{"id":259,"date":"2025-08-07T22:31:13","date_gmt":"2025-08-07T15:31:13","guid":{"rendered":"https:\/\/hydromasterindonesia.com\/?post_type=teknologi&#038;p=259"},"modified":"2026-08-12T13:40:37","modified_gmt":"2026-08-12T06:40:37","slug":"demineralization-system-with-electro-de-ionization-edi","status":"publish","type":"teknologi","link":"https:\/\/hydromasterindonesia.com\/en\/technology\/demineralization-system-with-electro-de-ionization-edi\/","title":{"rendered":"Demineralization System with Electro De-Ionization (EDI)"},"content":{"rendered":"<p class=\"isSelectedEnd\">Electro De-Ionization (EDI) is a water purification technology that combines ion exchange resin, ion-selective membrane, and electric current to continuously reduce dissolved ion content.<\/p>\n<p class=\"isSelectedEnd\">This technology is generally used after the Reverse Osmosis (RO) process as a polishing stage to produce water with a high level of purity without the need for periodic chemical regeneration as in conventional Mixed Bed systems.<\/p>\n<p>Hydromaster provides EDI systems that can be integrated with a range of industrial water treatment plants based on feed water quality, capacity, product water quality targets, and project operational needs.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium wp-image-1355\" src=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto-2-224x300.webp\" alt=\"\" width=\"224\" height=\"300\" srcset=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto-2-224x300.webp 224w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto-2-600x803.webp 600w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto-2-768x1027.webp 768w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto-2.webp 1196w\" sizes=\"(max-width: 224px) 100vw, 224px\" \/> <img decoding=\"async\" class=\"alignnone size-medium wp-image-1356\" src=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto1-tangki-224x300.webp\" alt=\"\" width=\"224\" height=\"300\" srcset=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto1-tangki-224x300.webp 224w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto1-tangki-600x803.webp 600w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto1-tangki-768x1027.webp 768w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/08\/foto1-tangki.webp 1196w\" sizes=\"(max-width: 224px) 100vw, 224px\" \/><\/p>\n<h2>What is Electro De-Ionization (EDI)?<\/h2>\n<p class=\"isSelectedEnd\">EDI is a continuous deionization process that utilizes a combination of ion exchange resins, ion selective membranes, and electric fields.<\/p>\n<p class=\"isSelectedEnd\">Ions dissolved in water are directed through the membrane towards the concentrate stream, while water with a lower ion content exits as product water.<\/p>\n<p>Because the resin is continuously regenerated through an electrochemical process, the EDI system does not require regeneration using acids and bases as is commonly used in conventional Mixed Beds.<\/p>\n<p>Ion exchange in the EDI system is continuously generated, unlike resin-based demineralization systems. Typically, product water resistivity of &gt;15 M\u03a9.cm is consistently achieved using this process. In addition to the advantages of practical operation and reduced downtime during regeneration, EDI can also provide more consistent product purity levels than resin-type ion exchange systems.<\/p>\n<h2>How Does the EDI System Work?<\/h2>\n<p class=\"isSelectedEnd\">The EDI system receives feed water of a certain quality, generally from Reverse Osmosis.<\/p>\n<p class=\"isSelectedEnd\">Within the EDI stack there are:<\/p>\n<ul data-spread=\"false\">\n<li>Ion exchange resin<\/li>\n<li>Cation exchange membrane<\/li>\n<li>Anion exchange membrane<\/li>\n<li>Electrode<\/li>\n<li>Product water channel<\/li>\n<li>Concentrate water channel<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">When an electric current is passed, positive and negative ions move towards opposite electrodes through an ion-selective membrane.<\/p>\n<p class=\"isSelectedEnd\">The ions are then channeled to the concentrate stream, while the main stream produces water with a higher level of purity.<\/p>\n<p class=\"isSelectedEnd\">In general, the system configuration can be:<\/p>\n<p class=\"isSelectedEnd\"><strong>Pretreatment \u2192 Reverse Osmosis \u2192 EDI \u2192 High-Purity Water<\/strong><\/p>\n<p>The actual configuration needs to be adjusted to the feed water quality and product water target.