Industrial Ultrafiltration is a mechanical process driven by low pressure for removing contaminants from water in many applications for the removal of suspended solids, colloids, and materials of high molecular weight from water.
In ultrafiltration, the flow of water is directed through a membrane in a cross flow, and a portion of input water flows across the surface of the membrane at a precise rate of flow and pressure, (flux). This allows most particulate contaminants to be removed, but also allows the membrane surface to stay clean, eliminating the fouling that can render other systems ineffective until manual cleaning occurs.
UF is particularly effective for colloid removal and as pretreatment to Reverse Osmosis used in desalination.
Applications for Industrial Ultrafiltration
The contaminant-free water resulting from the ultra-filtration process can be used in many applications. These include private water supplies, engineering activities, food processing and brewing. It can also be used as a pre-treatment for water that will go through a reverse osmosis system. Water that has been through the ultrafiltration process can also be used for drinkable water in hotels, recreational centers and the like.
Benefits and Disadvantages
Industrial Ultrafiltration systems tend to be long-lasting, even when enduring frequent washing of the membranes. As well, the life of an ultrafiltration system can be extended that much further when regular high-speed flushes are completed. These systems are also very efficient and leave a small carbon footprint.
The primary advantages of low-pressure Ultrafiltration membrane processes compared with conventional clarification and disinfection (post chlorination) processes are: