Lenticular filter

These lenticular filters provide satisfactory clarification in a single operation, even after several days in operation, provided that the wines have already been partially clarified, e.g. barrel-aged red wines. However, sterile filtration of sweet wines is by no means a guaranteed success (Serrano and Ribereau-Gayon, 1991). 

Fig. 11.13. Lenticular filter. Casings fitted with (a) one module and (b) four modules...

The simplest type of dead-end membrane filter shown in Figure 1.49, which is also known as a lenticular filter, resembles a small scale multi-element... 

Filters are available in several constructions, effective filtration areas, and configurations. Depending on the individual process, the filter construction and setup will be chosen to fit its purpose best. Most commonly used for RO filters are tubular devices, so-called spiral wound modules due to the spiral configuration of the membrane within the support construction of such device. UF systems can be found as a spiral wound module, a hollow fiber, or a cassette device. The choice of the individual construction depends on the requirements and purposes towards the UF device. Similar to the different membrane materials, UF device construction has to be evaluated in the specific applications to reach an optimal functioning of the unit. Microfilters and depth filters can be lenticular modules or sheets but are mainly cylindrical filter elements of various sizes and filtration areas, from very small scale of 300 cm to large scale devices of 36 m. A 10-inch high cylindrical filter element can be seen in Fig. 6. 

Filtering wine with sheet or lenticular module filters, as well as standard membrane systems, is governed by this law under clearly defined operating conditions. The volume that can be... 

Flat-sheet Alters may be mounted on tray filters or built into closed Alters that prevent leaks. These are known as lenticular modules . 

Wine sheet or lenticular module filtered before bottling 1 0.5 0.4-1 0.5 0.4-1 20-50 15... 

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