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E-mail
GXM7788@126.COM
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13958337766
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Xinqiao, Xiangshan County, Ningbo City, Zhejiang Province
Ningbo Xuming Pharmaceutical Equipment Co., Ltd
FSJ series secondary reverse osmosis equipment: analysis of core structural components
Date: 2025-12-30Read: 4
The FSJ series secondary reverse osmosis equipment, as a representative of modern water treatment technology, is widely used in industries such as pharmaceuticals, electronics, and food. Its efficient desalination and deep purification capabilities rely on precisely designed structural components. This article will systematically introduce the main components of the device, as shown below:
Core structural components of FSJ series secondary reverse osmosis equipment
1. Pre treatment System: Pioneer in Water Purification
The pre-treatment system is the first line of defense for equipment, aimed at removing large particle impurities, colloids, and organic matter from raw water, and protecting subsequent membrane components from pollution. Mainly includes:
•Multi media filter: composed of multiple layers of filter materials such as quartz sand and anthracite, effectively intercepting suspended solids and sediment, and reducing water turbidity.
•Activated carbon filter: uses the adsorption capacity of activated carbon to remove residual chlorine, organic matter, and odors, improve water quality and taste, and prevent damage to the membrane by oxidants.
•Softener device: When the hardness of the raw water is high, calcium and magnesium ions are removed through ion exchange to prevent membrane surface scaling and ensure stable system operation.
2. High pressure pump: power core
The high-pressure pump is the "heart" of the reverse osmosis system, responsible for pressurizing the pre treated water to 6-10 bar (higher for industrial grade) to overcome osmotic pressure and drive water molecules through membrane components. Its characteristics include:
•Variable frequency control technology: dynamically adjust pressure based on the status of filters and softeners to achieve energy conservation and consumption reduction.
•Stable output capability: Ensure efficient operation of membrane components under constant operating conditions, avoiding pressure fluctuations that affect water quality.
3. Reverse osmosis membrane module: desalination core
The membrane module is the core of the equipment, made of polyamide composite membrane (TFC) material, which has high desalination rate (up to 99%) and anti pollution properties. The structural characteristics are:
•Roll up membrane element: made by rolling multiple layers of membrane sheets, including an ultra-thin desalination layer (about 200 nanometers), a polysulfone support layer, and a polyester non-woven fabric base layer, achieving efficient separation through inlet/concentrate grid.
•Dual stage design: The first stage reverse osmosis initially removes dissolved salts and heavy metals, while the second stage reverse osmosis further purifies, significantly improving the purity of the produced water and making it suitable for high water quality scenarios.
4. Membrane shell (pressure vessel): pressure resistant carrier
Membrane shell is a pressure resistant container for loading membrane components, usually made of fiberglass reinforced plastic (FRP) or stainless steel, which needs to withstand high pressure and be corrosion-resistant. Its functions include:
•Modular design: supports multiple membrane components in series or parallel to meet different water production requirements.
•Water inlet and outlet interface: equipped with water inlet, concentrated water outlet, and central water outlet to ensure smooth water flow through the membrane component.
5. Control System and Instruments: Intelligent Center
The intelligent control system achieves automated operation, with core components including:
•PLC or microcomputer control: Integrated pressure monitoring, flow meter, and conductivity meter, real-time detection of inlet pressure, membrane front and rear pressure difference, and produced water conductivity, triggering alarms in case of abnormalities.
•Online monitoring module: can track changes in water quality and automatically adjust parameters to cope with fluctuations in raw water and improve system stability.
6. Inter segment booster pump: flow balancer
In multi-stage reverse osmosis systems, inter stage booster pumps are used to balance inter stage flow and recovery rates, prevent membrane flux decline due to uneven pressure, and ensure efficient collaboration between each stage.
7. Water production back pressure regulating device
When the water level in the production tank is higher than the system, back pressure of the production water may occur. By adjusting the valve to control the water production of the first and second stages, optimize the flux and recovery rate, and avoid damage to the membrane components.
8. Post treatment system: water quality refining
The post-processing system further optimizes the quality of the produced water, including:
•PH adjustment device: adding minerals or adjusting acidity and alkalinity to improve taste, suitable for the food and pharmaceutical industries.
•Disinfection unit: such as ultraviolet sterilizer, to ensure that the microbiological indicators of the produced water meet the standards and ensure water safety.
Conclusion
The FSJ series secondary reverse osmosis equipment, with its precise structural components and intelligent design,Provide reliable water solutions for various industries，From pre-processing to post-processing, each component plays its own role in ensuring the high purity and stability of the produced water.