| 摘要 |
PURPOSE:To allow the constitution of a water cleaning device having a water cleaning function of a building unit scale to a relatively small size by dividing a feed water path after a water receiving tank using city water as a water source to the feed water path for drinking and the feed water path for others and passing only the water to be used for drinking through the water cleaning device. CONSTITUTION:Of the water stored in a water receiving tank 4, only the water to be used for drinking is first filtered by a prefilter 6 in the water cleaning device 5, by which the materials included in the water in a water work pipe and the water receiving tank 4 are removed. Further, the water is passed through a mineral adding tank 7 and is sent to an active carbon adsorbing device 8 where the residual chlorine and org. matter in the water are adsorbed. The water is further filtered by a UF membrane 9 by which general bacteria and pathogenic bacteria are removed. The adequate maintenance of the residual chlorine, etc., is then executed by a chlorine adding device 10 and a specified volume of the water is kept stored therein. The circulating path to feed the water directly therefrom to a feed water piping 2 by a feed water pump 11 and to return the water again to the chlorine adding device 10 through a faucet 3 provided in a building is constituted to suppress the generation of microorganisms and general bacteria in the feed water route. A heat exchanger 12 is provided as well to maintain the water at a low temp., to suppress the generation of the microorganisms and to maintain the taste of the water. |
