{"id":2349,"date":"2024-04-09T15:05:13","date_gmt":"2024-04-09T15:05:13","guid":{"rendered":"https:\/\/sumiowater.com\/en\/?page_id=2349"},"modified":"2026-06-27T03:40:33","modified_gmt":"2026-06-27T08:40:33","slug":"corrugated-plates-separator","status":"publish","type":"page","link":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/","title":{"rendered":"Corrugated Plates Separator"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">The Best Option in Primary Treatment of Produced Water.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The corrugated plates separator is the first option to consider in the gravity separation of oily waters, <strong>particularly<\/strong> in effluents with a low presence of suspended solids, <strong>such as<\/strong> produced waters. Its lack of moving parts and greater surface area in a smaller volume make it the most compact and efficient selection for oil and water separation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Its residence time is approximately one-fifth of that of a conventional API separator, whose gravity-separation sizing follows <a href=\"https:\/\/standards.globalspec.com\/std\/95137\/api-publ-421\" target=\"_blank\" rel=\"noreferrer noopener\">API Publication 421 \u2013 Design and Operation of Oil-Water Separators<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Operation of a Corrugated Plates Separator Tank<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Oily water enters the CPS corrugated plates separator unit towards the inlet compartment, which in turn acts as a pre-sedimentation chamber for suspended solids. This chamber reduces the velocity of the incoming effluent and directs it toward the plates pack inlet. Here, it contacts large oil droplets exiting the pack in an upward flow. The oily effluent, containing small droplets and remaining solid particles, then enters the plate pack, where the pack establishes a laminar flow.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"514\" src=\"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2025\/08\/Flow-Arrangement-of-a-Corrugated-Plates-Separator.jpg\" alt=\"Flow Arrangement of a Corrugated Plate Separator. How does it work?\" class=\"wp-image-3735\" style=\"width:446px;height:auto\" srcset=\"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2025\/08\/Flow-Arrangement-of-a-Corrugated-Plates-Separator.jpg 650w, https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2025\/08\/Flow-Arrangement-of-a-Corrugated-Plates-Separator-300x237.jpg 300w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><figcaption class=\"wp-element-caption\">Flow Arrangement of a Corrugated Plates Separator<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Corrugated Plates Separator Pack<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Corrugated Plate pack acts as the heart of the equipment. It increases the surface area by placing plates in parallel, which distributes the total flow into multiple parallel channels and facilitates the coalescence and separation of the finest oil droplets from the effluent. While typical plate spacing measures 3\/4\u2033, the system allows for greater spacing to accommodate effluents that create plugging from high solids concentrations. The system distributes the effluent flow evenly between each plate channel and directs it downward at a 45\u00ba inclination.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The oil in each of the plate channels rises toward the ridges of the corrugated plate and flows counterflow toward the package inlet, then rises to the surface of the tank. The solids, on the other hand, settle in the valleys of the plates and flow down along with the effluent to settle at the bottom of the tank.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"363\" src=\"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Oil-Water-Separation-in-Corrugated-Plates.jpg\" alt=\"Oil Coalescence in Corrugated Plates\" class=\"wp-image-2352\" style=\"width:476px;height:auto\" srcset=\"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Oil-Water-Separation-in-Corrugated-Plates.jpg 650w, https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Oil-Water-Separation-in-Corrugated-Plates-300x168.jpg 300w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">CORRUGATED PLATES MATERIALS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The selection of plate materials is made based on the effluent temperature. Fiberglass is the option for effluent temperatures below 45\u00baC and stainless steel for higher temperatures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Other Applications<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Among the most common applications of corrugated plate separators are the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Produced Water<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ballast or Bilge Water<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Runoff Water<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Equipment Washing Water.