RAW WATER SENSOR-CONTROLLED RO WATER PURIFIER

摘要

PPROBLEM TO BE SOLVED: To provide a raw water sensor-controlled RO water purifier which generates purified water at a low cost with high efficiency by automatically monitoring the raw water concentration in a raw water tank with a raw water sensor in a purification system for performing purification while returning concentrated water, discharged from an RO membrane, to the raw water tank. PSOLUTION: The raw water of the raw water tank is purified by an RO membrane device 9 and activated carbon tanks 7, 8, 10, and the purified water is sequentially transferred to a purified water tank 26 through a purified water supply pipe 24. The raw water concentration is measured by the raw water sensor 5 with respect to the raw water 2 flowing through a raw water supply pipe 3 from the raw water tank 1, and the measured value Ct is read continuously by the raw water sensor 5. The reference raw water concentration C0 is calculated from the earliest raw water concentration C1, and then the raw water concentration Ct is compared to the reference raw water concentration C0. When it is found from the comparison that the raw water concentration Ct is larger than the reference raw water concentration C0, the drive of a water pump 4 is stopped by a driving signal S4, and alarm treatment is performed which urges the exchange of the raw water 2 and the RO membrane device 9. PCOPYRIGHT: (C)2011,JPO&INPIT