How it Works: Membrane Filtration & Spiral Wound Membranes

Membrane Technology: The Basics

Separating a Mixture 
Liquid filtration, in the most basic sense, is the separation of a mixture. Synder Filtration's medium for such separations are polymeric membranes.  Membranes serve as a thin barrier between fluids, which allows selective transport of certain molecules, based on the pore size of a given membrane.  When differing pressures or concentrations exist on the opposite sides of a membrane, molecules will diffuse from one side to the other, forming concentrated and purified solutions.  Thus, when trying to achieve targeted separation, matching the membrane with the correct pore size for a given molecule, or molecules, is very important.  

Cross flow membrane filtration systems

While pore size is very important, there are many additional factors that go into membrane selection, based on the specific application.  Synder's experienced engineers are ready to evaluate your application. Contact us today to learn more about our membrane filtration systems and spiral membranes  
Complete membrane systemsMembrane filter services

The Right Membrane For Your Application

Remove What You Want, With Incredible Efficiency 
When a membrane is matched to a targeted molecule in a solution, concentrated or fractionated solutions can be created in great quantities with incredible energy efficiency compared to other methods, such as evaporation.  Synder Filtration is committed to finding the right membrane for both conventional and innovative applications within liquid filtration.  With the world's largest selections of Ultrafiltration membrane pore sizes and a Nanofiltration line with unparalleled performance and efficiency, Synder Filtration is constantly taking on industries' most pressing industrial and environmental challenges.   

Cross flow process of polymeric spiral membrane

Spiral Wound Membranes: Greater Efficiency, Less Fouling

Spiral wound membranes typically offer the best combination of flux, rejection, packing density, durability, and membrane cost of all different membrane filters.   Spiral wound membranes feature cross flow membrane filtration, or tangential flow filtration (TFF) which increases permeate passage through the membrane and reduces the immediate fouling (build-up of solids on the membrane surface that hinder separation) that occurs in conventional filtration.  Synder has manufactured both spiral wound membranes and complete membrane systems since 1994, and our technical expertise spans across a wide range of industries and applications.   Contact us for more information on solutions with membrane filters or a complete membrane filtration system.

Diagram of a finished spiral wound membrane element

  • Best operating economics of any membrane configuration
  • Lowest cost per unit area
  • Lowest energy consumption per unit 

Asymmetric Pore Structure

Optimum Filtration, Maximum Permeate Flow
Synder membranes feature an asymmetric pore structure which offers an uncommon combination of a very selective separation process and maximum throughput of permeate in the membrane. 

Electron microscope enhanced image of PES 300 Membrane Top View

Electron microscope enhanced image of PES 300 Membrane Cross Section View