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Corrugated Plates Standard Models List<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-border-color has-primary-border-color\"><thead><tr><th>Model<\/th><th>Flow<br>GPM<\/th><th>Flow<br>m<sup>3<\/sup>\/hr<\/th><th class=\"has-text-align-center\" data-align=\"center\">Dimensions (m)<br>L x W x H<\/th><th class=\"has-text-align-center\" data-align=\"center\">Peso Vac\u00edo<br>kg<\/th><th class=\"has-text-align-center\" data-align=\"center\">Peso Lleno<br>kg<\/th><\/tr><\/thead><tbody><tr><td>SWSCPS010<\/td><td>10<\/td><td>2<\/td><td class=\"has-text-align-center\" data-align=\"center\">1.35 x 0.91 x 1.17<\/td><td class=\"has-text-align-center\" data-align=\"center\">341<\/td><td class=\"has-text-align-center\" data-align=\"center\">636<\/td><\/tr><tr><td>SWSCPS060<\/td><td>60<\/td><td>14<\/td><td class=\"has-text-align-center\" data-align=\"center\">2.43 x 1.42 x 2.13<\/td><td class=\"has-text-align-center\" data-align=\"center\">867<\/td><td class=\"has-text-align-center\" data-align=\"center\">5,448<\/td><\/tr><tr><td>SWSCPS125<\/td><td>125\n<\/td><td>28<\/td><td class=\"has-text-align-center\" data-align=\"center\">3.05 x 1.42 x 2.29<\/td><td class=\"has-text-align-center\" data-align=\"center\">1,816<\/td><td class=\"has-text-align-center\" data-align=\"center\">8,626<\/td><\/tr><tr><td>SWSCPS250<\/td><td>250<\/td><td>57<\/td><td class=\"has-text-align-center\" data-align=\"center\">3.4 \u00d7 1.42 x 2.82<\/td><td class=\"has-text-align-center\" data-align=\"center\">2,225<\/td><td class=\"has-text-align-center\" data-align=\"center\">12,530<\/td><\/tr><tr><td>SWSCPS500<\/td><td>500<\/td><td>114<\/td><td class=\"has-text-align-center\" data-align=\"center\">3.25 x 2.64 x 2.82<\/td><td class=\"has-text-align-center\" data-align=\"center\">3,087<\/td><td class=\"has-text-align-center\" data-align=\"center\">20,430<\/td><\/tr><tr><td>SWSCPS750<\/td><td>750<\/td><td>170<\/td><td class=\"has-text-align-center\" data-align=\"center\">3.61 x 3.86 x 2.82<\/td><td class=\"has-text-align-center\" data-align=\"center\">5,448<\/td><td class=\"has-text-align-center\" data-align=\"center\">31,962<\/td><\/tr><tr><td>SWSCPS1000<\/td><td>\n1,000<\/td><td>227<\/td><td class=\"has-text-align-center\" data-align=\"center\">4.83 x 2.67 x 3.66<\/td><td class=\"has-text-align-center\" data-align=\"center\">6,356<\/td><td class=\"has-text-align-center\" data-align=\"center\">40,406<\/td><\/tr><tr><td>SWSCPS1500<\/td><td>1,500<\/td><td>341<\/td><td class=\"has-text-align-center\" data-align=\"center\">4.8 x 3.86 x 3.66<\/td><td class=\"has-text-align-center\" data-align=\"center\">9,216<\/td><td class=\"has-text-align-center\" data-align=\"center\">59,020<\/td><\/tr><tr><td>SWSCPS2500<\/td><td>2,500<\/td><td>568<\/td><td class=\"has-text-align-center\" data-align=\"center\">4.8 x 6.30 x 3.66<\/td><td class=\"has-text-align-center\" data-align=\"center\">15,845<\/td><td class=\"has-text-align-center\" data-align=\"center\">76,272<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-0ac25e85 wp-block-uagb-separator--icon\"><div class=\"uagb-separator-spacing-wrapper\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><div class=\"wp-block-uagb-separator-element\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 384 512\"><path d=\"M16 319.1C16 245.9 118.3 89.43 166.9 19.3C179.2 1.585 204.8 1.585 217.1 19.3C265.7 89.43 368 245.9 368 319.1C368 417.2 289.2 496 192 496C94.8 496 16 417.2 16 319.1zM112 319.1C112 311.2 104.8 303.1 96 303.1C87.16 303.1 80 311.2 80 319.1C80 381.9 130.1 432 192 432C200.8 432 208 424.8 208 416C208 407.2 200.8 400 192 400C147.8 400 112 364.2 112 319.1z\"><\/path><\/svg><\/div><\/div><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\" style=\"padding-top:0;padding-bottom:0\">More Info<\/h4>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-6b1a0623 wp-block-group-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--xxx-small);padding-bottom:var(--wp--preset--spacing--xxx-small)\">\n<div class=\"wp-block-uagb-buttons uagb-buttons__outer-wrap uagb-btn__default-btn uagb-btn-tablet__default-btn uagb-btn-mobile__default-btn uagb-block-100626e2\"><div class=\"uagb-buttons__wrap uagb-buttons-layout-wrap \">\n<div class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-57ffe7a7 wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"https:\/\/sumiowater.com\/en\/oil-water-separation\/\" rel=\"follow noopener\" target=\"_blank\" role=\"button\"><div class=\"uagb-button__link\">Oil Water Separators<\/div><\/a><\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-25800b65 wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"https:\/\/sumiowater.com\/en\/api-separators\/\" rel=\"follow