Seawater Desalination Equipment for Reliable Water Treatment

Our seawater desalination equipment is designed to deliver high-quality fresh water from seawater using advanced reverse osmosis (RO) technology. Built for durability, efficiency, and consistent performance, these systems are widely applied in industrial, municipal, and offshore water treatment projects.

We offer three main models: FST-1 Type, FST-2 Type, and FST-Z Type, each engineered to meet specific desalination and water treatment requirements.

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FST-1 Type – Single-Stage Reverse Osmosis Desalination System

The FST-1 Type equipment utilizes reverse osmosis technology to pre-treat seawater, followed by a single-stage reverse osmosis membrane process. This system produces fresh water with a TDS (Total Dissolved Solids) ≤ 500 mg/L, meeting international potable water standards.

Key Components:

Seawater supply system (booster pump)

Multi-media filter & fine filter

Pressure regulating system

First-stage high-pressure pump

First-stage reverse osmosis membrane system

Control and monitoring instrument panel

Electronic control box

Cleaning box

All parts are installed on a common base frame for easy installation and maintenance, making it ideal for compact water treatment facilities.

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FST-2 Type – Secondary Reverse Osmosis Desalination System

The FST-2 Type equipment is a two-stage reverse osmosis desalination system. It processes the output from the first-stage RO unit through an additional reverse osmosis process, producing high-purity fresh water with TDS ≤ 150 mg/L.

Key Components:

High-pressure pump

Second-stage reverse osmosis membranes

Pipelines and valves

Operation and display control instrument panel

Electronic control box

Cleaning box

Mounted on a common base, this model provides stable performance, making it suitable for industrial water treatment and municipal water supply.

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FST-Z Type – Integrated Two-Stage Reverse Osmosis Desalination System

The FST-Z Type is an integrated seawater desalination system, combining both primary and secondary RO processes for maximum efficiency. This advanced configuration ensures rigorous purification, delivering fresh water with TDS ≤ 150 mg/L.

Key Components:

Seawater supply system (booster pump)

Multi-media filter & fine filter

Pressure regulating system

First-stage high-pressure pump

First-stage reverse osmosis membrane system

Second-stage reverse osmosis membrane system

Pipelines and valves

Operation and display control instrument panel

Electronic control box

Cleaning box

Like other models, all components are mounted on a common base, simplifying transport, installation, and long-term operation.

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Applications in Water Treatment

Our seawater desalination equipment is widely applied in:

Municipal water treatment plants

Industrial water treatment and process water supply

Coastal and island freshwater production

Offshore platforms and marine vessels

With advanced RO technology, strong durability, and reliable purification results, our systems are an excellent choice for any water treatment project that requires dependable seawater to freshwater conversion.

Technical Data

Technical Index	FST-1	FST-2	FST-Z
Water Inlet Requirements	Seawater, salinity ≤ 45000 mg/L	First-stage reverse osmosis product water, salinity ≤ 500 mg/L	Seawater, salinity ≤ 45000 mg/L
Water Inlet Pressure Requirements	0-4 bar, -2°C to 40°C	0-4 bar, 0°C to 40°C	0-4 bar, -2°C to 40°C
Product Water Requirements	Salinity ≤ 500 mg/L	Salinity ≤ 150 mg/L	Salinity ≤ 150 mg/L
Production Capacity	20-240 tons, with a design margin of 20% excess capacity	15-180 tons, with a design margin of 20% excess capacity	15-300 tons, with a design margin of 20% excess capacity
Overall Dimensions	Smaller than similar series models	Smaller than similar series models	Smaller than similar series models
Power Consumption	Within 80% of the standard model's power rating	Within 80% of the standard model's power rating	Within 80% of the standard model's power rating
Weight (Wet Weight)	1230-7500 kg, within 95% of the standard model weight requirement	260-950 kg, within 95% of the standard model weight requirement	1550-10500 kg, within 95% of the standard model weight requirement
Concentrated Water Discharge Pressure	≥ 3 bar	≥ 3 bar	≥ 3 bar
Product Water Pressure	≤ 3 bar (gauge pressure)	≤ 3 bar (gauge pressure)	≤ 3 bar (gauge pressure)
Water Inlet/Outlet Connections	Provided with matching flanges	Provided with matching flanges	Provided with matching flanges

 

Functions of the device

a) With automatic and manual two operation modes.

 

b) With a key start function;

 

c) A high-pressure pump water overpressure protection. When the first high-pressure pump water pressure exceeds the set pressure, the device automatically shuts down and sounds and light alarm;

 

d) A high-pressure pump water pressure is insufficient to protect the under pressure. When the pretreatment water supply is insufficient to cause a high-pressure pump water pressure below the set pressure, the device automatically stops and sounds & light alarm;

 

e) Two high-pressure pump water overpressure protection. When the secondary high-pressure pump water pressure exceeds the set pressure, the device automatically shuts down and sounds and light alarm:

 

f) Two produced water salinity exceeds the standard alarm. When the salt content of the secondary produced water exceeds 150mg children, the device automatically bypasses the discharge of unqualified water, and sends an alarm signal;

 

g) When the desalinated water quality control device or desalinated water disinfection device does not meet the requirements of the treated water quality, the reverse osmosis device can receive alarm signals, and switch to the unqualified water piping water through the discharge of unqualified water, the touch screen displays the alarm information.

 

Suzhou Tsingxi Technology Co., Ltd. is an equipment manufacturer, invested and held by a national high-tech membrane company Proshare Innovation Suzhou Co., Ltd, which focusing on membrane technology as the core direction of development of seawater desalination, ultra-pure water, high-end reverse osmosis, nanofiltration and material separation equipment research, development and manufacturing. The founder, Dr Lin Xiaofeng, has been awarded Suzhou Industrial Park Leading Talent, Gusu Leading Talent, Provincial Shuangchuang, and National Major Talent Project Introduction Plan, and has been granted more than 20 patents. By cooperating with Tsinghua Suzhou Environmental Innovation Research institute (SElRl) Base of SElRl, Suzhou Tsingxi Technology and setting up the headquarter in Shishan Pilot Co., Ltd. not only enhances the close relationship between industry, academia and research but also led the company to enter into a new stage of one-stop service for technology R&D, equipment manufacturing, testing and after-sales service.

 

 

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