What Is Membrane Microfiltration?
Membrane microfiltration is a technology that is used in wastewater treatment, solvent recovery, gas separation, metal and catalyst recovery and other industrial processes. As the name suggests, this type of filtration employs a porous membrane that removes microscopic contaminants. Related membrane filtration technologies like nanofiltration and ultrafiltration use the same principles to target particles of different sizes.
Systems that rely on gravity to push fluids through membrane microfiltration tend to be too slow for industrial applications. Instead, a low pressure is used to push water through the membrane. While dead-end filters catch contaminants with a filter wall intersecting the direction of flow, an alternative called crossflow filtration is more common with large scale industries. Tubular crossflow systems divide the main flow into smaller cylindrical filters, collecting contaminants as the fluid changes directions through the filters. Because of the increased surface area available for simultaneous filtration, crossflow is considered more efficient for higher volumes of water.
Membrane Microfiltration Prevents Chemical Pollution and Contamination
Wastewater treatment that is not done correctly can lead to the costly and potentially hazardous release of contaminants, possibly out into the environment or onto lawns. Over time, chemicals accidentally released back into the environment have the potential to contaminate water reservoirs and other natural resources. Because it uses a physical rather than chemical means of separation, membrane filtration helps to get rid of not only chemicals but also microorganisms such as bacteria and viruses. Close monitoring and maintenance of a water filtration system is important to ensure that the resulting material is appropriately treated.
Membrane microfiltration is effective for the removal of the intestinal parasite Cryptosporidium, which has an outer shell that helps it survive common methods of chemical disinfection like chlorine. However, the cyst that protects Cryptosporidium is about 25 times larger than the pores of a typical microfilter. Giardia, another well-known intestinal parasite resistant to chlorine, is also efficiently removed with membrane microfiltration. In addition to microscopic pathogens, membrane microfiltration is appropriate for the removal of suspended solids, particulate matter and turbidity.
In its various applications, membrane microfiltration plays an important role in ensuring the quality of treated water. Proper filtration promotes environmental wellness by preventing soil and water pollution.
M.W. Watermark is proud to be an official distributor of the Porex® Tubular Membrane Module™. The M.W. Watermark/Porex® Tubular Membrane Module™ is designed to fit new and existing tubular membrane filtration systems.
Visit our Membrane Microfiltration web page to learn more.
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About M.W. Watermark
M.W. Watermark wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference in the water business, and as a result, make a positive difference to our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. We also specialize in rebuilding used water treatment equipment. Together, we can make a difference.
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