Reverse Osmosis Membrane
YIME Brand
YIME originated from Dongguan Yixuan Environmental Protection Technology Co., Ltd., a company established in 2006 with extensive engineering experience in electroplating wastewater treatment and industrial wastewater recycling. Over the years, we have successfully delivered a wide range of wastewater treatment projects across different industries, building strong expertise in complex water treatment applications.
At the core of every wastewater treatment system lies the reverse osmosis (RO) membrane system. To better support system integration and adapt to diverse operating conditions, we began developing our own membrane products. This led to the establishment of our subsidiary brand, YIME, dedicated to membrane technology innovation.
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YIME has achieved full-process independent development and manufacturing capabilities, covering membrane material formulation, membrane element and module structural design, as well as the core equipment used in membrane production. This vertical integration ensures consistent quality, flexibility, and reliability across all products.
YIME Reverse Osmosis Membrane
The YIME brand primarily focuses on two key areas: reverse osmosis (RO) membranes and specialty membranes. Within the RO membrane product portfolio, it covers residential, commercial, and industrial applications. The industrial RO membrane line is further categorized into four series based on different operating conditions, including Low Pressure (LP), Ultra-Low Pressure (ULP), Fouling-Resistant (FR), and Seawater Desalination (SW) membranes. This comprehensive product range is designed to meet diverse application needs, from standard water treatment to highly demanding industrial processes and seawater desalination scenarios.
Common Types
We offer the following Product
Low Pressure （LP）membranes
The low-pressure RO membrane series is suitable for desalination treatment of feed water with a salt concentration of up to 2,000 mg/L, using municipal tap water or groundwater as the raw water source.
Ultra-Low(ULP) Pressure membranes
Suitable for feed water with up to 1,500 mg/L salt concentration. Widely used in food production, municipal water supply, purified water systems, irrigation, and second-pass RO systems.
Fouling Resistant (FR)
membranes
Suitable for feed water with up to 10,000 mg/L salt concentration. Widely used in industrial wastewater treatment and reuse, including power, steel, electroplating, petrochemical, coal chemical, and landfill leachate applications.
Seawater Desalination
(SW) membranes
Suitable for seawater, brackish water, and high-salinity water. Used in desalination, boiler feed water, industrial water treatment, wastewater reuse, and landfill leachate treatment.
RO Membrane Manufacturing Process
Selecting the right YIME RO membrane starts with understanding the feed water TDS (Total Dissolved Solids). When TDS exceeds 10,000 ppm, seawater RO membranes (SW series) are recommended to ensure stable performance under high salinity conditions. For water sources with TDS below 10,000 ppm, further selection depends on water quality.
For heavily polluted or fouling-prone water sources, such as wastewater or certain surface water, the FR (Fouling Resistant) series is recommended to enhance system stability and extend membrane lifespan. For normal water sources, selection can be based on performance requirements: the LP series is ideal for balancing high rejection and low energy consumption; the ULR series is suitable for ultra-low pressure operations; and the MP series is designed for systems requiring higher permeate flow.
By matching membrane selection with water quality and system needs, YIME provides efficient, stable, and cost-effective solutions.
Reverse Osmosis Membranes Construction
Most commonly used RO membranes are typically composed by a thin film composite membrane consisting of three layers: a polyester support web, a microporous polysulfone interlayer and an ultra think polyamide barrier layer on the top surface.
Thin film composite membranes are packed in a spiral wound configuration. Such element contains from one to more than 30 sheets, depending on the element diameter and element type.
In membrane systems the elements are placed in series inside of a pressure vessel.
The concentrate of the first element becomes the feed to the second element and so on. The permeate tubes are connected with interconnectors (also called coupler), and the combined total permeate exits the pressure vessel at one side of the vessel.
The membranes are wound around a perforated permeate pipe.
Two membrane sheets are glued together on three sides, only with an opening towards the permeate pipe. The feed water flows across the membrane surface from one side to the other. Due to the high pressure in the vessel, a part of the water penetrates the membrane and this permeate water can only leave the PV through the permeate pipe, while the rest of the water - now more concentrated - leaves on the other side of the membrane , just flowing across the sheet.
Precautions for use of Reverse Osmosis Membrane
Changing the pre and post-filters regularly is key.
Pre-filters should be replaced approximately every 6 to 12 months. Most post-filters last for 1-2 years.
RO membranes typically last up to 2 to 5 years (if you replace the pre-filters on schedule).
You should clean/sterilize your system with each filter replacement; Ideally 1-2 times a year.
Check the storage tank pressure with a low-pressure gauge at least once a year. Measure the pressure when the tank is empty. 6-8 psi is ideal. Re-pressurize using a bicycle pump if necessary.
Drain the RO tank every two weeks and let it fill again if you are not using a large amount of water.
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We're professional reverse osmosis membrane manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale reverse osmosis membrane for sale here from our factory. For price consultation, contact us.
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