Abstract:
Provided is a purifying apparatus, which includes ultraviolet lamps and an ozone lamp having different wavelengths from one another and disposed in tubes to remove bacteria, VOC, bad odors in water or air, and these tubes are arranged in a serial or parallel way. Folds are formed at inner ends of the spiral photocatalytic sheets which are in contact with the lamps and the respective lamps are inserted into to increase the contact area with air or water and the one with the lamp, thereby preventing the lamp from being damaged. The purifying apparatus includes: an outer case having an inlet and an outlet; a spiral photocatalytic sheet to be inserted into the outer case; a UV lamp to be inserted into the spiral photocatalytic sheet, wherein folds are disposed at an inner side of the spiral photocatalytic sheet where a space for inserting the UV lamp is formed.
Abstract:
PROBLEM TO BE SOLVED: To provide a ballast water treating system having a back pressure forming part for performing efficient backwash work by checking and forming a back pressure in a filtration part when performing the backwash work of a filtration part filter, and to provide a method therefor.SOLUTION: This system includes: the filtration part including a body having an inflow part and an outflow part from which ballast water flows in and out, the filter positioned inside the body and filtering the ballast water flowing in through the inflow part, and an automatic cleaning part for removing foreign matter adhering onto the filter; and the back pressure forming part 2 for performing smooth backwash by checking and forming the back pressure inside the filtration part when performing backwash of the automatic cleaning part; wherein the automatic cleaning part removes foreign matter on the filter by using a difference between a pressure inside the body and a pressure of the outside, thereby enabling a smooth backwash work of the automatic cleaning part.