FWG

Marine Fresh Water Generator FWG | Seawater Desalination System for Ships

Our Marine Fresh Water Generator FWG utilizes globally advanced Reverse Osmosis Membrane Technology to efficiently transform seawater into clean, odor-free, and bacteria-safe drinking water that complies with the National Drinking Water Standard (GB5749-2006).

Ideal for fishing vessels, steamships, and coastal installations where freshwater scarcity is a challenge, this system effectively removes minerals, microorganisms, bacteria, and other impurities. It delivers high-purity freshwater suitable for drinking, cooking, and sanitary use onboard.

The system is equipped with a fully automatic pre-filtration unit featuring advanced multiport valves, enabling efficient large-flow backwashing and rinsing without manual intervention. All piping and the main body are constructed with corrosion-resistant materials, ensuring long service life and reliable performance in marine environments.

The reverse osmosis unit incorporates high-quality membrane elements and energy-saving design principles, significantly reducing power consumption while maintaining high output. An intelligent monitoring system provides real-time operational data, ensuring stable and safe performance under various conditions.

Key components such as flow and pressure controllers, atmospheric valves, and blow-down piping are installed to enhance system durability and user convenience.

FWG Main Components & Introduction

Feed Pump
- Qty: 1
- Flow Rate: 4m³/h
- Head: 30m
- Power: 0.75KW
- Provides backwashing and rinsing for multi-media and precision filters.
Multi-Media Filter
- Qty: 1
- Dimensions: Ø350×1410mm
- Output: >3m³/hr
- Pressure: 0.4MPa
- Effectively removes algae, suspended solids, minerals, and large particles. Includes manual rinsing and backwashing functions to prevent clogging.
Precision Filter
- Equipped with 10μm and 5μm filter cartridges to prevent leakage and protect RO membranes from particles larger than 5μm.
High-Pressure Pump
- Provides necessary pressure to overcome osmotic resistance and ensure designed productivity.
Reverse Osmosis Unit
- Qty: 1 set
- Core desalination component that removes soluble salts, colloids, organics, and microbes. Includes automatic valves and monitoring instruments for long-term stable operation.
Cleaning System
- Qty: 1 set
- Periodically cleans the RO membrane using chemical agents to remove accumulated contaminants and restore performance.
Control System
- Schneider electrical components with PLC control module. Features an on-site spray-coated steel control cabinet with user-friendly interface.

Technical Parameters

Raw Water
Source: ≤36,000 mg/L
Temperature: 5–45°C
Inlet Flow: 4.47 m³/h
Product Water
Daily Output: 30 m³/D
Recovery Rate: 28%
Desalination Rate: ≥99.5%
Output TDS: ≤500 mg/L
Operating Pressure: <6.5 MPa
Power
Voltage: 380V/50Hz/3-phase
Total Power: 12.1 KW
Protection Level: IP54
Operating Environment
Temperature: 0–45°C
Humidity: 20–90%