{"id":440,"date":"2026-03-23T01:30:18","date_gmt":"2026-03-23T01:30:18","guid":{"rendered":"https:\/\/leojoin.com\/?page_id=440"},"modified":"2026-03-23T01:30:20","modified_gmt":"2026-03-23T01:30:20","slug":"leojoins-positive-displacement-isobaric-energy-recovery-device","status":"publish","type":"page","link":"https:\/\/leojoin.com\/ja\/leojoins-positive-displacement-isobaric-energy-recovery-device\/","title":{"rendered":"Leojoin&#8217;s Positive Displacement Isobaric Energy Recovery Device"},"content":{"rendered":"<style>\n    .leo-module {margin: 0 0 20px 0; padding: 20px; background: #fff; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.05);}\n    .leo-module h2 {color: #0F4C81; font-size: 18px; margin: 0 0 15px 0; padding-bottom: 8px; border-bottom: 2px solid #FFD700;}\n    .leo-module h3 {color: #1A659E; font-size: 16px; margin: 15px 0 10px 0;}\n    .leo-module p {color: #333; font-size: 14px; line-height: 1.7; margin: 0 0 10px 0; text-align: justify;}\n    .leo-table-wrap {overflow-x: auto; margin: 15px 0;}\n    .leo-table {width: 100%; border-collapse: collapse; text-align: center;}\n    .leo-table th {background: #0F4C81; color: #fff; padding: 10px; font-size: 13px; border: 1px solid #eee;}\n    .leo-table td {padding: 10px; font-size: 12px; border: 1px solid #eee;}\n    .leo-table tr:nth-child(even) {background: #f8f9fa;}\n    .leo-advantage-list, .leo-scene-list {display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-top: 10px;}\n    .leo-advantage-item, .leo-scene-item {border: 1px solid #eee; padding: 15px; border-radius: 6px;}\n    .leo-advantage-item h4 {color: #0F4C81; font-size: 15px; margin: 0 0 10px 0; text-align: center;}\n    .leo-scene-item h4 {color: #0F4C81; font-size: 15px; margin: 0 0 10px 0; border-left: 3px solid #FFD700; padding-left: 8px;}\n    .leo-scene-item .core-value {color: #1A659E; font-weight: 600; margin-top: 10px;}\n    .leo-contact {line-height: 2; font-size: 14px;}\n    .leo-strong {color: #0F4C81; font-weight: 600;}\n    \/* \u79fb\u52a8\u7aef\u9002\u914d *\/\n    @media (max-width: 768px) {\n        .leo-advantage-list, .leo-scene-list {grid-template-columns: 1fr;}\n        .leo-module {padding: 15px;}\n        .leo-module h2 {font-size: 16px;}\n    }\n<\/style>\n<p><!-- \u4f01\u4e1a\u7b80\u4ecb --><\/p>\n<div class=\"leo-module\">\n<h2>About Leojoin<\/h2>\n<p>Established in 2007, Shandong Leojoin Environmental Protection Technology Group Co., Ltd. is a national high-tech enterprise integrating the R&#038;D, design, production, sales, installation, commissioning, operation and maintenance services, and general contracting of engineering construction of seawater desalination equipment, industrial high-purity water equipment and water pollution control equipment.<\/p>\n<p>We have two major production bases in Jinan (Shandong) and Fuzhou (Jiangxi), with a total floor area of 40,000 square meters. Leojoin has served more than 1,000 customers in 26 countries worldwide and all provinces in China.<\/p>\n<p>Our products have fully passed the Hygiene Approval for Water-related Products, ISO9001-2015 Quality Management System, ISO14000 Environmental Management System, and EU CE Certification. We have been rated as a Contract-abiding and Trustworthy Unit for 10 consecutive years, adhering to the commitment of <span class=\"leo-strong\">Uphold Responsibility for Every Trust<\/span>.<\/p>\n<\/div>\n<p><!-- \u7814\u53d1\u80cc\u666f --><\/p>\n<div class=\"leo-module\">\n<h2>R&#038;D Background<\/h2>\n<p>Faced with the increasingly severe water resource challenges, the utilization of seawater desalination, high-salt wastewater, brackish water has become an important direction of industrial development. However, the core energy-saving equipment \u2014 the positive displacement isobaric energy recovery device, due to its extremely high technical barriers, has long relied on imports, becoming a &#8220;bottleneck&#8221; technology in China.