noopener\" target=\"_blank\" role=\"button\"><div class=\"uagb-button__link\">API Separators<\/div><\/a><\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-160f2495 wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"https:\/\/sumiowater.com\/en\/scum-pipe-skimmer-pipe\/\" rel=\"follow noopener\" target=\"_blank\" role=\"button\"><div class=\"uagb-button__link\">Scum Pipe<\/div><\/a><\/div><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Downloads<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Corrugated Plates Separator Application Fo<\/strong>rm<\/p>\n\n\n\n<div class=\"wp-block-file has-tertiary-background-color has-background has-link-color wp-elements-151af01cb9dc6f092a090aa915156429\"><a id=\"wp-block-file--media-0e14752a-2a90-476d-aef6-c1de0b1ffa16\" href=\"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2025\/07\/Request-for-a-Corrugated-Plate-Separator.docx\">Request for a Corrugated Plate Separator<\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">FAQ<\/h3>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1782548193982\"><strong class=\"schema-faq-question\">What is a corrugated plates separator?<\/strong> <p class=\"schema-faq-answer\">A corrugated plates separator (CPI) is a gravity-based oil-water separator that uses packs of closely spaced corrugated plates to remove free oil and settleable solids from water. It&#8217;s the first option to consider for oily effluents with low suspended-solids content, such as produced water, and it relies on the density difference between oil and water (Stokes&#8217; law).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782548302323\"><strong class=\"schema-faq-question\">How is a corrugated plates separator different from an API separator?<\/strong> <p class=\"schema-faq-answer\">Both rely on gravity, but a corrugated plates separator packs far more separation surface area into a smaller volume. Its residence time is roughly one-fifth that of a conventional API separator, so it delivers equivalent separation in a much more compact footprint and can capture finer oil droplets.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782548353072\"><strong class=\"schema-faq-question\">What size oil droplets can it remove?<\/strong> <p class=\"schema-faq-answer\">A corrugated plates separator is commonly designed to remove free-oil droplets down to around 60 microns \u2014 considerably finer than the ~150 microns typical of a conventional API separator. Removal efficiency depends on the density difference between oil and water, the effluent temperature, and its viscosity.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782548393405\"><strong class=\"schema-faq-question\">What are the plates made of?<\/strong> <p class=\"schema-faq-answer\">Plate material is chosen based on effluent temperature: fiberglass (FRP) for effluents below 45 \u00b0C and stainless steel for higher temperatures. Both resist the chemicals and abrasion common in oily wastewater, and because the unit has no moving parts, maintenance stays low.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782548431398\"><strong class=\"schema-faq-question\">Which industries use corrugated plates separators?<\/strong> <p class=\"schema-faq-answer\">They&#8217;re used wherever free oil must be removed from water \u2014 oil &amp; gas produced water, refinery and petrochemical effluent, equipment and vehicle wash water, and general industrial wastewater pretreatment. They&#8217;re often installed upstream of a polishing stage such as DAF to meet final discharge limits.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782548470262\"><strong class=\"schema-faq-question\">Can it handle emulsified oil?<\/strong> <p class=\"schema-faq-answer\">No. Gravity separation only removes free, non-emulsified oil. Chemically or mechanically emulsified oil must first be broken with demulsifiers, then polished with a flotation stage (DAF\/IGF) to reach low discharge limits such as 15 ppm.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>The Best Option in Primary Treatment of Produced Water. The corrugated plates separator is the first option to consider in the gravity separation of oily waters, particularly in effluents with a low presence of suspended solids, such as produced waters. Its lack of moving parts and greater surface area in a smaller volume make it [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2351,"parent":2565,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_swt_meta_header_display":false,"_swt_meta_footer_display":false,"_swt_meta_site_title_display":false,"_swt_meta_sticky_header":false,"_swt_meta_transparent_header":false,"footnotes":""},"class_list":["post-2349","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Corrugated Plates Separator CPI | Sumio Water<\/title>\n<meta name=\"description\" content=\"Compact CPI corrugated plates separator for oily and produced water \u2014 one-fifth the footprint of an API separator, with no moving parts.