{"id":20,"date":"2026-08-31T08:49:11","date_gmt":"2026-08-31T08:49:11","guid":{"rendered":"https:\/\/vas.co.th\/?page_id=20"},"modified":"2026-08-31T10:00:39","modified_gmt":"2026-08-31T10:00:39","slug":"how-does-ro-work","status":"publish","type":"page","link":"https:\/\/vas.co.th\/?page_id=20","title":{"rendered":"How Does RO Work?"},"content":{"rendered":"\n<div class=\"vas-page vas-knowledge-article\">\n<section class=\"vas-article-hero vas-section\">\n<div class=\"vas-container vas-article-shell\">\n<nav class=\"vas-breadcrumbs\" aria-label=\"Breadcrumb\"><a href=\"https:\/\/vas.co.th\/\">Home<\/a><span>\/<\/span><a href=\"https:\/\/vas.co.th\/?page_id=9\">Knowledge Center<\/a><span>\/<\/span><span aria-current=\"page\">How Does RO Work?<\/span><\/nav>\n<p class=\"vas-eyebrow\">RO Systems<\/p>\n<h1>How Does RO Work?<\/h1>\n<p class=\"vas-lead\">Reverse osmosis works as a connected treatment sequence. Each stage prepares the water, performs separation, or protects the quality delivered at the outlet.<\/p>\n<\/div>\n<\/section>\n<section class=\"vas-section vas-section--white\">\n<div class=\"vas-container vas-article-shell\">\n<article class=\"vas-article-body\">\n<figure class=\"vas-subject-visual vas-local-technical-figure\"><figcaption>\n<p class=\"vas-eyebrow\">How it works<\/p>\n<h2>How an RO System Produces Treated Water<\/h2>\n<\/figcaption><div class=\"vas-local-technical-figure__viewport\"><a href=\"https:\/\/vas.co.th\/wp-content\/plugins\/vas-site-prototype-plugin\/assets\/technical\/RO%20System%20flow%20(How%20does%20Ro%20system%20work).png\" target=\"_blank\" rel=\"noopener\" aria-label=\"Open How an RO System Produces Treated Water at full size\"><img decoding=\"async\" src=\"https:\/\/vas.co.th\/wp-content\/plugins\/vas-site-prototype-plugin\/assets\/technical\/RO%20System%20flow%20(How%20does%20Ro%20system%20work).png\" alt=\"Labeled RO system flow showing tap-water inlet, sediment and carbon pretreatment, the RO membrane, reject water, post-carbon filtration, storage, and drinking-water outlets.\" loading=\"lazy\"><\/a><\/div>\n<p class=\"vas-photo-credit\">Simplified educational flow. Actual component order, treatment claims, performance, and operating conditions must be confirmed for the selected system.<\/p>\n<\/figure>\n<section class=\"vas-article-lessons\" aria-labelledby=\"vas-article-lessons-title\">\n<header>\n<p class=\"vas-eyebrow\">Key takeaways<\/p>\n<h2 id=\"vas-article-lessons-title\">What to Know<\/h2>\n<p>Scan the main ideas first. Open \u201cKey points\u201d only when you want the supporting details.<\/p>\n<\/header>\n<p class=\"vas-article-lessons__hint\">Swipe the cards to continue <span aria-hidden=\"true\">\u2192<\/span><\/p>\n<div class=\"vas-article-lessons__grid\" role=\"list\" aria-label=\"Article key takeaways\">\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">01<\/span><\/p>\n<h3>Tap Water Enters the System<\/h3>\n<p>The diagram begins at the feed-water connection. Available pressure, temperature, dissolved-solids level, hardness, disinfectant, sediment, and known contaminants determine whether the standard stages are sufficient or additional treatment is required.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>A shut-off valve and accessible service connections support maintenance<\/li>\n<li>Low or unstable pressure can reduce membrane production<\/li>\n<li>The installation must include the approved drainage arrangement<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">02<\/span><\/p>\n<h3>Sediment Filtration Removes Larger Particles<\/h3>\n<p>The PP or sediment cartridge intercepts dirt, rust, and other suspended particles before they reach the finer treatment stages. It protects flow passages but does not reduce dissolved salts.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Sediment filtration protects downstream cartridges and flow passages<\/li>\n<li>A loaded cartridge can reduce pressure and treated-water production<\/li>\n<li>This mechanical stage captures particles but does not remove dissolved salts<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">03<\/span><\/p>\n<h3>Carbon Pretreatment Protects and Conditions<\/h3>\n<p>The carbon pre-filter reduces chlorine, odor, and selected organic compounds. Its protective role is especially important when the membrane material has a specified chlorine tolerance.