| 摘要 |
PROBLEM TO BE SOLVED: To provide a filtration unit which prevents a space of the whole of a filtration apparatus containing a water storage tank, or the like, from becoming large when raw water added with, activated carbon, is filtered by a filtration module constituted by a hollow fiber membrane, or the like and permits the suppression of cost by reducing the amount of addition of the activated carbon and effectively utilizing the activated carbon. SOLUTION: The filtration unit 1 is provided with a casing 2 which is immersed and installed in the water storage tank or a storage reservoir, the raw water being introduced thereinto, and has a blind cylindrical shape, an introduction port 2A for introducing the raw water in the water storage tank, or the like into the casing 2, an activated carbon supply means 5 for adding the activated carbon into the introduced raw water, a stirring means 4 of stirring the raw water added with the activated carbon in the casing 2, the filtration module 3 for filtering the raw water, a reversal flow suppressing means 6 for suppressing reversal flow of the raw water in the casing 2 to the introduction port 2A and its discharge into the water storage tank, and a discharging means 7 for discharging the raw water in the casing 2. COPYRIGHT: (C)2005,JPO&NCIPI |