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Corrugated Plates Separator CPI | Sumio Water\" \/>\n<meta property=\"og:description\" content=\"Compact CPI corrugated plates separator for oily and produced water \u2014 one-fifth the footprint of an API separator, with no moving parts.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/\" \/>\n<meta property=\"og:site_name\" content=\"Sumio Water\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-27T08:40:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"716\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/\",\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/\",\"name\":\"Corrugated Plates Separator CPI | Sumio Water\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2024\\\/04\\\/Corrugated-Plates-Separator.jpg\",\"datePublished\":\"2024-04-09T15:05:13+00:00\",\"dateModified\":\"2026-06-27T08:40:33+00:00\",\"description\":\"Compact CPI corrugated plates separator for oily and produced water \u2014 one-fifth the footprint of an API separator, with no moving parts.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548193982\"},{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548302323\"},{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548353072\"},{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548393405\"},{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548431398\"},{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548470262\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#primaryimage\",\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2024\\\/04\\\/Corrugated-Plates-Separator.jpg\",\"contentUrl\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2024\\\/04\\\/Corrugated-Plates-Separator.jpg\",\"width\":1024,\"height\":716,\"caption\":\"Corrugated Plates Separator in an Oil Production Facility\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Oil Water Separation\",\"item\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Corrugated Plates Separator\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/\",\"name\":\"sumiowater.com\\\/en\",\"description\":\"Water Treatment Equipment and Systems\",\"publisher\":{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/#organization\",\"name\":\"Sumio Water Systems\",\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2023\\\/08\\\/logo_sumiowater_160_71.gif\",\"contentUrl\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2023\\\/08\\\/logo_sumiowater_160_71.gif\",\"width\":160,\"height\":71,\"caption\":\"Sumio Water Systems\"},\"image\":{\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548193982\",\"position\":1,\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548193982\",\"name\":\"What is a corrugated plates separator?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A corrugated plates separator (CPI) is a gravity-based oil-water separator that uses packs of closely spaced corrugated plates to remove free oil and settleable solids from water. It's the first option to consider for oily effluents with low suspended-solids content, such as produced water, and it relies on the density difference between oil and water (Stokes' law).\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548302323\",\"position\":2,\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548302323\",\"name\":\"How is a corrugated plates separator different from an API separator?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both rely on gravity, but a corrugated plates separator packs far more separation surface area into a smaller volume. Its residence time is roughly one-fifth that of a conventional API separator, so it delivers equivalent separation in a much more compact footprint and can capture finer oil droplets.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548353072\",\"position\":3,\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548353072\",\"name\":\"What size oil droplets can it remove?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A corrugated plates separator is commonly designed to remove free-oil droplets down to around 60 microns \u2014 considerably finer than the ~150 microns typical of a conventional API separator. Removal efficiency depends on the density difference between oil and water, the effluent temperature, and its viscosity.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548393405\",\"position\":4,\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548393405\",\"name\":\"What are the plates made of?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Plate material is chosen based on effluent temperature: fiberglass (FRP) for effluents below 45 \u00b0C and stainless steel for higher temperatures. Both resist the chemicals and abrasion common in oily wastewater, and because the unit has no moving parts, maintenance stays low.