<\/p>\n<details>\n<summary>Key points <span>2<\/span><\/summary>\n<ul>\n<li>Exhausted carbon may no longer provide adequate protection<\/li>\n<li>Cartridge life depends on water quality, volume treated, and manufacturer capacity<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">04<\/span><\/p>\n<h3>The Membrane Separates Two Water Streams<\/h3>\n<p>Pressure moves feed water along the membrane. Treated permeate passes through the selective membrane layer, while reject water remains on the feed side and carries concentrated separated material toward the drain.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Reject flow is a normal and necessary part of RO operation<\/li>\n<li>Recovery and rejection performance depend on the complete operating conditions<\/li>\n<li>Restricting the reject path can damage performance or the membrane<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">05<\/span><\/p>\n<h3>Treated Water Is Stored and Polished<\/h3>\n<p>Permeate is held in a storage tank or delivered by a direct-flow design. A post-carbon stage commonly provides final taste and odor polishing before the water reaches the outlet.<\/p>\n<details>\n<summary>Key points <span>2<\/span><\/summary>\n<ul>\n<li>The tank, tubing, and post-filter must be kept hygienic<\/li>\n<li>Storage pressure influences the usable quantity and delivery rate<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">06<\/span><\/p>\n<h3>Water Reaches the Faucet or Dispenser<\/h3>\n<p>The final outlet delivers treated water on demand. The picture shows both a dedicated faucet and a dispenser as possible formats; the selected model may use one arrangement rather than both.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>The outlet format depends on the selected system configuration<\/li>\n<li>Flow at the outlet depends on production, storage, pressure, and restrictions<\/li>\n<li>Keep the faucet or dispensing outlet clean and protected from contamination<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">07<\/span><\/p>\n<h3>Maintenance Keeps the Sequence Working<\/h3>\n<p>Sediment and carbon cartridges, the membrane, tank, tubing, valves, and dispensing outlet require inspection, replacement, and sanitation at intervals based on water quality, usage, and manufacturer guidance.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Set service intervals from water conditions, usage, and model guidance<\/li>\n<li>Replace approved cartridges and inspect the membrane and pressure controls<\/li>\n<li>Sanitize the tank, tubing, valves, and outlet using the approved procedure<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<\/div>\n<\/section>\n<\/article>\n<aside class=\"vas-article-next\">\n<p class=\"vas-eyebrow\">Put it into practice<\/p>\n<h2>Discuss the Right Product for Your Needs<\/h2>\n<p>Use this guide as a starting point. Final selection should be confirmed against the actual system conditions and manufacturer specifications.<\/p>\n<div class=\"vas-actions\"><a class=\"vas-button\" href=\"https:\/\/vas.co.th\/?page_id=22\">Contact Us<\/a><a class=\"vas-button vas-button--secondary\" href=\"https:\/\/vas.co.th\/?page_id=8\">View RO Dispensers<\/a><\/div>\n<p><a class=\"vas-text-link\" href=\"https:\/\/vas.co.th\/?page_id=9\">Back to the Knowledge Center <span class=\"vas-icon vas-icon--arrow-right \" aria-hidden=\"true\"><\/span><\/a><\/aside>\n<\/div>\n<\/section><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Home\/Knowledge Center\/How Does RO Work? RO Systems How Does RO Work? Reverse osmosis works as a connected treatment sequence. Each stage prepares the water, performs separation, or protects the quality delivered at the outlet. How it works How an RO System Produces Treated Water Simplified educational flow. Actual component order, treatment claims, performance, and operating&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":9,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"hide","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"hide","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-20","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/20","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vas.co.th\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20"}],"version-history":[{"count":1,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/20\/revisions"}],"predecessor-version":[{"id":44,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/20\/revisions\/44"}],"up":[{"embeddable":true,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/9"}],"wp:attachment":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}