{"id":338,"date":"2026-07-08T15:36:53","date_gmt":"2026-07-08T07:36:53","guid":{"rendered":"https:\/\/www.rubri.cn\/indie_testimonial\/v2-case-28\/"},"modified":"2026-10-27T07:18:13","modified_gmt":"2026-10-26T23:18:13","slug":"organic-acid-recovery-bmed-chemical-480m3d","status":"publish","type":"indie_testimonial","link":"https:\/\/www.rubri.cn\/en\/indie_testimonial\/organic-acid-recovery-bmed-chemical-480m3d\/","title":{"rendered":"Bipolar membrane electrodialysis (BMED) for a 480m3\/d organic acid recovery project at a chemical company"},"content":{"rendered":"<p>Bipolar membrane electrodialysis (BMED) used in a 480m3\/d organic acid recovery project for a chemical 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: 480m3\/d<\/li>\n<li>Number of units: 8<\/li>\n<li>Total homogeneous membrane area: 4646m2<\/li>\n<li>Bipolar membrane area: 1307m2<\/li>\n<\/ul>\n<h2>Project background<\/h2>\n<p>Organic acid salt solutions are commonly generated in chemical production. Conventional acidification processes require the addition of inorganic acid and produce large amounts of inorganic by-product salts.<\/p>\n<p>By-product salts have low value and are difficult to dispose of, while the introduced inorganic ions increase the burden of downstream separation.<\/p>\n<p>The project aims to convert organic acid salts back into organic acids and alkali in a cleaner way, enabling internal circulation.<\/p>\n<h2>Process route<\/h2>\n<ul>\n<li>Bipolar membrane electrodialysis (BMED) is adopted, with the membrane stack assembled by alternating bipolar membranes and homogeneous anion- and cation-exchange membranes.<\/li>\n<li>Hydrogen ions generated by water dissociation in the intermediate layer of the bipolar membrane combine with organic acid anions in the feed to form organic acids.<\/li>\n<li>Hydroxide ions combine with cations in the feed to form an alkali solution, which is returned to upstream processes for use.<\/li>\n<li>The entire process is driven by electricity, with no external inorganic acid added, and the amount of by-product salt is significantly reduced.<\/li>\n<\/ul>\n<h2>Configuration scale<\/h2>\n<ul>\n<li>Treatment capacity: 480 m\u00b3\/d.<\/li>\n<li>Equipment configured: 8 units.<\/li>\n<li>Homogeneous membrane area: 4646 m\u00b2.<\/li>\n<li>Bipolar membrane area: 1307 m\u00b2.<\/li>\n<\/ul>\n<h2>Illustrative materials<\/h2>\n<div class=\"iw-media-grid\">\n<figure><img decoding=\"async\" width=\"796\" height=\"511\" src=\"\/wp-content\/uploads\/2026\/07\/v2-c3c92a3473bc.png\" class=\"attachment-large size-large\" alt=\"\u53cc\u6781\u819c\u7535\u6e17\u6790\u7528\u4e8e\u67d0\u5316\u5de5\u4f01\u4e1a480m3\/d\u56de\u6536\u6709\u673a\u9178\u5de5\u7a0b\" loading=\"lazy\" \/><figcaption>Illustration of bipolar membrane electrodialysis (BMED) used in a 480m3\/d organic acid recovery project for a chemical enterprise<\/figcaption><\/figure>\n<\/div>","protected":false},"featured_media":131,"menu_order":280,"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 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