{"id":325,"date":"2026-07-08T15:36:52","date_gmt":"2026-07-08T07:36:52","guid":{"rendered":"https:\/\/www.rubri.cn\/indie_testimonial\/v2-case-15\/"},"modified":"2026-10-27T07:18:13","modified_gmt":"2026-10-26T23:18:13","slug":"alkali-recovery-viscose-fiber-5th","status":"publish","type":"indie_testimonial","link":"https:\/\/www.rubri.cn\/en\/indie_testimonial\/alkali-recovery-viscose-fiber-5th\/","title":{"rendered":"Electrodialysis (ED) for a 5t\/h alkali separation and reuse project at a viscose fiber company"},"content":{"rendered":"<p>Electrodialysis (ED) for a 5t\/h alkali separation and reuse project at a viscose fiber enterprise, showing the treatment scale and operating indicators of this technical route in similar projects.<\/p>\n<h2>Key indicators<\/h2>\n<ul>\n<li>Treatment capacity: 5t\/h<\/li>\n<li>Membrane area: 2178m2<\/li>\n<\/ul>\n<h2>Project background<\/h2>\n<p>Viscose fiber production generates large volumes of alkaline waste liquid with a relatively high sodium hydroxide concentration and organic substances such as hemicellulose.<\/p>\n<p>Direct discharge of the alkaline liquid not only wastes resources but also significantly increases the chemical costs of subsequent neutralization and wastewater treatment.<\/p>\n<p>The project objective is to separate reusable alkali from organic impurities so that the alkaline liquid can be returned to the production process for recycling.<\/p>\n<h2>Process route<\/h2>\n<ul>\n<li>With electrodialysis (ED) as the core, sodium ions and hydroxide ions enter the recovery side under a direct-current electric field to form alkaline liquid.<\/li>\n<li>The selective permeability of ion-exchange membranes retains macromolecular organic substances such as hemicellulose on the feed liquid side.<\/li>\n<li>Appropriate pretreatment and cleaning procedures are set for high-viscosity feed liquid to maintain long-term flux of the membrane stack.<\/li>\n<li>The recovered alkaline liquid is returned for use according to process proportions, and the residual feed liquid enters the subsequent treatment process.<\/li>\n<\/ul>\n<h2>Configuration scale<\/h2>\n<ul>\n<li>Treatment capacity: 5 t\/h.<\/li>\n<li>Membrane area: 2178 m\u00b2.<\/li>\n<\/ul>\n<h2>Illustrative materials<\/h2>\n<div class=\"iw-media-grid\">\n<figure><img decoding=\"async\" width=\"793\" height=\"515\" src=\"\/wp-content\/uploads\/2026\/09\/v2-56f8b49aa1eb.jpeg\" class=\"attachment-large size-large\" alt=\"\u7535\u6e17\u6790\u7528\u4e8e\u67d0\u7c98\u80f6\u7ea4\u7ef4\u4f01\u4e1a5t\/h\u5206\u79bb\u78b1\u56de\u7528\u9879\u76ee\" loading=\"lazy\" \/><figcaption>Diagram of electrodialysis (ED) for a 5t\/h alkali separation and reuse project at a viscose fiber enterprise<\/figcaption><\/figure>\n<\/div>","protected":false},"featured_media":645,"menu_order":150,"template":"","meta":{"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":""}}},"class_list":["post-325","indie_testimonial","type-indie_testimonial","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/indie_testimonial\/325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/indie_testimonial"}],"about":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/types\/indie_testimonial"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/media\/645"}],"wp:attachment":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/media?parent=325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}