Fully Automatic Reverse Osmosis Ultrafiltration Equipment for Reducing Salinity and Explosion-proof Purification

Product description

1. Pretreatment Section
   • Multimedia Filter: It usually contains layers of materials such as quartz sand, anthracite coal, and garnet. Its main function is to remove large suspended solids, turbidity, and some colloidal substances from the raw water, protecting the subsequent membrane components.
   • Activated Carbon Filter: Made of activated carbon, it can adsorb organic matter, residual chlorine, odors, and colors in the water. Residual chlorine is especially harmful to reverse osmosis membranes, and the activated carbon filter plays a crucial role in removing it.
   • Softener (Optional): When the raw water has a high hardness, a softener filled with ion exchange resins can be installed. It exchanges calcium and magnesium ions in the water with sodium ions, reducing water hardness and preventing scale formation on the membranes.
   • Precision Filter: With a filtration accuracy of usually 5 microns or less, it further removes fine particles and suspended matter in the water to ensure that the water entering the ultrafiltration and reverse osmosis systems meets the requirements.
2. Ultrafiltration Module
   • Ultrafiltration Membranes: These membranes have a pore size in the range of 0.01 – 0.1 microns. They can effectively remove bacteria, viruses, colloids, macromolecular organic substances, and some suspended solids from the water. The ultrafiltration process is a preliminary purification step that reduces the load on the reverse osmosis system.
   • Membrane Housing: Made of explosion-proof materials (such as special stainless steel or explosion-proof engineering plastics) to ensure safety in potentially explosive environments. It holds the ultrafiltration membranes and provides a sealed space for the filtration process.
3. Reverse Osmosis Module
   • Reverse Osmosis Membranes: The core components for salinity reduction. Reverse osmosis membranes have extremely small pores, allowing only water molecules to pass through while effectively blocking dissolved salts, heavy metals, and most organic compounds. This significantly reduces the salinity of the water.
   • High-Pressure Pump: It provides the necessary pressure to drive the water through the reverse osmosis membranes. In an explosion-proof design, the high-pressure pump is also equipped with explosion-proof features, such as explosion-proof motors and enclosures.
   • Concentrate Discharge System: Since reverse osmosis produces a certain amount of concentrated water with a higher salt content, a concentrate discharge system is set up to properly handle this concentrated water, usually with flow control valves to adjust the discharge ratio.
4. Automatic Control System
   • Sensors: Include pressure sensors, flow sensors, conductivity sensors, and turbidity sensors. These sensors monitor the operation parameters of the system in real-time, such as water pressure, flow rate, water quality (measured by conductivity and turbidity), and transmit signals to the control unit.
   • Programmable Logic Controller (PLC): As the control center of the system, the PLC receives signals from the sensors and controls the operation of pumps, valves, and other components. It can automatically start and stop the system, adjust the flow and pressure, and initiate cleaning and maintenance procedures according to preset conditions. In an explosion-proof environment, the PLC is also designed to be explosion-proof.
5. Explosion-proof Design Elements
   • Electrical Components: All electrical components, including motors, control panels, and sensors, are designed to be explosion-proof. They are usually enclosed in explosion-proof enclosures that can prevent the ignition of explosive gases or vapors in the surrounding environment.
   • Material Selection: The equipment housing and relevant parts are made of explosion-proof materials, which can withstand potential explosions and prevent the spread of flames or sparks.

1. Pretreatment: Raw water first enters the pretreatment section, where it is filtered through multimedia filters, activated carbon filters, and other devices to remove various impurities. This pre-treated water then enters the precision filter for further fine filtration.
2. Ultrafiltration: The water from the precision filter enters the ultrafiltration module. Under the action of pressure, water molecules and small substances pass through the ultrafiltration membranes, while larger contaminants are retained. The ultrafiltration effluent then enters the reverse osmosis system.
3. Reverse Osmosis: In the reverse osmosis module, the high-pressure pump provides pressure to force the water through the reverse osmosis membranes. Dissolved salts and other impurities are effectively removed, and the purified water (permeate) is collected, while the concentrated water is discharged through the concentrate discharge system.
4. Automatic Control: The sensors continuously monitor the operation of the system. When the parameters deviate from the set values, the PLC automatically adjusts the operation of the system, such as adjusting the pump speed, opening or closing valves, and initiating cleaning procedures to ensure the stable and efficient operation of the equipment.m

1. Industrial Processes: In industries such as petrochemicals, where there are potential explosive environments and a need for high-quality water with reduced salinity for processes like cooling water treatment, boiler feed water preparation, and chemical synthesis.
2. Marine and Offshore Applications: On ships or offshore platforms, where seawater needs to be desalinated to provide fresh water for living and production. The explosion-proof design is important in these environments where there may be flammable gases present.
3. Hazardous Chemical Production: In factories that produce or handle hazardous chemicals, where the water treatment equipment needs to operate safely in an explosive environment while providing purified water for various production needs.