| 摘要 |
<p>The present invention relates to a method and filter device based on adapting the filtration to take place on essentially vertical filter surfaces. The filter elements are advantageously made of mineral fiber. The footprint of a filter plant will be essentially reduced thus permitting the placement of the filter in a closed space. This approach is capable of avoiding the degrading effects of naturally occuring impurities and sunlight on the raw water quality. Moreover, the maintenance of the filter becomes easier and its intervals between maintenance will be extended.</p> |
