ROL-4780 A High-Capacity Reverse Osmosis System for Industrial Water Purification

The ROL-4780 is a key model in the ROL Series Commercial Reverse Osmosis System developed by Wuxi Fenigal Science & Technology Co., Ltd. (FG Water Technologies), specifically engineered to meet industrial water purification needs. As a dedicated reverse osmosis system, it leverages advanced reverse osmosis technology—pressurizing tap or well water to force it through a semi-permeable membrane—to remove a large majority of contaminants, producing low dissolved solids water essential for various industrial and commercial applications.

With a permeate flow rate of 200,000 GPD (equivalent to 760 M³/D), the ROL-4780 stands out for its robust water treatment capacity, making it suitable for scenarios requiring consistent and high-volume purified water. It is equipped with 4 pressure vessels and 28 units of 8” TFC spiral wound membranes— a core component of its efficient filtration. The spiral membrane configuration, as detailed in the diagram within the original document (located in the section explaining "Spiral Membrane Configuration"), involves one or more membrane envelopes wound around a perforated central tube; permeate passes through the membrane into the envelope, then spirals inward to the central tube for collection, ensuring effective contaminant removal and purified water collection.

In terms of power and control, the ROL-4780 features a motor with a rating of 30 kW (50 Hz) and 22 HP (60 Hz), paired with a stainless steel multi-stage pump with a TEFC motor to deliver reliable pressure for the reverse osmosis process. The reverse osmosis system also includes a PLC-based control panel with programmable time delay and set points, an HMI screen for intuitive operation, and essential safety and monitoring components such as low and high pressure switches, liquid-filled pressure gauges, a permeate conductivity monitor, and permeate & concentrate flow meters. These elements work together to maintain stable system operation, enable real-time tracking of water quality and flow, and ensure safe and efficient performance.

For installation and spatial planning, the ROL-4780 has dimensions of 300×72×80 inches (or 762×183×203 cm) and an approximate weight of 4700 kg (2136 lbs), requiring appropriate space and structural support. It adheres to standard voltage codes applicable to the entire ROL range, including 335 (380v, 3ph, 50hz), 435 (400/415v, 3ph, 50hz), and 436 (460v, 3ph, 60hz), ensuring compatibility with different electrical systems across regions.

When it comes to operating conditions, the ROL-4780, like other models in the ROL Series reverse osmosis system, follows strict input water requirements: a maximum feed water temperature of 42°C, feed water TDS ranging from 0-2,000 ppm (with equipment upgrade available for TDS up to 5,000 ppm by lowering recovery), a pH tolerance range of 3-11, maximum iron content of 0.05 ppm, and mandatory removal of hydrogen sulfide and turbidity. Feed water pressure should be 20 to 80 psi, while the operating pressure for the reverse osmosis process is 150 to 250 psi. If feed water hardness exceeds 1 GPG, a water softener (an available option for the system) is required to prevent scaling and maintain membrane efficiency.

The ROL-4780 reverse osmosis system finds application in diverse fields such as semiconductor manufacturing, boiler feed water supply, pharmaceutical production, food processing, and municipal water treatment, where high-quality purified water is critical. It can also be paired with optional components like remote monitoring, feed water conductivity/pH/ORP monitors, membrane cleaning skids, or chemical dosing systems to further enhance its functionality and adapt to specific user needs. It is important to note that product pictures in the document are for reference only, and the final ROL-4780 reverse osmosis system may vary based on actual design requirements.