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548431398\",\"position\":5,\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548431398\",\"name\":\"Which industries use corrugated plates separators?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They're used wherever free oil must be removed from water \u2014 oil &amp; gas produced water, refinery and petrochemical effluent, equipment and vehicle wash water, and general industrial wastewater pretreatment. They're often installed upstream of a polishing stage such as DAF to meet final discharge limits.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548470262\",\"position\":6,\"url\":\"https:\\\/\\\/sumiowater.com\\\/en\\\/oil-water-separation\\\/corrugated-plates-separator\\\/#faq-question-1782548470262\",\"name\":\"Can it handle emulsified oil?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Gravity separation only removes free, non-emulsified oil. Chemically or mechanically emulsified oil must first be broken with demulsifiers, then polished with a flotation stage (DAF\\\/IGF) to reach low discharge limits such as 15 ppm.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Corrugated Plates Separator CPI | Sumio Water","description":"Compact CPI corrugated plates separator for oily and produced water \u2014 one-fifth the footprint of an API separator, with no moving parts.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/","og_locale":"en_US","og_type":"article","og_title":"Corrugated Plates Separator CPI | Sumio Water","og_description":"Compact CPI corrugated plates separator for oily and produced water \u2014 one-fifth the footprint of an API separator, with no moving parts.","og_url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/","og_site_name":"Sumio Water","article_modified_time":"2026-06-27T08:40:33+00:00","og_image":[{"width":1024,"height":716,"url":"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","FAQPage"],"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/","url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/","name":"Corrugated Plates Separator CPI | Sumio Water","isPartOf":{"@id":"https:\/\/sumiowater.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#primaryimage"},"image":{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#primaryimage"},"thumbnailUrl":"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg","datePublished":"2024-04-09T15:05:13+00:00","dateModified":"2026-06-27T08:40:33+00:00","description":"Compact CPI corrugated plates separator for oily and produced water \u2014 one-fifth the footprint of an API separator, with no moving parts.","breadcrumb":{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548193982"},{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548302323"},{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548353072"},{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548393405"},{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548431398"},{"@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548470262"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#primaryimage","url":"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg","contentUrl":"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg","width":1024,"height":716,"caption":"Corrugated Plates Separator in an Oil Production Facility"},{"@type":"BreadcrumbList","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/sumiowater.com\/en\/"},{"@type":"ListItem","position":2,"name":"Oil Water Separation","item":"https:\/\/sumiowater.com\/en\/oil-water-separation\/"},{"@type":"ListItem","position":3,"name":"Corrugated Plates Separator"}]},{"@type":"WebSite","@id":"https:\/\/sumiowater.com\/en\/#website","url":"https:\/\/sumiowater.com\/en\/","name":"sumiowater.com\/en","description":"Water Treatment Equipment and Systems","publisher":{"@id":"https:\/\/sumiowater.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sumiowater.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/sumiowater.com\/en\/#organization","name":"Sumio Water Systems","url":"https:\/\/sumiowater.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sumiowater.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2023\/08\/logo_sumiowater_160_71.gif","contentUrl":"https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2023\/08\/logo_sumiowater_160_71.gif","width":160,"height":71,"caption":"Sumio Water Systems"},"image":{"@id":"https:\/\/sumiowater.com\/en\/#\/schema\/logo\/image\/"}},{"@type":"Question","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548193982","position":1,"url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548193982","name":"What is a corrugated plates separator?