PHOTOCATALYST WITH IMPROVED BINDING CAPACITY WITH MEDIA, WATER TREATMENT APPARATUS AND WATER TREATMENT METHOD USING THE PHOTOCATALYST CAPABLE OF SUPPLYING PURIFIED TREATED WATER IN BULK

摘要

PURPOSE: To provide a superior photocatalyst which can be reused by adding boracic acid and sodium ethoxide, thereby improving immobilization force of titanium dioxide and media, a water treatment apparatus for further improving efficiency of the photocatalyst by easily discharging purified treated water, and a water treatment method using the photocatalyst. CONSTITUTION: In a water treatment apparatus comprising a hollow reactor (10) having a certain volume, a raw water inflow pump (22) for flowing raw water in the reactor, and a transfer pump (26) for transferring treated water from the reactor, the water treatment apparatus using immobilized photocatalyst comprises a cylindrical rotary screen (12) vertically arranged in a central part inside the reactor in such a way that the rotary screen is rotated; vanes (18) attached to upper and lower end parts of the rotary screen; a variable motor (20) connected to a hollow rotary shaft by pulley and belt to provide the rotary screen with rotary force, wherein the hollow rotary shaft is integrally attached to an upper part of the rotary screen; a plurality of ultraviolet lamps (14) vertically arranged between the inner wall of the reactor and the rotary screen; and a pair of air lift pumps (16) communicatingly connected to the reactor, wherein the treated water is transferred by the transfer pump as the treated water is passing through the hollow rotary shaft in an upper part of the rotary screen from the rotary screen.