LPE is a leading expert in pressure driven membrane processes (MF/UF/NF/RO) process in Thailand, with decades of hands-on experience in the design, fabrication, and implementation of water treatment systems utilizing pressure-driven membrane technologies. We are proud to be among the first Thai companies to independently design and install full-scale Reverse Osmosis (RO) systems within the country. This achievement laid an important foundation for the adoption and application of membrane filtration technologies across a wide range of industries, including Food & Beverage, Pharmaceuticals & personal care products, power plants & petrochemicals and microelectronics.
Pressure driven membrane processes (MF/UF/NF/RO) filtration uses hydraulic pressure and a semi-permeable membrane to separate a feed stream into permeate and retentate. Separation occurs through size exclusion and solute-membrane interactions, enabling effective removal of suspended and dissolved components-especially.
Dead-end filtration involves feed flowing perpendicular to the membrane surface, where solids accumulate as a cake layer, causing faster fouling. In contrast, cross-flow filtration has feed flowing tangentially along the membrane surface, generating both permeate and concentrate streams, while shear force helps sweep particles away, resulting in slower fouling.
Each type of membrane—Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF), and Reverse Osmosis (RO)—targets different particle sizes and dissolved substances, making them suitable for a wide range of industrial water treatment and process separation applications.
Understanding the distinction between the four main types of membranes is essential for selecting the right solution for your application. As the pore size decreases, the required Operating Pressure increases to overcome resistance and osmotic pressure.
Membrane materials play an important role in process performance, cleaning strategy, chemical compatibility, membrane lifetime, and total operating cost. LPE supports customers in selecting suitable membrane materials based on process conditions, feed composition, separation targets, and application requirements.
Organic membranes, commonly known as polymeric membranes, are widely used in industrial separation processes due to their broad availability, flexibility in configuration, and cost-effectiveness. They are commonly applied in water treatment, food and beverage processing, wastewater treatment, and general liquid separation applications. Examples of organic membrane materials include: PES, PVDF, PA, PP, PTFE, Cellulose acetate.
Inorganic membranes are made from robust materials such as ceramic, metallic, carbon-based, or glass-based structures. They are suitable for demanding applications that require high chemical resistance, high temperature tolerance, mechanical durability, and strong cleaning capability.
A ceramic membrane is an inorganic membrane manufactured from ceramic materials such as alumina, zirconia, titania, and silicon carbide (SiC). These membranes are known for their exceptional mechanical strength, chemical resistance, and long operational life.
Membrane range is specified as micron and molecular weight cut off starting from 0.1-1.4 micron in MF, 15-300 kg/mol in UF and 1-10 kg/mol in fine.
LPE applies ceramic membrane technology for challenging applications such as beverage clarification, bacteria reduction, fermentation broth treatment, product recovery, oily wastewater treatment, and water reuse.
With expertise in process evaluation, pilot testing, membrane selection, and system design, LPE supports customers from feasibility study to industrial-scale implementation.
Explore LPE’s membrane-based process solutions for industrial applications.
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Microfiltration acts as the primary physical barrier within the membrane filtration spectrum, designed to remove suspended solids, large biological contaminants, and particulate matter.
Microfiltration Applications:
Ultrafiltration membranes bridge the gap between MF and NF, focusing on the separation of specific molecular weights (MWCO) and high-level disinfection.
Ultrafiltration Applications:
Often called “Loose RO,” NF is unique because it can selectively reject multivalent ions (like Calcium and Magnesium) while allowing some monovalent salts to pass.
Nanofiltration Applications:
RO provides the highest achievable rejection level, effectively removing nearly all dissolved solids, salts, and minerals.
In process applications beyond water treatment, RO can be applied for partial concentration of liquids under ambient temperature conditions.
Reverse Osmosis Applications:
