| 摘要 |
<p>A filtration device 50 which has a large number of filters 52 each comprising a filter element and a casing, and has such a structure that filter strings 82 are constructed in such a manner that a plurality of filters 52 are connected in a row by header tubes 58 such as unfiltered liquid feeding header tube 60, filtrate recovery header tube 62 and unfiltered liquid recovery header tube 64, and at least two rows of filter strings 82 are further connected in parallel by a filtrate recovery collecting tube 84, and furthermore the filtrate recovery collecting tube 84 is placed at a higher position than the filtrate recovery header tubes 62.</p> |
