Energy Recovery Device

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+971 52 447 0640

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Description

The Ultratec Energy Recovery Device is engineered to recover up to 50% of the energy in high-pressure RO concentrate streams and reuse it to pressurize incoming feedwater. The device uses a Rotary Pressure Exchanger (PX) technology, widely used in seawater and brackish water RO plants, ensuring high efficiency and long-term reliability.

This system is suitable for:

Seawater Reverse Osmosis (SWRO) plants
High-recovery Brackish Water Reverse Osmosis (BWRO) plants
Industrial and municipal RO facilities
The ERD is skid-mounted, compact, and compatible with existing RO infrastructure, providing a plug-and-play solution with minimal maintenance.

Process Design & Operating Philosophy

The ERD captures high-pressure energy from the concentrate stream and transfers it directly to the feedwater.
Designed for continuous operation, it maintains stable hydraulic performance across varying flow rates.
Reduces high-pressure pump energy demand, cutting operational power costs by up to 50%.
Includes automatic monitoring of pressure, flow, and torque to protect membranes and pumps.
Operates reliably under variable feedwater conditions, including temperature and salinity fluctuations.

Design Basis & Engineering Assumptions

Parameter	Design Basis
Feedwater TDS	Up to 45,000 mg/L (seawater) / Up to 12,000 mg/L (brackish water)
Flow Rate	5 – 120 m³/h (customizable per plant)
Operating Pressure	50 – 70 bar (7.25 – 10.15 MPa)
Recovery Rate	40 – 60% typical for SWRO/BWRO
Operating Temperature	5 – 45°C
pH Range	4 – 9
Power Supply	220–480V / 50–60 Hz (for monitoring and control)
Device Efficiency	95 – 98% energy transfer
System Type	Continuous pressure energy recovery with rotary PX technology

Final parameters are verified based on feedwater analysis and site-specific requirements.

System Configuration

Component	Specification
Rotary Pressure Exchanger	High-efficiency PX rotor with ceramic-coated surfaces
High-Pressure Feed Pump Integration	Compatible with existing feed pump design
Control & Monitoring	Flow, pressure, and torque sensors with digital display
Piping	SUS304 stainless steel, high-pressure rated
Frame	Skid-mounted stainless steel, pre-assembled for plug-and-play installation
Seals & Bearings	Low-maintenance, corrosion-resistant materials for seawater operation

Pretreatment & Integration Requirements

To ensure optimal ERD performance:

Feedwater pretreatment (sand filters, multimedia, carbon filters) is recommended to remove suspended solids.
RO membranes should be protected with antiscalants and proper pH adjustment.
Avoid high iron, manganese, or organics that could increase abrasion or fouling.
Integration with upstream RO feed pump and downstream high-pressure lines is essential.
Recommended for both new RO plants and retrofitting existing systems for energy savings.

Models

Model Number	Flow Rate (m³/h)	Recovery Assistance	Max Operating Pressure (bar)	Dimensions (L x W x H, cm)	Approx. Weight (kg)
UT-ERD-5	5	5 – 10%	60	120 x 80 x 120	150
UT-ERD-10	10	10 – 15%	60	140 x 90 x 130	220

Features

Standard Features:

High-efficiency rotary PX for energy recovery
Up to 98% energy transfer efficiency
Robust, corrosion-resistant construction for seawater and brackish water
Continuous operation with minimal maintenance
Compatible with most commercial and industrial RO systems
NEMA 12 control enclosure for monitoring and diagnostics

Available Options:

SCADA integration for centralized monitoring
Custom flow and pressure ranges for specific plant requirements
Automated flushing and monitoring systems
Containerized or skid-mounted configurations for modular installations

Applications

Seawater Reverse Osmosis (SWRO) plants
Brackish Water Reverse Osmosis (BWRO) plants
Industrial water treatment for manufacturing, food & beverage, and power plants
Municipal water desalination projects
Retrofitting existing RO plants to reduce energy costs and carbon footprint

ENERGY RECOVERY DEVICE

An Energy Recovery Device helps to recover and reuse high-pressure energy in RO systems, reducing operational costs and environmental impact.

Related Products

Ultra Tec offers a complete range of engineered water treatment systems that complement and integrate seamlessly with this product. These related systems are designed to support pretreatment, desalination, polishing, and specialized water quality requirements across industrial, commercial, and infrastructure projects.