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How Sea water Desalination Machine Turn Sea Water Into Drinkable Water

How Sea water Desalination Machine Turn Sea Water Into Drinkable Water

What Is Seawater Desalination Machine?

Seawater desalination machine uses Seawater Reverse Osmosis (SWRO) technology to remove salt, minerals, and impurities from seawater under high pressure.converting it into fresh water that can be consumed directly.
Due to the high salinity of seawater, specialized seawater RO membranes and high-pressure pumps are required;
ordinary reverse osmosis systems cannot process seawater.
                     
Feature Seawater RO (SWRO) Standard / Brackish Water RO
Feed Water Source Seawater Brackish water, tap water, or low-salinity sources
TDS of Feed Water ~35,000 ppm <5,000 ppm
Operating Pressure 55–70 bar 15–30 bar
Membrane Type High-pressure seawater RO membrane Standard RO membrane
Pretreatment Requirements Mandatory: sand filter, carbon filter; optional anti-scalant Moderate pretreatment (depends on water quality)

Seawater Desalination Machine Process

1.Feed Water & Product Water Tanks:

Stores raw seawater before treatment and collects treated freshwater.

Customers can prepare these locally or purchase nearby to reduce transportation costs.

2.Pre-treatment

Multimedia/Sand Filter (necessary)

Activated Carbon Filter (optional)
Purpose: Removes suspended solids, sand, and residual chlorine to prevent RO membrane fouling and blockage.

3.High-Pressure Pump

Pressurizes pre-treated seawater to 55–70 bar.provides enough pressure for seawater to pass through the RO membranes.

4.Seawater RO Membrane (SWRO)

Seawater passes through RO membranes.

Removes: Salts, heavy metals, bacteria, and impurities.

Outputs: Freshwater (Permeate) and Brine (Concentrated salt water).

5.Post-treatment

pH Adjustment

Mineral Addition – improves taste and ensures safe drinking water.

Optional: UV sterilization or ozone treatment.

6.Product Water

Freshwater meets drinking water standards.

Can be used directly for drinking, domestic, or industrial purposes.

Water Applications of Sea water Desalination Machine

1. Drinking Water

  • Water Quality: Meets drinking water standards, TDS ≤ 500ppm.

  • Applications: Homes, schools, hospitals, hotels, stadiums, and other public facilities.

2. Industrial Water

  • Water Quality: Low TDS, removes hardness, dissolved salts, and impurities; suitable for industrial processes.

  • Applications: Boiler feed water, food processing, electronics manufacturing, chemical production, paper and textile industries.

3. Agricultural & Irrigation Water

  • Water Quality: Moderately desalinated to reduce salt impact on crops and soil.

  • Applications: Greenhouse farming, fruit and vegetable irrigation, grain crop irrigation, aquaculture.

Types of Haiyuan Seawater Desalination Machine

  1. Household / Small Units – For home or small community drinking water.

  2. Commercial RO Machines – For hotels, schools, offices, and restaurants.

  3. Industrial Systems (50 L/h – 50 m³/h) – Customizable for industrial or municipal use.

  4. Containerized Systems – Modular, easy to transport, ideal for remote locations.

  5. Solar-Powered Systems – Off-grid freshwater supply for islands and sunny regions.

                     

Key Factors When Choosing a Seawater Desalination Machine

When selecting a seawater desalination system, the following factors are critical:

  1. Required Capacity / Flow Rate

    • Determine how much freshwater you need per hour or per day.

    • Haiyuan systems range from 50 L/h to 50 m³/h, customizable for different demands.

  2. Source Water Quality

    • Know the type of water to treat (seawater, brackish water, well water, etc.).

    • Provide TDS, turbidity, and other water quality data for proper system design.

  3. Voltage & Power Supply

    • Confirm available electricity: single-phase or three-phase, voltage (e.g., 220V, 380V), frequency (50Hz/60Hz).

    • Ensures the pump and control system operate safely and efficiently.

  4. Water Use / Application

    • Drinking, industrial, agricultural, or special applications.

    • Determines the required water treatment level and post-treatment process.

  5. Installation & Space

    • Consider location, footprint, and accessibility.

    • Containerized systems are modular and easy to transport, ideal for remote areas.

  6. Optional Features

    • Post-treatment (mineral addition, pH adjustment), UV/ozone sterilization, monitoring systems.

    • Helps meet local drinking water standards or industrial water requirements.

                     

Haiyuan Water Desalination Machine Price and Cost

The price of a seawater desalination machine mainly depends on its configuration:

  • Capacity / Flow Rate: Larger systems with higher output require bigger pumps, more membranes, and larger pre/post-treatment units.

  • Treatment Process: Additional filters, UV/ozone sterilization, or mineral addition increase cost.

  • Automation & Control: Advanced PLC systems, remote monitoring, and safety features add to the price.

  • Material & Build Quality: Corrosion-resistant materials for seawater applications (like FRP, stainless steel) can affect cost.

  • Optional Features: Containerized design, solar power integration, or custom dimensions may increase investment.

Note: Haiyuan provides customized solutions, so final pricing depends on the selected configuration and client requirements.

In summary, choosing the right system depends on your water source, required capacity, and site conditions. Haiyuan offers a range of reliable and customizable sea salt water desalination machines to meet different needs, from household units to industrial and containerized systems.

If you are interested and have a purchasing need, you can contact Haiyuan immediately to get a free quotation and professional buying guidance. Click to contact us, or directly add the following:

  • WhatsApp / WeChat / Mobile:+86 18825874379

  • Email: haiyuan@swroplant.com





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