POTABLE WATER SUPPLY SYSTEM

To provide a potable water supply system using the antimicrobial activity of silver, capable of suitably maintaining sanitary management for a long time.SOLUTION: A potable water supply system 1 is provided with water supply pipelines 2, 2A, 2B, 2C, 2D for supplying raw water W, and a pretreatment filter 3, a booster pump 4, a flow meter 5, a pair of mineral-adding modules 6, and a water cleaning filter 7 employing silver doped activated carbon, sequentially disposed between the water supply pipeline 2 and an ejection unit 8 attached to the end of the water supply pipeline 2D. The water cleaning filter 7 is constituted of a filter medium made from silver-doped fibrous activated carbon held between a precision filtration membrane or an ultrafiltration membrane and a nonwoven fabric, for example. A mechanism 9 of adding sodium hypochlorite, incorporating a mechanism of adding sodium chloride and comprising a chemical injection pump 10, is connected to the water supply pipeline 2 on the upstream of the pretreatment filter 3.SELECTED DRAWING: Figure 2 【課題】衛生管理を長期間好適に維持することの可能な銀の抗菌作用を利用した飲料水供給システムを提供する。【解決手段】飲料水供給システム１は、原水Ｗを供給する給水管路２，２Ａ，２Ｂ，２Ｃ，２Ｄと、その末端に設けられた吐出部８との間に、前処理フィルタ３と、昇圧ポンプ４と、流量計５と、ミネラル添加モジュール６と、銀着活性炭を使用した浄水フィルタ７とを順次設けてなる。浄水フィルタ７は、例えば、銀イオンが添着された繊維状活性炭からなる濾過材を精密濾過膜又は限外ろ過膜と不織布との間に保持したものである。この給水管路２には前処理フィルタ３の前段に、塩化ナトリウム添加機構を内蔵するとともに薬注ポンプ１０を有する次亜塩素酸ナトリウム添加機構９が接続している。【選択図】図２