Abstract:
The present invention provides an ozonated water generator which can generate highly soluble and highly concentrated ozonated water in an efficient and simple manner. In an ozonated water generator (201) comprising a supply tube (273) for transmitting a treated liquid, a gas/liquid mixing device (205) provided in the path of the supply tube, and an ozone supply structure (203) for supplying ozone to the gas/liquid mixing device. The gas/liquid mixing device is provided with a magnet (243) for creating magnetic force in the interior. Creating magnetic force in both the treated liquid and the ozone makes it possible to generate highly soluble and highly concentrated ozonated water in an efficient and simple manner.
Abstract:
A method of wastewater reutilization by which reusable water can be stably obtained from a wastewater. Ozone is added to a wastewater, such as water resulting from sewage treatment, in such a small amount as to result in a residual ozone concentration as measured before membrane filtration of 0.01-1.0mg/L. Ozone is thus brought into contact with fine solids contained in the wastewater to alter the surface properties of the fine solids so that the solids are easily to coagulate. Thereafter, a coagulant, e.g., PACl, is added from a coagulant addition device (3). The fine solids are coagulated in a coagulation tank (5) or a line mixer and the resultant water is subjected to membrane filtration with an ozone-resistant separation membrane (6) such as ceramic membrane. Thus, reusable water is obtained which has a residual ozone concentration, as measured after filtration through the membrane, less than 0.5mg/L. This method has a low running cost because the ozone consumption is low, and the membrane surface can be prevented from clogging.
Abstract:
PROBLEM TO BE SOLVED: To easily produce ozone-containing water of especially high cleaning efficiency and to manufacture a cleaning apparatus of high cleaning efficiency employing the same. SOLUTION: Water 30 flows into a body pipe 121 of a microbubble generator 12 from an ejection port 122 thereof. The body pipe 121 is disposed in water from which ozone-containing water is produced. A plurality of slits 124 are formed in the lower part of the body pipe 121 as shown in drawing 2. The plurality of slits 124 each communicating with water present inside of the body pipe 121 and water present outside thereof are disposed parallel to each other to form a tilt angle θ relative to the ejection port 122 side from the direction connecting the ejection port 122 and a collision wall 123, toward the ejection port 122 side. A gas feed pipe 125 is disposed on a position closer to the ejection port 122 than to the plurality of slits 124 to communicate with the body pipe 121, and ozone (a gas) is introduced into the body pipe 121 therefrom by virtue of a negative pressure generated by the water flow therein. Namely, an apparatus 10 for producing ozone-containing water is caused to function by water circulated in the microbubble generator 12 by driving a pump 16. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a practical ship balast water treatment arrangement which is easily incorporated in an existing ballast water system pipe in a ship, and can kill aquatic living organisms contained in the ballast water. SOLUTION: The ship balast water treatment arrangement comprises providing a branch pipe 131 branched from a ballast water system pipe for introducing ballast water incorporated in the ship into a balast tank 2 by a first balast pump 4 with a prefilter unit 132, an ozone mixing device 133, a second balast pump 134 discharging at a higher pressure than the first balast pump, a slit plate 135 having a plurality of slit-like openings installed on the secondary side of the second balast pump 134, and a deaeration tank 136, wherein the balast water discharged from the deaeration tank 136 and after deaeration is configured so as to be returned to the balast water system pipe. COPYRIGHT: (C)2008,JPO&INPIT