<\/p>\n<p>The import dependence has brought high procurement costs, restricted key technologies, slow service response, and fragile supply chain security, seriously restricting the economic benefits of domestic related projects.<\/p>\n<p>Leojoin is driven by technological innovation. After years of painstaking research, we have successfully developed a positive displacement isobaric energy recovery device with complete independent intellectual property rights, breaking the dependence on imports, promoting cost reduction and efficiency increase in the industry.<\/p>\n<\/div>\n<p><!-- \u4ea7\u54c1\u7b80\u4ecb --><\/p>\n<div class=\"leo-module\">\n<h2>Product Overview<\/h2>\n<p>Leojoin&#8217;s Positive Displacement Isobaric Energy Recovery Device is R&#038;D and manufactured under the framework of ISO9001, ISO14001 and ISO45001 international standards.<\/p>\n<p>The device transfers the pressure energy in the high-pressure concentrated waste liquid stream of RO to the low-pressure feed water stream through direct contact of liquid piston. It features a highly streamlined structure, with the <span class=\"leo-strong\">rotor being the only moving part<\/span> inside the device.<\/p>\n<p>In the seawater desalination system, equipped with this device can <span class=\"leo-strong\">reduce the capacity of high-pressure pump by 60%<\/span> and the maximum system energy consumption by up to 60%, which is the core energy-saving equipment for seawater reverse osmosis (SWRO) process.<\/p>\n<\/div>\n<p><!-- \u4ea7\u54c1\u53c2\u6570 --><\/p>\n<div class=\"leo-module\">\n<h2>Product Parameters &#038; Models<\/h2>\n<h3>Basic Operating Limits<\/h3>\n<div class=\"leo-table-wrap\">\n<table class=\"leo-table\">\n<tr>\n<th>Product Parameters<\/th>\n<th>Operating Limits<\/th>\n<th>Product Parameters<\/th>\n<th>Operating Limits<\/th>\n<\/tr>\n<tr>\n<td>Liquid Type<\/td>\n<td>Seawater, high-salt wastewater, brackish water, etc.<\/td>\n<td>Water Supply Temperature Range<\/td>\n<td>1-49\u2103<\/td>\n<\/tr>\n<tr>\n<td>Max High-pressure Inlet Pressure<\/td>\n<td>82.7bar (8.27Mpa), 1200psi<\/td>\n<td>pH Value<\/td>\n<td>1-12<\/td>\n<\/tr>\n<tr>\n<td>Max Low-pressure Inlet Pressure<\/td>\n<td>10 bar (1Mpa), 145 psi<\/td>\n<td>Flow Range<\/td>\n<td>9-59 m\u00b3\/h<\/td>\n<\/tr>\n<tr>\n<td>Min Back Pressure<\/td>\n<td>0.8bar (0.08Mpa)<\/td>\n<td>Liquid Filtration Precision<\/td>\n<td>20\u03bcm<\/td>\n<\/tr>\n<\/table><\/div>\n<h3>Core Product Models &#038; Performance<\/h3>\n<div class=\"leo-table-wrap\">\n<table class=\"leo-table\">\n<tr>\n<th>Product Model<\/th>\n<th>Rated Efficiency (EU\/US Standard)<\/th>\n<th>Flow Range (m\u00b3\/h)<\/th>\n<th>Percolation Flow (m\u00b3\/h)<\/th>\n<th>Max Working Pressure<\/th>\n<th>EU\/US Standard Mixing Degree<\/th>\n<\/tr>\n<tr>\n<td>AL41-59<\/td>\n<td>96.8%<\/td>\n<td>40.9-59<\/td>\n<td>39.4<\/td>\n<td>82.7bar(8.27MPa)<\/td>\n<td>&lt;3%<\/td>\n<\/tr>\n<tr>\n<td>AL32-49<\/td>\n<td>96.8%<\/td>\n<td>31.8-49.9<\/td>\n<td>33.3<\/td>\n<td>82.7bar(8.27MPa)<\/td>\n<td>&lt;3%<\/td>\n<\/tr>\n<tr>\n<td>AL23-40<\/td>\n<td>96.7%<\/td>\n<td>22.7-40.9<\/td>\n<td>27.3<\/td>\n<td>82.7bar(8.27MPa)<\/td>\n<td>&lt;3%<\/td>\n<\/tr>\n<tr>\n<td>AL9-16<\/td>\n<td>95.3%<\/td>\n<td>9.1-15.9<\/td>\n<td>10.6<\/td>\n<td>82.7bar(8.27MPa)<\/td>\n<td>&lt;3%<\/td>\n<\/tr>\n<\/table><\/div>\n<\/div>\n<p><!-- \u4ea7\u54c1\u4f18\u52bf --><\/p>\n<div class=\"leo-module\">\n<h2>Product Features &#038; Advantages<\/h2>\n<div class=\"leo-advantage-list\">\n<div class=\"leo-advantage-item\">\n<h4>World-leading Performance<\/h4>\n<p>Complies with GB\/T30299-2013 national standard, EU\/US standard efficiency up to 96.8%.<\/p>\n<\/p><\/div>\n<div class=\"leo-advantage-item\">\n<h4>Innovative Structural Design<\/h4>\n<p>Only one moving part + ceramic rotor, reducing cavitation failures by more than 60%.<\/p>\n<\/p><\/div>\n<div class=\"leo-advantage-item\">\n<h4>Extreme Energy Saving<\/h4>\n<p>Reduce system energy consumption by up to 60%, lower water supply costs significantly.