Follow frequency：69order
Product type：Desalination of seawater
Listing time：2026-03-23 08:49:07
DESCRIPTION：Leojoin's Positive Displacement Isobaric Energy Recovery Device
Telephone：400-013-0003
Positive Displacement Isobaric Energy Recovery Device - Leojoin EnvironmentalPositive Displacement Isobaric Energy Recovery Device
Shandong Leojoin Environmental Protection Technology Group Co., Ltd. | National High-Tech Enterprise
About LeojoinR&D BackgroundProduct OverviewProduct ParametersProduct AdvantagesProject ApplicationsService SupportContact Us
About Leojoin
Established in 2007, Shandong Leojoin Environmental Protection Technology Group Co., Ltd. is a national high-tech enterprise integrating the R&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.
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 (Africa, the Middle East, South America, Malaysia, Indonesia, Australia, Poland, Italy, Tanzania, etc.) and all provinces in China.
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 Uphold Responsibility for Every Trust.
R&D Background
Faced with the increasingly severe water resource challenges, the utilization of seawater desalination, high-salt wastewater, brackish water and other related resources has become an important direction of industrial development. However, the core energy-saving equipment — the positive displacement isobaric energy recovery device, due to its extremely high technical barriers, has long relied on imports, and is a veritable "bottleneck" technology and product in this field in China.
The import dependence has brought severe challenges: high procurement costs, restricted key technologies, slow service response, and fragile supply chain security, which have seriously restricted the economic benefits of domestic related projects.
Facing the industrial bottleneck head-on, Leojoin is driven by technological innovation and takes breaking the bottleneck as its mission. After years of painstaking research, we have successfully overcome technical difficulties and developed a positive displacement isobaric energy recovery device with complete independent intellectual property rights. We are committed to providing customers with high-performance, cost-optimized and efficient domestic solutions, breaking the dependence on imports, promoting cost reduction and efficiency increase in the industry, and driving emission reduction.
Product Overview
Leojoin's Positive Displacement Isobaric Energy Recovery Device is R&D and manufactured under the framework of ISO9001, ISO14001 and ISO45001 international standards, committed to providing customers with high-quality water resource treatment solutions.
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 to realize pressure exchange. It features a highly streamlined structure, with the rotor being the only moving part inside the device.
The ceramic rotor is installed in the cavity formed by the sleeve and two end covers, with precise clearances to generate a nearly frictionless hydrodynamic bearing. In the seawater desalination system, equipped with this device can reduce the capacity of high-pressure pump by 60% and the maximum system energy consumption by up to 60%, which is the core energy-saving equipment for seawater reverse osmosis (SWRO) process.
Product Parameters & Models
Basic Operating Limits
| Product Parameters | Operating Limits | Product Parameters | Operating Limits |
|---|
| Liquid Type | Seawater, high-salt wastewater, brackish water, etc. | Water Supply Temperature Range | 1-49℃ |
| Max High-pressure Inlet Pressure | 82.7bar (8.27Mpa), 1200psi | pH Value | 1-12 |
| Max Low-pressure Inlet Pressure | 10 bar (1Mpa), 145 psi | Flow Range | 9-59 m³/h |
| Min Back Pressure | 0.8bar (0.08Mpa) | Liquid Filtration Precision | 20μm |
Core Product Models & Performance
| Product Model | Rated Efficiency (EU/US Standard) | Flow Range (m³/h) | Percolation Flow (m³/h) | Max Working Pressure | EU/US Standard Mixing Degree |
|---|
| AL41-59 | 96.8% | 40.9-59 | 39.4 | 82.7bar(8.27MPa) | <3% |
| AL32-49 | 96.8% | 31.8-49.9 | 33.3 | 82.7bar(8.27MPa) | <3% |
| AL23-40 | 96.7% | 22.7-40.9 | 27.3 | 82.7bar(8.27MPa) | <3% |
| AL9-16 | 95.3% | 9.1-15.9 | 10.6 | 82.7bar(8.27MPa) | <3% |
Product Features & Advantages
World-leading Performance
Complies with GB/T30299-2013 national standard, with efficiency, mixing degree, noise and other indicators reaching international leading level, the maximum EU/US standard efficiency is 96.8%.
Innovative Structural Design
Only one moving part + ceramic rotor structure, reducing cavitation failures by more than 60% and greatly improving equipment stability and service life.
Extreme Energy Saving
Reduce system energy consumption by up to 60% and high-pressure pump capacity by 60%, significantly lower water supply costs and improve project economic benefits.
Low Maintenance Cost
Fully independent production and process optimization, reducing component maintenance costs by more than 70%, no supply interruption risk for spare parts.
Localized Efficient Service
Timely response, self-built production lines can flexibly provide various components, covering the whole life cycle after-sales service of equipment.
High Compatibility
Adapt to seawater, high-salt wastewater, brackish water and other liquids, supporting more than 70% of reverse osmosis seawater desalination projects worldwide.
Project Applications & Core Value
Municipal Water Supply
Application: Million-ton seawater desalination plants in arid regions, municipal drinking water supply for islands and coastal cities.
Core Value: Reduce system energy consumption by 30%-60%, significantly lower water supply costs, support over 70% of global RO seawater desalination projects.
Industrial Process Water
Application: Cooling/boiler feedwater for power industry; process water for petrochemical/chemical industry; front-end treatment for electronics/semiconductor ultrapure water; raw water for food & beverage production.
Core Value: Continuous stable supply, meet 24/7 industrial-grade requirements, reduce operational costs throughout the life cycle.
Ship & Offshore Platform
Application: Freshwater self-sufficiency systems for ocean-going cruise ships, cargo ships, warships; drinking/cooling water for offshore oil and gas platforms.
Core Value: Compact design saves 40% space, low-energy consumption drive extends vessel endurance effectively.
Military & Emergency Relief
Application: Independent water supply for military bases in remote areas/islands; mobile containerized RO desalination units for post-disaster rapid deployment.
Core Value: Rapid deployment for extreme environments, compatible with Zero Liquid Discharge (ZLD) technology, environmental compliance.
Zero-Carbon Water Supply System
Application: Integrated photovoltaic, wind and storage seawater desalination system, sustainable water supply for zero-carbon islands/communities.
Core Value: Mitigate energy fluctuations, enhance off-grid system stability, contribute to global carbon neutrality objectives.
Service Support
Comprehensive After-sales Support System
We are committed not only to delivering cutting-edge, energy-efficient equipment, but also to a customer-centric approach by establishing a comprehensive after-sales service system that covers the entire lifecycle of your devices. This ensures your systems operate continuously and reliably, maximizing your return on investment.
Our core service commitments include 24/7 technical consultation, rapid on-site maintenance, lifelong supply of spare parts, regular equipment inspection and maintenance, and system upgrade optimization.
We have built an exclusive customer training platform with a comprehensive online-offline multidimensional training system, covering operational standards, fault prediction, and emergency response, empowering customer teams to enhance their self-service maintenance capabilities.
Professional Escort, Eternal Service — Leojoin always provides full-process technical and service support for your water resource treatment projects.
Contact Us
Shandong Leojoin Environmental Protection Technology Group Co., Ltd.
📍 Address: Building 1, Evergrande Fortune Center, Huaiyin District, Jinan City, Shandong Province, China
📧 E-mail: [email protected]
📞 Hotline: +86 400-013-0003
© 2025 Shandong Leojoin Environmental Protection Technology Group Co., Ltd. All Rights Reserved.
Positive Displacement Isobaric Energy Recovery Device - Independent Intellectual Property Rights | Break Import Dependence
R&D Support: Leojoin Environmental R&D Center