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A corrugated plates separator (CPI) is a gravity-based oil-water separator that uses packs of closely spaced corrugated plates to remove free oil and settleable solids from water. It's the first option to consider for oily effluents with low suspended-solids content, such as produced water, and it relies on the density difference between oil and water (Stokes' law).","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548302323","position":2,"url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548302323","name":"How is a corrugated plates separator different from an API separator?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Both rely on gravity, but a corrugated plates separator packs far more separation surface area into a smaller volume. Its residence time is roughly one-fifth that of a conventional API separator, so it delivers equivalent separation in a much more compact footprint and can capture finer oil droplets.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548353072","position":3,"url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548353072","name":"What size oil droplets can it remove?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A corrugated plates separator is commonly designed to remove free-oil droplets down to around 60 microns \u2014 considerably finer than the ~150 microns typical of a conventional API separator. Removal efficiency depends on the density difference between oil and water, the effluent temperature, and its viscosity.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548393405","position":4,"url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548393405","name":"What are the plates made of?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Plate material is chosen based on effluent temperature: fiberglass (FRP) for effluents below 45 \u00b0C and stainless steel for higher temperatures. Both resist the chemicals and abrasion common in oily wastewater, and because the unit has no moving parts, maintenance stays low.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548431398","position":5,"url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548431398","name":"Which industries use corrugated plates separators?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"They're used wherever free oil must be removed from water \u2014 oil &amp; gas produced water, refinery and petrochemical effluent, equipment and vehicle wash water, and general industrial wastewater pretreatment. They're often installed upstream of a polishing stage such as DAF to meet final discharge limits.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548470262","position":6,"url":"https:\/\/sumiowater.com\/en\/oil-water-separation\/corrugated-plates-separator\/#faq-question-1782548470262","name":"Can it handle emulsified oil?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Gravity separation only removes free, non-emulsified oil. Chemically or mechanically emulsified oil must first be broken with demulsifiers, then polished with a flotation stage (DAF\/IGF) to reach low discharge limits such as 15 ppm.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"uagb_featured_image_src":{"full":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg",1024,716,false],"thumbnail":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator-150x150.jpg",150,150,true],"medium":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator-300x210.jpg",300,210,true],"medium_large":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator-768x537.jpg",768,537,true],"large":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg",1024,716,false],"1536x1536":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg",1024,716,false],"2048x2048":["https:\/\/sumiowater.com\/en\/wp-content\/uploads\/sites\/5\/2024\/04\/Corrugated-Plates-Separator.jpg",1024,716,false]},"uagb_author_info":{"display_name":"jpais","author_link":"https:\/\/sumiowater.com\/en\/author\/jpais\/"},"uagb_comment_info":0,"uagb_excerpt":"The Best Option in Primary Treatment of Produced Water. The corrugated plates separator is the first option to consider in the gravity separation of oily waters, particularly in effluents with a low presence of suspended solids, such as produced waters. Its lack of moving parts and greater surface area in a smaller volume make it&hellip;","_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/pages\/2349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/comments?post=2349"}],"version-history":[{"count":54,"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/pages\/2349\/revisions"}],"predecessor-version":[{"id":3796,"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/pages\/2349\/revisions\/3796"}],"up":[{"embeddable":true,"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/pages\/2565"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/media\/2351"}],"wp:attachment":[{"href":"https:\/\/sumiowater.com\/en\/wp-json\/wp\/v2\/media?parent=2349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}