Ultrafiltration (UF) is a membrane process suitable for removing or reducing solids, microorganisms, turbidity and suspended solids. Pathogens can settle in such turbidity substances and thus escape most disinfection measures. After their removal, a subsequent disinfection, preferably with a UV system, can be carried out. Ultrafiltration thus makes an important contribution to the production and protection of drinking water.
JUDO PURE@ENTRY ultrafiltration plants combine this proven process with numerous other advantages. The plants are of modular design and available in different sizes. They can thus be easily adapted to different requirements in terms of performance and water quality. The system can be used to treat well water, surface water, brackish water and even sea water. It can also be used for pre-treatment for other processes such as reverse osmosis: PURE@ENTRY makes the operation of these plants more economical and safer.
JUDO ultrafiltration plants are designed for fully automatic operation. The control system regulates the various operating cycles such as filtration and rinsing.
For reasons of water saving, the filtration itself is carried out in so-called dead-end operation. Here, the water is pressed at about 3 bar through hollow fibre bundles closed at the end. Pure water passes through the membrane, germs, turbidity and dirt particles remain behind. In order to remove the dirt, cleaning/rinsing must be carried out at regular intervals. The running time between two rinses is between 30 and 120 minutes depending on the degree of contamination of the water. If the running time is shorter, a further filtration stage must be installed upstream, for example a multi-layer filter. Flushing is automatically triggered by time interval and/or differential pressure. It lasts about 40 to 60 seconds; the water supply can be maintained by means of a buffer tank.