LIQUID PURIFICATION APPARATUS AND METHOD

摘要

A liquid purification apparatus (100), comprises a reservoir (101) for liquid (102) and a primary irradiation device (106, 301); characterized in that it has a directional valve (107, 500) which is mobile between a recirculating position and a discharging position where the liquid (102) flows through circulation tubes (105, 305, 501; 115, 306, 502) having at least one portion substantially transparent to ultraviolet light disposed within said primary irradiation device (106, 301); wherein when said directional valve (107, 500) is in the recirculating position, said reservoir (101), said circulation tubes (105, 305, 501), said directional valve (107, 500,115, 306, 502) form a closed loop. This invention eliminates any dead-space or dead- corners from the apparatus and also prevents the re-contamination of the whole system. (Figure 1)