Fr\u00e1 1968 \u00feegar vatnslei\u00f0sla var fyrst tengd \u00e1 milli Vestmannaeyja og fastalandsins hafa Eyjab\u00faar reitt sig \u00e1 a\u00f0gengi a\u00f0 ferskvatni \u00ed gegnum plastlei\u00f0slur sem liggja \u00e1 hafsbotni. Vestmannaeyingar og atvinnul\u00edfi\u00f0 \u00e1 Eyjunni voru \u00fe\u00f3 \u00f3\u00feyrmilega minntir \u00e1 \u00fea\u00f0 \u00f3\u00f6ryggi sem felst af \u00fev\u00ed a\u00f0 vera h\u00e1\u00f0ir sl\u00edkri tengingu var\u00f0andi l\u00edfsnau\u00f0synjar 2023 \u00feegar skemmdir ur\u00f0u \u00e1 lei\u00f0slunni. \u00cd framhaldi fj\u00e1rfestu fyrirt\u00e6ki \u00e1 sv\u00e6\u00f0inu \u00ed vatnshreinsib\u00fana\u00f0i sem framleitt getur ferskvatn \u00far sj\u00f3. Vinnslust\u00f6\u00f0in \u00ed Vestmannaeyjum fj\u00e1rfesti me\u00f0al annast \u00ed sl\u00edkum b\u00fana\u00f0i, og \u00ed framhaldi kom upp s\u00fa hugmynd hvort ekki v\u00e6ri h\u00e6gt a\u00f0 n\u00fdta \u00fe\u00e1 hli\u00f0arstrauma sem til ver\u00f0a vi\u00f0 ferskvatnsframlei\u00f0sluna. En vatnshreinsist\u00f6\u00f0in s\u00edar steinefni og \u00f3hreinindi \u00far sj\u00f3num, \u00feannig a\u00f0 eftir ver\u00f0ur hreint vatn. Me\u00f0al \u00feeirra steinefna sem s\u00edast fr\u00e1 er salt, en Vinnslust\u00f6\u00f0in er \u00e1 sama t\u00edma a\u00f0 flytja inn t\u00f6luvert magn af salti til saltfiskframlei\u00f0slu. \u00dea\u00f0 l\u00e1 \u00fev\u00ed beinast vi\u00f0 a\u00f0 kanna m\u00f6guleikann \u00e1 a\u00f0 n\u00fdta saltp\u00e6kil sem fellur til vi\u00f0 ferskvatnsframlei\u00f0sluna fyrir saltfiskvinnslu. Vinnslust\u00f6\u00f0in f\u00e9kk \u00fev\u00ed Mat\u00eds me\u00f0 s\u00e9r \u00ed li\u00f0 til a\u00f0 kanna f\u00fdsileika \u00feess, og fengu auk \u00feess stu\u00f0ning fr\u00e1 L\u00d3U sj\u00f3\u00f0num til a\u00f0 fj\u00e1rmagna hluta af verkefninu. Markmi\u00f0 verkefnisins var a\u00f0 kanna f\u00fdsileika \u00feess a\u00f0 n\u00fdta salt fr\u00e1 ferskvatnsframlei\u00f0slunni til saltfiskframlei\u00f0slu m.t.t. matv\u00e6la\u00f6ryggis, afkasta, kostna\u00f0ar og sj\u00e1lfb\u00e6rni.<\/p>\n\n\n\n
Helstu ni\u00f0urst\u00f6\u00f0ur s\u00fdndu a\u00f0 h\u00e6gt er a\u00f0 nota p\u00e6kilinn (RO-brine) \u00ed fors\u00f6ltun \u00e1n \u00feess a\u00f0 sker\u00f0a g\u00e6\u00f0i v\u00f6runnar, lit e\u00f0a s\u00fdrustig (pH). Vinnslutilraunirnar s\u00fdndu samb\u00e6rilegar ni\u00f0urst\u00f6\u00f0ur hva\u00f0 var\u00f0ar saltmagn \u00ed lokaafur\u00f0inni og engin neikv\u00e6\u00f0 \u00e1hrif \u00e1 afk\u00f6stin. \u00cd heildina g\u00e6ti notkun \u00feessa p\u00e6kils dregi\u00f0 verulega \u00far saltinnflutningi til saltfiskframlei\u00f0slu, sem g\u00e6ti leitt til umtalsver\u00f0rar l\u00e6kkunar \u00e1 kostna\u00f0i vi\u00f0 framlei\u00f0slu saltfisks. Enn fremur s\u00fdndi vistferilsmat (LCA) fram \u00e1 a\u00f0 me\u00f0 \u00fev\u00ed a\u00f0 n\u00fdta p\u00e6kilinn m\u00e1 draga verulega \u00far umhverfis\u00e1hrifum framlei\u00f0slunnar, samanbori\u00f0 vi\u00f0 hef\u00f0bundinn p\u00e6kil sem framleiddur er \u00far innfluttu salti.