<\/p>\n<\/p><\/div>\n<div class=\"leo-advantage-item\">\n<h4>Low Maintenance Cost<\/h4>\n<p>Components maintenance costs reduced by more than 70%, no supply interruption risk.<\/p>\n<\/p><\/div>\n<div class=\"leo-advantage-item\">\n<h4>Localized Efficient Service<\/h4>\n<p>Timely response, covering the whole life cycle after-sales service of equipment.<\/p>\n<\/p><\/div>\n<div class=\"leo-advantage-item\">\n<h4>High Compatibility<\/h4>\n<p>Adapt to multiple liquids, supporting over 70% of global RO seawater desalination projects.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<p><!-- \u9879\u76ee\u5e94\u7528 --><\/p>\n<div class=\"leo-module\">\n<h2>Project Applications &#038; Core Value<\/h2>\n<div class=\"leo-scene-list\">\n<div class=\"leo-scene-item\">\n<h4>Municipal Water Supply<\/h4>\n<p>Application: Million-ton seawater desalination plants, municipal drinking water supply for islands and coastal cities.<\/p>\n<p class=\"core-value\">Core Value: Reduce energy consumption by 30%-60%, lower water supply costs.<\/p>\n<\/p><\/div>\n<div class=\"leo-scene-item\">\n<h4>Industrial Process Water<\/h4>\n<p>Application: Cooling\/boiler feedwater for power industry; process water for petrochemical\/chemical industry; ultrapure water for electronics.<\/p>\n<p class=\"core-value\">Core Value: Continuous stable supply, reduce operational costs throughout life cycle.<\/p>\n<\/p><\/div>\n<div class=\"leo-scene-item\">\n<h4>Ship &#038; Offshore Platform<\/h4>\n<p>Application: Freshwater self-sufficiency systems for ocean-going ships; drinking\/cooling water for offshore oil and gas platforms.<\/p>\n<p class=\"core-value\">Core Value: Compact design saves 40% space, low-energy consumption extends vessel endurance.<\/p>\n<\/p><\/div>\n<div class=\"leo-scene-item\">\n<h4>Military &#038; Emergency Relief<\/h4>\n<p>Application: Independent water supply for military bases; mobile containerized RO desalination units for post-disaster deployment.<\/p>\n<p class=\"core-value\">Core Value: Rapid deployment, compatible with Zero Liquid Discharge (ZLD) technology.<\/p>\n<\/p><\/div>\n<div class=\"leo-scene-item\">\n<h4>Zero-Carbon Water Supply System<\/h4>\n<p>Application: Integrated photovoltaic, wind and storage seawater desalination system for zero-carbon islands\/communities.<\/p>\n<p class=\"core-value\">Core Value: Mitigate energy fluctuations, contribute to carbon neutrality objectives.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<p><!-- \u670d\u52a1\u652f\u6301 --><\/p>\n<div class=\"leo-module\">\n<h2>Service Support<\/h2>\n<p>We establish a comprehensive after-sales service system covering the entire lifecycle of your devices, ensuring continuous and reliable operation, maximizing your return on investment.<\/p>\n<p>Our core services: 24\/7 technical consultation, rapid on-site maintenance, lifelong supply of spare parts, regular equipment inspection and maintenance, system upgrade optimization.<\/p>\n<p>We have built an <span class=\"leo-strong\">exclusive customer training platform<\/span> with online-offline training, covering operational standards, fault prediction, emergency response, empowering your self-service maintenance capabilities.<\/p>\n<\/div>\n<p><!-- \u8054\u7cfb\u6211\u4eec --><\/p>\n<div class=\"leo-module\">\n<h2>Contact Us<\/h2>\n<div class=\"leo-contact\">\n<p><span class=\"leo-strong\">Shandong Leojoin Environmental Protection Technology Group Co., Ltd.<\/span><\/p>\n<p>\ud83d\udccd Address: Building 1, Evergrande Fortune Center, Huaiyin District, Jinan City, Shandong Province, China<\/p>\n<p>\ud83d\udce7 E-mail: lqhb@leojoin.cn<\/p>\n<p>\ud83d\udcde Hotline: +86 400-013-0003<\/p>\n<\/p><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>About Leojoin Established in 2007, Shandong Leojoin Environmental Protection Technology Group Co., Ltd. is a national high-tech enterprise integrating the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"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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