APPARATUS FOR PURIFYING BATH WATER

摘要

PROBLEM TO BE SOLVED: To solve such a problem that when a method for removing a suspended particle by using a membrane is adopted, the backwashing efficiency of the membrane is bad. SOLUTION: This apparatus for purifying bath water is provided with: a circulation pump 4 for circulating bath water 2; a filtering means 6 provided with a filter 5 for removing suspended matter in the bath water and; a flow passage switching valve for switching the outflow/inflow directions of the bath water to be sent to the filtering means when the bath water is purifyed or when the filter is washed. The surface of the filter is made water-repellent by using an emulsion composition so that the attachment of dirt (suspended matter) to the filter can be prevented, the dirt release effect can be improved and the filter backwashing efficiency can be improved. The surface of the filter is made water-repellent by using the emulsion composition so that a high-durability water-repellent coating film can be formed on the surface of the filter. COPYRIGHT: (C)2005,JPO&NCIPI