Abstract:
PROBLEM TO BE SOLVED: To provide a circulation type method and a circulation type apparatus for supplying ozone water which enable supplying ozone water of a constant concentration and a constant pressure, independent of the amount of ozone water used at a use point, without complicated control and allow reuse of unused ozone water.SOLUTION: A circulation type method of supplying ozone water comprises supplying water and ozone gas to an ozone dissolution tank 12 to produce ozone water, supplying the ozone water from the ozone dissolution tank 12 to a circulation tank 21 and from the circulation tank 21 to a use point through an ozone water delivery pipe 22, returning ozone water not consumed at the use point to the circulation tank 21 through an ozone water return pipe 23 and supplying ozone water again from the circulation tank 21 to the use point. The inside pressure of the ozone dissolution tank 12 and the inside pressure of the circulation tank 21 and the inside pressure of the ozone water return pipe 23 are kept constant, and the inside pressure of the circulation tank is controlled to be lower than the inside pressures of the ozone dissolution tank and the ozone water return pipe.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and device for cleaning a substrate by which the generation of water marks is minimized, and the consumption of an org. solvent such as isopropylalcohol is reduced. SOLUTION: This substrate cleaning device consists of a cleaning mechanism 3 for cleaning a substrate to be treated with a cleaning soln., a rinsing mechanism 4 for removing the cleaning soln. depositing on the cleaned substrate and a drying mechanism 5 for removing a rinse depositing on the rinsed substrate. The rinsing mechanism 4 is provided with a rinse tank storing a rinse Q2, the cleaned substrate is dipped in the rinse Q2 to remove the droplets of the cleaning soln. depositing on the substrate, and a mechanism for cooling the rinse Q2 stored in the tank and/or a cooled rinse supply mechanism for supplying the rinse Q2 cooled in a coller 6 to the rinse tank. Further, the rinsed substrate is rotated by a drying mechanism 5 and dried while spraying cooled ultrapure water.
Abstract:
PROBLEM TO BE SOLVED: To provide a wastewater treatment method and a wastewater treatment apparatus which can treat gas dissolved water not used for wet treatment, generated from a wet treatment device carrying out the wet treatment of a washing device etc. in the vicinity of the wet treatment device, and can supply the treated gas dissolved water as raw water to a gas dissolved water generator installed in the vicinity of the wet treatment device. SOLUTION: A tank 3 for recovering ozone water, a cooler 5, and a filter 6 are installed. Unused ozone water 106 not used for washing, generated from the washing device 2 is recovered by the tank 3. After the recovered unused ozone water 106 is sent to the cooler 5 by a pump 4 to be cooled to a prescribed temperature (20-25°C), fine particles in the unused ozone water 106 are removed by the filter, and the unused ozone water is supplied to the dissolving part 12 of an ozone water generator 1. Ozone gas is dissolved to a prescribed concentration by the dissolving part 12 to be supplied to the washing device 2 as ozone water 103. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a gas recovery and recycling method recovering and recycling gas contained in gas-dissolved liquid and a gas recovering and recycling apparatus, by dissolving dissolved gas contained in gas-dissolved liquid discharged from an apparatus using gas-dissolved liquid of a washing device into liquid like pure water able to dissolved gas. SOLUTION: The gas recovering and recycling apparatus is composed to pass liquid through a recovering vessel 12 recovering gas-dissolved liquid discharged from the washing device 10, a gas permeating membrane 20 provided in the recovering vessel 12 and to supply liquid passing through the gas permeating membrane 20 to the washing device 10 via a gas-dissolved water production apparatus 11. The gas-dissolved liquid is stored in the recovering vessel 12, super-pure water from a deaerating means is passed through the gas permeating membrane 20, and the gas in the gas-dissolved liquid is dissolved into ultrapure water via the gas permeating membrane 20. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a device for manufacturing gas-dissolved water which can efficiently manufacture gas-dissolved water 31 wherein concentration of a dissolved gas 3 is at or below saturated concentration in a short time. SOLUTION: The device for manufacturing gas-dissolved water 1 which is constituted so that a gas to be dissolved 3 is dissolved in water to be treated 4 to obtain the gas-dissolved water 5 is provided with a dissolving section 11 for dissolving the gas to be dissolved in the water to be treated, a gas to be dissolved supply passage 12 for guiding the gas to be dissolved to the dissolving section, a first water to be treated supply passage 13 for guiding the water to be treated to the dissolving section, a gas-dissolved water discharging passage 14 for guiding the gas-dissolved water from the dissolving section and a second water to be treated supply passage 15 for guiding the water to be treated without passing through the dissolving section. The second water to be treated supply passage is joined to the gas-dissolved water discharging passage and the water to be treated guided by the second water to be treated supply passage dilutes concentration of the dissolved gas in the gas-dissolved water to a prescribed concentration.
Abstract:
PROBLEM TO BE SOLVED: To provide a concentration measuring device with which the concentration of peroxosulfuric acid in a solution is measured. SOLUTION: The concentration measuring device is provided with a light source lamp 111, an optical cell 106 which is installed on the optical path of light irradiated from the lamp 111 and in which the light is transmitted through the solution to be measured, filled in the inside, a measurement-side light receiving element 113 which detects the intensity of light in a wavelength region near 190 nm, transmitted through the solution to be measured, inside the optical cell 106, an absorbance-measuring part 115 which finds the absorbance of the solution to be measured, on the basis of the intensity of light detected by the measurement-side light-receiving element and a conversion part 131 which finds the concentration of the peroxosulfuric acid in the solution to be measured, on the basis of the absorbance found.
Abstract:
PROBLEM TO BE SOLVED: To provide a concentration measuring device with which the concentration of peroxosulfuric acid and ozone in a solution is measured. SOLUTION: The concentration measuring device is provided with light source lamps 111, 121, an optical cell 106 filled with the solution through which beams of light from the lamps 111, 121 are transmitted, a first measurement-side light-receiving element 113 which measures the intensity of light, in a wavelength region of 190 nm transmitted through the solution inside the optical cell 106, a first absorbance-measuring part 115 which finds absorbance in the wavelength region of 190 nm on the basis of the measured intensity of light, a second measurement-side light-receiving element 123 which measures the intensity of light at a wavelength close to 254 nm transmitted through the cell 106, a second absorbance measuring part 125 which finds an absorbance at the wavelength near 254 nm on the basis of the measured intensity of light and a conversion part 131 which finds the concentration of the ozone and peroxosulfuric acid in the solution to be measured, on the basis of the respective absorbances found in the two absorbance-measuring parts.