| 摘要 |
A filtration apparatus comprising a filter tank, a support provided at least at a lower interior portion of the filter tank, a filter medium layer composed of fiber lumps accumulated on the support, a filter medium spreading zone provided within the filter tank above the support, air injecting means disposed under the filter medium layer, prefilt inlet means disposed at an upper portion of the tank, and filtrate outlet means disposed at a lower portion of the tank. The apparatus is simple in construction and easy to operate, assures depth-type filtration with high accuracy and is easy to wash for the reuse of the filter medium. |
