{"id":527,"date":"2026-07-08T15:36:50","date_gmt":"2026-07-08T15:36:50","guid":{"rendered":""},"modified":"2026-10-15T15:09:42","modified_gmt":"2026-10-15T07:09:42","slug":"v2-application-ed-3","status":"publish","type":"iw_application","link":"https:\/\/www.rubri.cn\/en\/application\/v2-application-ed-3\/","title":{"rendered":"Desalination of integrated electroplating\/chemical\/printing and dyeing wastewater"},"content":{"rendered":"

III. ED \u2014 Sample application scenarios for standard electrodialysis (ED)<\/h2>\n

3.1 Electrodialysis (ED) treatment of electroplating wastewater<\/p>\n

Technical route: the electroplating wastewater separation system follows the principles of clean and contaminated stream separation and staged treatment. Wastewater is collected separately into five categories: cyanide-containing, chromium-containing, nickel-containing, copper-containing, and combined wastewater. After alkali dosing, flocculation, sedimentation, and filtration, the raw water is pH-adjusted, pretreated by ultrafiltration, and then enters electrodialysis (ED) for concentration. The diluate is treated by reverse osmosis to produce pure water, while the concentrate reaches 15% and then enters MVR evaporation to achieve zero liquid discharge (ZLD).<\/p>\n

Principle overview: under a DC electric field, the selective permeability of homogeneous ion-exchange membranes is used to drive anions and cations in the solution to migrate directionally toward the corresponding electrodes, achieving solution concentration and desalination.<\/p>\n

Figure 3 - Electroplating wastewater project for an enterprise in Xi'an<\/p>\n

Illustrative materials<\/h2>\n
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Diagram of desalination for combined wastewater from electroplating, chemical, and printing and dyeing processes<\/figcaption><\/figure>\n
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Diagram of desalination for combined wastewater from electroplating, chemical, and printing and dyeing processes<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

3.1 Electrodialysis (ED) treatment of electroplating wastewater<\/p>","protected":false},"featured_media":643,"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":""}},"footnotes":""},"iw_technology":[180],"iw_industry":[242],"class_list":["post-527","iw_application","type-iw_application","status-publish","has-post-thumbnail","hentry","iw_technology-ed","iw_industry-v2-industry-d1347ebf27"],"_links":{"self":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/iw_application\/527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/iw_application"}],"about":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/types\/iw_application"}],"version-history":[{"count":1,"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/iw_application\/527\/revisions"}],"predecessor-version":[{"id":640,"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/iw_application\/527\/revisions\/640"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/media\/643"}],"wp:attachment":[{"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/media?parent=527"}],"wp:term":[{"taxonomy":"iw_technology","embeddable":true,"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/iw_technology?post=527"},{"taxonomy":"iw_industry","embeddable":true,"href":"https:\/\/www.rubri.cn\/en\/wp-json\/wp\/v2\/iw_industry?post=527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}