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-1491\" src=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-2-300x219.webp\" alt=\"\" width=\"300\" height=\"219\" srcset=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-2-300x219.webp 300w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-2-600x438.webp 600w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-2.webp 636w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>Advantages of EDI technology over Mixed Bed Deionization:<\/strong><\/p>\n<ul>\n<li>No chemical for regeneration required<\/li>\n<li>Much lower downtime - proven technology<\/li>\n<li>Guaranteed consistent output quality and flow<\/li>\n<li>Reduced health and environmental risks<\/li>\n<li>Less footprint<\/li>\n<li>Lower operational costs in terms of chemicals and labor cost<\/li>\n<li>Continuous process, not batch process<\/li>\n<\/ul>\n<p><strong>Disadvantages of the EDI system over Mixed Bed Deionization:<\/strong><\/p>\n<ul>\n<li>Stricter input quality criteria<\/li>\n<li>Relatively higher initial investment costs, but with a short payback period due to its low operational cost<\/li>\n<\/ul>\n<p>How does EDI produce such pure water?<\/p>\n<p><strong>Diagram 1<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1492\" src=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-3-300x222.webp\" alt=\"\" width=\"420\" height=\"311\" srcset=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-3-300x222.webp 300w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-3.webp 507w\" sizes=\"(max-width: 420px) 100vw, 420px\" \/><\/p>\n<p><strong>Diagram 2<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1493\" src=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-4-300x234.webp\" alt=\"\" width=\"415\" height=\"324\" srcset=\"https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-4-300x234.webp 300w, https:\/\/hydromasterindonesia.com\/wp-content\/uploads\/2025\/09\/EDI-4.webp 590w\" sizes=\"(max-width: 415px) 100vw, 415px\" \/><\/p>\n<h2>EDI vs Mixed Bed Demineralization<\/h2>\n<p class=\"isSelectedEnd\">Both EDI and Mixed Bed are used to produce water with high purity levels, but their operating principles are different.<\/p>\n<h3>Electro De-Ionization (EDI)<\/h3>\n<ul data-spread=\"false\">\n<li>Using resin, membrane, and electric current<\/li>\n<li>Operating continuously<\/li>\n<li>Does not require periodic acid and base regeneration<\/li>\n<li>Requires feed water with more controlled quality<\/li>\n<li>Generally placed after Reverse Osmosis<\/li>\n<\/ul>\n<h3>Mixed Bed<\/h3>\n<ul data-spread=\"false\">\n<li>Using cation and anion resins<\/li>\n<li>Requires periodic resin regeneration<\/li>\n<li>More flexible to various feed water conditions<\/li>\n<li>Requires the use of regeneration chemicals<\/li>\n<li>Widely used as polishing demineralized water<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">Technology selection needs to consider the target water quality, feed water, capacity, operational costs, and needs of each project.<\/p>\n<h2>EDI Applications for Industrial Needs<\/h2>\n<p class=\"isSelectedEnd\">EDI is suitable for use in facilities that require consistently high-purity water, including:<\/p>\n<ul data-spread=\"false\">\n<li>Power plant<\/li>\n<li>Boiler feed water<\/li>\n<li>Electronics industry<\/li>\n<li>Pharmaceutical industry<\/li>\n<li>Chemical industry<\/li>\n<li>Manufacturing industry<\/li>\n<li>Process water<\/li>\n<li>High-purity utility water<\/li>\n<li>Demineralization plant<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The water quality requirements of each industry are different, so the system design needs to be determined based on the actual specifications of the project.<\/p>\n<h2>EDI Integration in Demineralization System<\/h2>\n<p class=\"isSelectedEnd\">EDI is generally not a standalone technology.