| 摘要 |
PURPOSE: A lower water collecting assembly of a pressurized membrane module-based water purifying device is provided to improve a purifying efficiency of water based on a membrane area and to save a cost required to operate the device by lowering an operating pressure of the device. CONSTITUTION: A lower water collecting assembly (200) is assembled on the lower side of a high-flux pressurized membrane module-based water purifying device (100). The device consists of a hollow fiber membrane filtering unit and an upper header unit (130). The upper header unit includes a first outlet (131) and a second outlet (133). Concentrated water is supplied through the first outlet, and produced water is supplied through the second outlet. The lower water collecting assembly consists of a residual water and air supplying module and a lower heater unit (250). The module supplies residual water from the hollow fiber membrane filtering unit to the outside. The module includes a supplying hole and is in connection with a hollow fiber membrane unit. The supplying hole supplies air for removing foreign materials. The lower header unit includes an inlet (251), a third outlet (253), and a fourth outlet (254). Raw water is pressurized and supplied through the inlet. The third outlet is in connection with the supplying hole. Produced water from the hollow fiber membrane filtering unit is supplied through the fourth outlet. |