S\u00fdnt hefur \u00fev\u00ed veri\u00f0 fram \u00e1 \u00ed verkefninu a\u00f0 notkun saltp\u00e6kils sem fellur til vi\u00f0 vatnshreinsun s\u00e9 t\u00e6knilega raunh\u00e6fur, hagkv\u00e6mur og sj\u00e1lfb\u00e6rari valkostur vi\u00f0\u00a0 saltfiskframlei\u00f0slu.
_____
Since 1968, when a freshwater pipeline was first connected between the Westman Islands and the mainland, the islanders have relied on access to freshwater through plastic pipelines that lie on the seabed. The inhabitants of the Islands and its industries were harshly reminded of the insecurity of being dependent on such a connection for their essential needs in 2023 when the pipeline was damaged. Subsequently, companies in the area invested in water treatment plants that can produce freshwater from seawater. Westmann islands largest seafood company and the largest workplace, Vinnslust\u00f6\u00f0in (VSV) invested in such equipment, and subsequently the idea arose of whether it would be possible to utilize the side streams that are created during the production of freshwater. But the water treatment plant filters minerals and impurities from the sea, so that only clean water remains. Among the minerals that are filtered out is salt, but VSV is at the same time importing considerable amounts of salt for its saltfish production. The focus was therefore on investigating the possibility of using the salt brine that is generated from the freshwater production for saltfish processing. VSV therefore brought Mat\u00eds on board to investigate its feasibility and also received support from the L\u00d3U Fund to finance part of the project. The aim of the project was to investigate the feasibility of using salt from freshwater production for saltfish production in terms of food safety, yield, cost and sustainability.<\/p>\n\n\n\n
The main results showed that the brine can be used in pre-salting without compromising the quality of the product, colour or pH. The processing experiments showed comparable results in terms of salt content in the final product and no negative impact on performance or yield. Overall, the use of the brine could substantially reduce salt imports for saltfish production, which could lead to a significant reduction in the cost of producing salted fish. Furthermore, a life cycle assessment (LCA) showed that by utilizing the brine, the environmental impact of production can be substantially reduced, compared to traditional brine produced from imported salt.
The project has therefore demonstrated that the use of salt brine generated during water purification process using reverse osmosis is a technically feasible, economical and more sustainable alternative to current practises for saltfish production.
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Fr\u00e1 1968 \u00feegar vatnslei\u00f0sla var fyrst tengd \u00e1 milli Vestmannaeyja og fastalandsins hafa Eyjab\u00faar reitt sig \u00e1 a\u00f0gengi a\u00f0 ferskvatni […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[2568,2469,2569,2565,2566,2564,663,2570,2567],"class_list":["post-55930","post","type-post","status-publish","format-standard","hentry","category-skyrsla","tag-brine","tag-lca","tag-saltfish-production","tag-saltfiskframleidsla","tag-saltpaekill","tag-vatnshreinsistod","tag-vistferilsgreining","tag-water-re-use","tag-water-treatment-plant"],"acf":[],"yoast_head":"\n