METHOD FOR TREATING DRAINAGE BY ULTRAVIOLET RAY
PROBLEM TO BE SOLVED: To improve a capacity of oxidation treatment by ultraviolet rays by controlling dissolved oxygen in a reactor in a process in which drainage is irradiated with ultraviolet rays in the reactor. SOLUTION: Wastewater including municipal sewage, industrial drainage, and drainage co...
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| creator | KANEMORI NOBUYUKI MIKI OSAMU |
| description | PROBLEM TO BE SOLVED: To improve a capacity of oxidation treatment by ultraviolet rays by controlling dissolved oxygen in a reactor in a process in which drainage is irradiated with ultraviolet rays in the reactor. SOLUTION: Wastewater including municipal sewage, industrial drainage, and drainage containing reducing sulfur compounds is introduced from a drainage tank 1 into a reactor 3 by a pump 2, a blower 10 is operated, and the water is irradiated with ultraviolet rays by a ultraviolet lamp 5 in the reactor 3 while the water being aerated. In this process, the radiation is done while watching dissolved oxygen (DO) in the reactor 3 as an index. With the use of a DO sensor 8 and a DO controller 9, the number of revolution of the blower is controlled automatically or manually, and aeration is conducted from an air diffusing tube 4. An ORP sensor 6 and an ORP controller 7 for monitoring and controlling oxidation-reduction potential are arranged, and the aeration or the ultraviolet radiation is controlled by ORP of the reactor 3 and/or a treated water tank 12. |
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SOLUTION: Wastewater including municipal sewage, industrial drainage, and drainage containing reducing sulfur compounds is introduced from a drainage tank 1 into a reactor 3 by a pump 2, a blower 10 is operated, and the water is irradiated with ultraviolet rays by a ultraviolet lamp 5 in the reactor 3 while the water being aerated. In this process, the radiation is done while watching dissolved oxygen (DO) in the reactor 3 as an index. With the use of a DO sensor 8 and a DO controller 9, the number of revolution of the blower is controlled automatically or manually, and aeration is conducted from an air diffusing tube 4. 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SOLUTION: Wastewater including municipal sewage, industrial drainage, and drainage containing reducing sulfur compounds is introduced from a drainage tank 1 into a reactor 3 by a pump 2, a blower 10 is operated, and the water is irradiated with ultraviolet rays by a ultraviolet lamp 5 in the reactor 3 while the water being aerated. In this process, the radiation is done while watching dissolved oxygen (DO) in the reactor 3 as an index. With the use of a DO sensor 8 and a DO controller 9, the number of revolution of the blower is controlled automatically or manually, and aeration is conducted from an air diffusing tube 4. An ORP sensor 6 and an ORP controller 7 for monitoring and controlling oxidation-reduction potential are arranged, and the aeration or the ultraviolet radiation is controlled by ORP of the reactor 3 and/or a treated water tank 12.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | METHOD FOR TREATING DRAINAGE BY ULTRAVIOLET RAY |
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