Patent ID: 6303087
Filing Date: 2001-10-16
Classification: C02F

Abstract:
A UV-irradiation device for treating wastewater comprising:a plurality of lamp units each having a radiation source and an encasing tube surrounding the radiation source, the encasing tube being of a substantially cylindrical design, and terminating at opposite ends;a holding means for holding said plurality of lamp units;a source of cleaning solution;a plurality of liquid retaining means for holding said cleaning solution, each of said encasing tubes being assigned at least one of said liquid retaining means, wherein each of said liquid retaining means is a ring made of semi-rigid porous material whose internal surface is in contact with the periphery of the respective encasing tube;a detachable holding and penetrating means for holding and puncturing said liquid retaining means, said penetrating means being in fluid communication with said source of cleaning solution to deliver said cleaning solution to said liquid retaining means; and,a drive means to displace each of said liquid retaining means along its respective encasing tube from one end of the encasing tube to the other end of the encasing tube.