WATER QUALITY PURIFICATION DEVICE

摘要

PURPOSE:To provide a water quality purification device by which ozone can be sufficiently absorbed and the treating efficiency can be enhanced. CONSTITUTION:Ozone from an ozone generator 5 is injected into water 1 to treated stored in a pressure treating tank 2 in a pressurized state to perform ozone treatment. Direct current voltage is impressed on a positive electrode 10a and a negative electrode 10b arranged in the pressure treating tank 2 from a direct current power source 11 to electrolyze the water 1. The water 1 is added with a coagulant 6 before it is fed to a floating tank 14. The water 1 incorporated with the coagulant is pressure-reduced via a pressure reducing valve 20 to be discharged to a lower part of the floating tank 14. The gas absorbed in the water by reducing pressure is raised as air bubbles in the floating tank 14, then scum 22 is deposited, floated and separated. The scum 22 which was floated and separated is recovered by scraping the scum by a scraper 23.