Efficient Two-Stage Desalination
Modern marine, offshore, and energy operations demand freshwater systems that combine reliability, efficiency, and minimal environmental impact. The AQUA Blue E2 Two-Stage Freshwater Generator delivers advanced desalination technology to ensure a continuous supply of clean water, critical for vessels, rigs, and industrial facilities operating in challenging environments.
We supply, install, and maintain AQUA Blue E2 systems across the marine, offshore, and industrial energy sectors. Our expertise ensures dependable performance, global service support, and cost-effective operation wherever you are in the world.
Supply
We can supply brand new fresh water generators directly to your site or vessel. All units are quality-checked and tested to ensure they meet OEM standards.
Installation
Alfa Laval engineers ensure seamless integration into your system. Whether it’s a retrofit or part of a new installation, we handle every aspect with precision and efficiency.
Servicing
We provide full servicing, including inspections, bowl cleaning, seal replacements, and emergency repairs to keep your separator running efficiently.
About the DPU-2 System
The DPU-2 features a two-stage evaporation process engineered to maximise freshwater output while reducing energy consumption and system footprint. Its modern plate technology replaces bulkier, maintenance heavy alternatives, resulting in a compact generator that is easier to install, operate, and maintain.
The result is a highly efficient, environmentally responsible freshwater solution, purpose-built for the heavy duty demands of shipping, offshore rigs, and industrial energy facilities, without compromising on reliability or ease of use.
DPU 2
Delivers outstanding production performance for marine, offshore, and industrial operations while ensuring energy efficiency and low maintenance reliability.
- Type: Two-stage distiller (multi-effect vacuum evaporation)
- Function: Produces fresh water from seawater using waste heat
- Application: Marine vessels, offshore platforms, and other installations with continuous need for high-quality fresh/technical water
- Two-Stage Design: Dual-effect evaporation/condensation for improved efficiency
- Heating Source: Jacket water or low-pressure steam
- Construction: Corrosion-resistant materials (titanium/titanium alloy in seawater sections)
- Automation: Integrated control for water quality, pressure, and temperature
- Compact Design: Skid-mounted for simplified installation
- Capacity: ~20–100 m³/day (depending on model and seawater temperature)
- Energy Use: Lower than single-stage units thanks to two-stage heat recovery
- Operating Temp: Works with jacket water down to ~60°C
- Freshwater Quality: <2 ppm TDS (potable water standard)
- Mineraliser for drinking water hardness adjustment
- UV steriliser or chlorine dosing
- Freshwater and ejector pumps
- Salinometer for automatic diversion of off-spec water
- Higher efficiency than single-stage generators
- Reliable production of high-quality fresh water
- Compact and durable design for shipboard use
- Proven technology with simple automation
Key Benefits of the DPU-2 System
- High capacity on waste heat available.
- Simple installation due to compact design, low weight and the possibility to assemble on the spot.
- Long lifespan, the high grade corrosion resistant materials, i.e. the titanium plates, ensure a long lifespan of the equipment.
- High quality freshwater, the low content of dissolved solids (salinity) ensures the supply of pure water which can be used directly as make-up for steam boilers.
- Low operation and maintenance costs. Start-and-forget operation, combined with easy access to the interior, reduces man-hours required for operation and maintenance to a minimum.
How Can We Help?
Our expert team is here to help you choose the right solution for fresh water generation and keep it operating smoothly for years to come.
Technical Advice is always FREE from Premier.
Authentic Quality
We only supply Genuine Alfa Laval machines and high-quality spare parts.
System Expertise
We understand the challenges of both Marine and Energy applications and offer tailored solutions.
Fast Delivery
Access to real time stock levels, so we can offer quick turnaround times and accurate lead times.
Competitive Pricing
Superior products at the best price point, with special bulk pricing available. Quotes available in GBP, EURO & USD.