2 av krom visar kromspeciet i vatten. Omr\u00e5det mellan de orange prickade linjerna representerar stabilitetszonen f\u00f6r vatten. Figur 1 visar att kromspeciet i vatten domineras av kromat (Cr02\u00b2), dikromater (Cr202 ^) och det trivalenta element\u00e4ra krom (Cr3). Kromat (CrO ^ ^) och dikromat (Cr202 ^) \u00e4r oxyanjoner av det hexavalenta kromatet (Cr).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-751d13b3 e-flex e-con-boxed e-con e-parent\" data-id=\"751d13b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-707af58 elementor-widget elementor-widget-text-editor\" data-id=\"707af58\" data-element_type=\"widget\" data-e-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\t<p style=\"text-align: center;\"><em>Figur 2 Pourbaix- eller potentiellt \/ pH-diagram f\u00f6r kromspecier<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1944be28 elementor-widget elementor-widget-image\" data-id=\"1944be28\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"682\" height=\"447\" src=\"https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/chromium-from-water.jpg\" class=\"attachment-large size-large wp-image-39225\" alt=\"\" srcset=\"https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/chromium-from-water.jpg 682w, https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/chromium-from-water-300x197.jpg 300w, https:\/\/services.jacobi.net\/wp-content\/uploads\/2021\/06\/chromium-from-water-595xh.jpg 595w\" sizes=\"(max-width: 682px) 100vw, 682px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1445a0ca e-flex e-con-boxed e-con e-parent\" data-id=\"1445a0ca\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-70308e3e elementor-widget elementor-widget-text-editor\" data-id=\"70308e3e\" data-element_type=\"widget\" data-e-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\t<h3>Hur tas krom ur vattnet?<\/h3><p>N\u00e4r krom \u00e4r n\u00e4rvarande som anjoniska komplex som kromat (CrO\u2084\u00b2\u00af) eller dikromat (Cr\u2082O\u2087\u00b2\u00af), kan ett starkt basanjon (SBA) -harts, typ 1 ,s\u00e5som Resinex\u2122 A-4, anv\u00e4ndas med en j\u00e4mf\u00f6rbar effektivitet som en kelatisk resin. Den kvatern\u00e4ra aminogruppen hos Resinex\u2122 A-4 uppvisar en mycket h\u00f6g affinitet f\u00f6r kromat- och dikromatjoner. Resinet kan inte regenereras. Avl\u00e4gsningsmekanismen beskrivs genom reaktionen nedan:<\/p><p>2 R-N+(CH\u2083)\u2083 Cl- + CrO\u2084\u00b2\u00af \u2192 2 [R-N+(CH\u2083)\u2083] CrO\u2084\u00b2- + 2 Cl\u00af<\/p><p>2 R-N+(CH\u2083)\u2083 Cl- + Cr\u2082O\u2087\u00b2\u00af \u2192 2 [R-N+(CH\u2083)\u2083] Cr\u2082O\u2087\u00b2+ 2 Cl\u00af<\/p><p>Med en inloppskoncentration under 200mg\/l f\u00f6rv\u00e4ntas Resinex\u2122 A-4s driftskapacitet vara +\/- 12 g uttryckt som Cr per liter jonbytarresin (+\/- 12 kg \/ m\u00b3).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5638ee67 e-flex e-con-boxed e-con e-parent\" data-id=\"5638ee67\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3845c2a6 elementor-widget elementor-widget-text-editor\" data-id=\"3845c2a6\" data-element_type=\"widget\" data-e-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\t<h3>Rekommenderade driftsf\u00f6rh\u00e5llanden f\u00f6r kromavl\u00e4gsning<\/h3><p>Ett AquaFlow\u2122 kan anv\u00e4ndas f\u00f6r avl\u00e4gsnande av krom vid en kontakttid p\u00e5 minst sex minuter, men vanligtvis anv\u00e4nds tv\u00e5 AquaFlow\u2122 i serie, med en typisk fl\u00f6deshastighet per filter p\u00e5 10-30 b\u00e4ddvolym per timme (BV \/ h).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4675092e e-flex e-con-boxed e-con e-parent\" data-id=\"4675092e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-430cb55a elementor-widget elementor-widget-text-editor\" data-id=\"430cb55a\" data-element_type=\"widget\" data-e-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\t<h3>Hur utformar jag ett kromavl\u00e4gsningssystem?<\/h3><p>Anta ett f\u00f6rorenat grundvatten med 0,5mg\/l som Cr kromat (Cr +VI) som m\u00e5ste renas med f\u00f6ljande egenskaper:<\/p><ul><li>Genomsnittligt fl\u00f6de p\u00e5 30 m\u00b3 \/ h<\/li><li>Kontinuerlig drift 24\/7<\/li><li>Kromkoncentrationer p\u00e5 0,5mg\/l = 0,5 g\/m\u00b3<\/li><li>\u00c5rligen med kromf\u00f6rorenat grundvatten 30 m\u00b3 \/ h x 8600 timmar per \u00e5r = 258 000 m\u00b3<\/li><li>\u00c5rlig kapacitet f\u00f6r Kromupptag: 0,5 g\/m\u00b3 x 258 000 m\u00b3 = 129 000 g = 129 kg krom<\/li><\/ul><p>Detta ger en genomsnittlig kapacitet p\u00e5 12 kg Cr \/ m\u00b3 Resinex\u2122 A-4 en f\u00f6rbrukning p\u00e5 cirka 11 m\u00b3 Resinex\u2122 A-4 per \u00e5r. Ett AquaFlow\u2122 kan sedan v\u00e4ljas ut fr\u00e5n v\u00e5ra mobila filter f\u00f6r att erh\u00e5lla \u00f6nskad drifttid mellan bytena.<\/p><p>Det rekommenderas alltid att du kontaktar v\u00e5r tekniska expert f\u00f6r design av ett system f\u00f6r borttagning av tungmetaller eftersom andra metalljoner kan st\u00f6ra den ber\u00e4knade f\u00f6rbrukningen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Var kommer krom ifr\u00e5n? Krom, som \u00e4r j\u00e4mnt f\u00f6rdelat i jordskorpan, utvinns fr\u00e5n krommalmer, ett j\u00e4rnkromoxidmineral (FeCr203). Det hexavalenta kromet (Cr+VI) \u00e4r mycket giftigt och har b\u00e5de mutagena och cancerframkallande effekter, i motsats till det trivalenta element\u00e4ra kromet (Cr+III), som \u00e4r ett viktigt n\u00e4rings\u00e4mne. Figur 1: Kromitmalm Krom har anv\u00e4nts i m\u00e5nga \u00e5r i olika&hellip;<\/p>\n","protected":false},"author":32,"featured_media":39226,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3708],"tags":[],"class_list":["post-20637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vattenbehandling-sv"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Krom avlagsnande fran vatten med jonbyte resin. | Jacobi Services<\/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:\/\/services.jacobi.net\/sv\/krom-avlagsnande-fran-vatten-med-jonbyte-resin\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Krom avlagsnande fran vatten med jonbyte resin.\" \/>\n<meta property=\"og:description\" content=\"Var kommer krom ifr\u00e5n? Krom, som \u00e4r j\u00e4mnt f\u00f6rdelat i jordskorpan, utvinns fr\u00e5n krommalmer, ett j\u00e4rnkromoxidmineral (FeCr203). 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