| 摘要 |
PURPOSE:To prevent the formation of algae in a landscape basin by mounting an iron column provided on the outlet side of an ozone reaction tank in series and catching phosphorus in refluxed water as insoluble iron phosphate by iron hydroxide formed by bringing the residual ion in refluxed water into contact with metal iron. CONSTITUTION:Water 2 to be treated is introduced into the upper part of an ozone reaction tank 4 from a landscape basin 1 by a water pump 3. Air raised in its pressure by a blower 5 is sent to an ozone generator 6 and dehumidified/dried by a dehumidifier while the dried air enters a discharge tube to generate ozone to be taken out as ozonized air 7 and air bubbles are introduced into the ozone reaction tank 4 through a diffuser 8. In this tank 4, the ozone gas diffused from the lower part of the tank 4 comes into contact with the water to be treated flowing in the tank 4 from above to perform the killing of algae, discoloration and deodorizing. After reaction, the water to be treated is sent to an iron column 10 as ozone treated water 9 and, in the iron column, a metal iron material 11, dissolved ozone and ferric hydroxide catch phosphorus in water as iron phosphate to lower the concn. of phosphorus and treated water 12 is returned to the original landscape basin 1. |