<\/p>\n<p class=\"isSelectedEnd\">To obtain optimal performance, the system can be integrated with several water treatment technologies such as:<\/p>\n<ul data-spread=\"false\">\n<li>Multi Media Filter<\/li>\n<li><a href=\"https:\/\/hydromasterindonesia.com\/en\/technology\/ultra-filtration-uf\/\">Ultra Filtration<\/a><\/li>\n<li><a href=\"https:\/\/hydromasterindonesia.com\/en\/technology\/brackish-water-reverse-osmosis-bwro\/\">Brackish Water Reverse Osmosis<\/a><\/li>\n<li>Reverse Osmosis<\/li>\n<li>Demineralization System<\/li>\n<li>Mixed Bed as an alternative or additional polishing in certain applications<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">One example configuration could be:<\/p>\n<p class=\"isSelectedEnd\"><strong>Raw Water \u2192 MMF \u2192 UF \u2192 RO \u2192 EDI \u2192 Product Water<\/strong><\/p>\n<p class=\"isSelectedEnd\">The final configuration needs to be adjusted based on the raw water characteristics and water quality targets.<\/p>\n<h2>Hydromaster Experience on RO + EDI Systems<\/h2>\n<p class=\"isSelectedEnd\">Hydromaster lists Electro De-Ionization (EDI) as part of its water treatment technology in its company profile.<\/p>\n<p class=\"isSelectedEnd\">One of the project references listed is:<\/p>\n<h3>Pesanggaran Gas Power Plant \u2013 Bali<\/h3>\n<p class=\"isSelectedEnd\"><strong>System:<\/strong> Demineralization System (RO + EDI)<br \/>\n<strong>Capacity:<\/strong> 12 m\u00b3\/day<br \/>\n<strong>Year:<\/strong> 2022<\/p>\n<p class=\"isSelectedEnd\">This reference shows the application of Reverse Osmosis and EDI integration for demineralized water needs in the power generation sector.<\/p>\n<h2>Why Choose Hydromaster?<\/h2>\n<p class=\"isSelectedEnd\">Hydromaster has been providing water and wastewater treatment solutions in Indonesia since 2005.<\/p>\n<p class=\"isSelectedEnd\">The Hydromaster approach includes:<\/p>\n<ul data-spread=\"false\">\n<li>Problem Identification<\/li>\n<li>Engineering Design for<\/li>\n<li>Fabrication &amp; Procurement<\/li>\n<li>Construction &amp; Installation<\/li>\n<li>Commissioning<\/li>\n<li>Operator Training<\/li>\n<li>Operation &amp; Maintenance<\/li>\n<li>DBOO \/ DBOT for specific applications<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">With this approach, the EDI system can be designed as part of the overall water treatment process, rather than simply selecting units based on capacity.<\/p>\n<h2>Frequently Asked Questions about EDI<\/h2>\n<h3>What is Electro De-Ionization (EDI)?<\/h3>\n<p class=\"isSelectedEnd\">EDI is a continuous deionization technology that uses ion exchange resin, ion-selective membrane, and electrical energy to remove dissolved ions from water.<\/p>\n<h3>Does EDI require Reverse Osmosis?<\/h3>\n<p class=\"isSelectedEnd\">In many applications, EDI is used after Reverse Osmosis because it requires feed water with relatively high and controlled quality.<\/p>\n<h3>What is the difference between EDI and Mixed Bed?<\/h3>\n<p class=\"isSelectedEnd\">EDI operates continuously without periodic chemical regeneration, whereas Mixed Bed uses resin that needs to be regenerated using chemicals.<\/p>\n<h3>Does EDI use regeneration chemicals?<\/h3>\n<p class=\"isSelectedEnd\">EDI does not require regular regeneration using acids and bases like conventional Mixed Bed.<\/p>\n<h3>What industries use EDI?<\/h3>\n<p class=\"isSelectedEnd\">EDI is widely used for power plants, boiler feed water, manufacturing, pharmaceuticals, electronics, and other industries that require high-purity water.<\/p>\n<h3>Does Hydromaster have experience with EDI systems?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Hydromaster&#039;s company profile lists the RO + EDI Demineralization System project at the Pesanggaran Gas Power Plant in Bali in 2022.<\/p>\n<h2>Need an EDI System for High-Purity Water?<\/h2>\n<p>Consult on feed water quality, capacity, and product water quality targets together. <a href=\"https:\/\/hydromasterindonesia.com\/en\/\">Hydromaster<\/a> to determine the RO + EDI configuration that suits your industry needs.<\/p>","protected":false},"featured_media":1490,"parent":0,"template":"","kategori-teknologi":[9],"class_list":["post-259","teknologi","type-teknologi","status-publish","has-post-thumbnail","hentry","kategori-teknologi-teknologi-lainnya"],"acf":[],"yoast_head":"\n<title>Sistem Demineralisasi dengan Elektro De-Ionisasi (EDI) - Hydromaster Indonesia<\/title>\n<meta name=\"description\" content=\"Sistem Electro De Ionization (EDI) untuk demineralisasi air industri, boiler, dan kebutuhan air murni. 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