Custom Purification System

25LPH Solar-Powered Seawater Desalination RO System | Off-Grid Fresh Water Solution

25LPH Solar-Powered Seawater Desalination RO System | Off-Grid Fresh Water Solution

Background

In remote coastal areas, islands, fishing vessels, and other off-grid settings with no grid access and limited fresh water, the 25LPH Solar-Powered Seawater Desalination RO System stands as the ultimate eco-friendly and practical solution.
Dongguan Haiyuan Water Treatment’s HY-25L system runs entirely on 100% renewable solar energy, turning raw seawater (35000–38000ppm TDS) into safe, drinkable fresh water at a steady 25 liters per hour.
With a compact structure and fully automatic operation, we engineered this system specifically for harsh marine environments, delivering reliable off-grid fresh water support for small civil, commercial, and emergency use cases.

Core Advantages

1. 100% Solar-Powered, Pure Off-Grid Operation

We equip the system with a high-capacity 9×550W photovoltaic array and a 4×12V 200AH battery storage system, so it runs entirely on renewable solar energy—no external grid power required.

We integrate a 10kW inverter and solar controller to deliver stable power to the equipment, even under inconsistent sunlight.
Its energy storage battery keeps water production going after sunset, making it the ideal off-grid freshwater solution for sun-rich remote areas.

2. 99.5% High Desalination Rate for Safe Potable Water

We use a premium VONTRON SW-2521 RO membrane that achieves a single-pass desalination rate of up to 99.5%, so the system effectively removes salt, heavy metals, bacteria, and other harmful impurities from seawater.

The resulting water fully meets human drinking standards, so you can use it directly for drinking, cooking, and basic sanitation—perfectly satisfying the core water needs of islands and remote coastal communities.

3. Compact Design, Easy Installation and Transportation

With an installation dimension of only 0.8m(L)×0.5m(W)×0.55m(H), the system covers a small area and can be flexibly installed in narrow spaces such as fishing boats, small islands, remote construction sites and outdoor huts. With a transportation volume of just 5 cubic meters, it can be easily delivered to various remote off-grid areas by land and sea transportation, suitable for portable and mobile use needs.

4. Marine-Grade Corrosion-Resistant Material, Adapted to Harsh Marine Environments

We build all core components from marine-grade, corrosion-resistant materials.

First, the 316L stainless steel pump body and high-pressure pipelines resist salt spray and rust.
Additionally, the FRP RO membrane housing is lightweight and pressure-resistant, ideal for high-pressure operation.
Finally, the polyethylene filter housing is anti-fouling and easy to clean.
As a result, the system runs stably for years in high-salt, high-humidity marine environments, with minimal daily maintenance.

5. Fully Automatic Control, No Professional On-Site Attendance Required

We integrate a fully automatic electrical control system with intelligent protections like overcurrent and overheat safeguards.

This means the system operates automatically from start to finish—from seawater intake and filtration to RO treatment and pure water output.

No on-site professional technical attendance is needed.

Moreover, daily maintenance only involves simple filter element replacement.

This makes operation easy and drastically cuts operational and management costs.

6. Complete Turnkey Solution, One-Stop Implementation

As an all-in-one unit, the system includes a full set of 25LPH RO water treatment core devices and a matching solar power supply system.

No extra accessories are required.

Furthermore, we pre-assemble the RO skid and design the process flow to standardized specifications.

Once installed on-site, the system can be quickly commissioned and started up.

In turn, this delivers a worry-free, efficient one-stop implementation solution for customers.

System Process Flow

Raw Water Tank → Raw Water Pump → Precision Double Filtration → High-Pressure Pump → RO Membrane Skid → Pure Water Tank

Note: The raw water tank and pure water tank shall be provided by the customer. We will provide full-process technical guidance on tank matching, pipeline connection and equipment commissioning.

Applicable Scenarios

This 25LPH solar seawater desalination system is an ideal off-grid fresh water solution for areas with abundant sunlight and scarce fresh water, and is widely applicable to:
  • Remote coastal islands: Daily water supply for island residential areas, small resorts and island villages
  • Marine vessels: On-board fresh water supply for fishing boats, yachts and small offshore operation platforms
  • Off-grid operation areas: Domestic water supply for remote coastal construction sites, mining camps and coastal defense posts
  • Emergency support: Emergency fresh water supply for coastal disaster-stricken areas and temporary operation sites
  • Small-scale agricultural and livestock use: Irrigation and livestock drinking water supply in coastal arid areas

Contact Us

For detailed technical consultation, customized solution design or on-site project support, please contact our professional sales team immediately:

Mobile/WhatsApp: +86 13544774483

E-mail: bella@swroplant.com

Tel: +86-769-887860

Core Keywords: 25LPH solar seawater desalination, solar RO system for seawater, off-grid solar desalination equipment, 25LPH solar RO water treatment, island solar seawater desalination, portable solar desalination for vessels, solar-powered reverse osmosis desalination





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