Ultraviolet radiation water treatment system
AssigneeKabushiki Kaisha Toshiba
InventorsNorimitus Abe, Takeshi Ide, Takeshi Matsushiro, Hiroyuki Suzuki, Seiichi Murayama
Life of this patent
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Abstract
A water treatment system that performs a water purifying treatment by use of ultraviolet radiation, comprises a front stage ultraviolet radiation device for radiating ultraviolet light in a front stage process in a water purifying treatment process, a rear stage ultraviolet radiation device for radiating ultraviolet light in a rear stage process, and a controller for controlling these ultraviolet radiation devices.
Claims74
A water treatment system for performing a water purifying treatment by use of ultraviolet radiation, comprising:
- a first ultraviolet radiation device which radiates ultraviolet in a raw water coagulation/sedimentation treatment process as a front stage process of a water purifying treatment process;
- a second ultraviolet radiation device to radiate ultraviolet to treatment water at the front stage process in a rear stage process of the water purifying treatment process;
- and
- a controller which controls the first and second ultraviolet radiation devices.
A water treatment system for causing input raw water to flow sequentially through a plurality of basins arranged in series along a flow route of the raw water, and performing a predetermined water treatment to the basins while the raw water is caused to flow through the basins, thereby supplying the input raw water as drinkable purified water, the system comprising:
- a device which, with respect to the treatment water in a selected basin among the respective basins arranged in series in the flow route of the raw water, performs injection of sodium hypochlorite and radiation of ultraviolet of the amounts according to a turbidity of the treatment water.
A water treatment system for causing input raw water to flow sequentially through a plurality of basins arranged in series along a flow route of the raw water, and performing a predetermined water treatment to the basins while the raw water is caused to flow through the basins, thereby supplying the input raw water as drinkable purified water, the system comprising:
- a front stage injection and radiation control unit which adjusts an injection amount of sodium hypochlorite and a radiation amount of ultraviolet with respect to treatment water in the basin positioned at the front stage among the respective basins arranged in series in the flow route of the raw water;
- a middle stage injection and radiation control unit which adjusts an injection amount of sodium hypochlorite and a radiation amount of ultraviolet with respect to treatment water in the basin positioned at the middle stage among the respective basins arranged in series in the flow route of the raw water;
- and
- a rear stage injection and radiation control unit which adjusts an injection amount of sodium hypochlorite and a radiation amount of ultraviolet with respect to treatment water in the basin positioned at the rear stage among the respective basins arranged in series in the flow route of the raw water.
A water treatment system for causing input raw water to flow sequentially through a plurality of basins arranged in series along a flow route of the raw water, and performing a predetermined water treatment to the basins while the raw water is caused to flow through the basins, thereby supplying the input raw water as drinkable purified water, the system comprising:
- turbidity measuring means for measuring a raw water turbidity of the input raw water;
- a front stage injection and radiation control unit which controls an injection amount of sodium hypochlorite and a radiation amount of ultraviolet with respect to treatment water in the basin positioned at the front stage among the respective basins arranged in series in the flow route of the raw water;
- a middle stage injection and radiation control unit which controls an injection amount of sodium hypochlorite and a radiation amount of ultraviolet with respect to treatment water in the basin positioned at the middle stage among the respective basins arranged in series in the flow route of the raw water;
- a rear stage injection and radiation control unit which controls an injection amount of sodium hypochlorite and a radiation amount of ultraviolet with respect to treatment water in the basin positioned at the rear stage among the respective basins arranged in series in the flow route of the raw water;
- high turbidity pattern control means for, when the raw water turbidity measured by the turbidity measuring unit is a high turbidity over a predetermined upper reference value, instructing the front stage injection and radiation control unit to only inject sodium hypochlorite, instructing the middle stage injection and radiation control unit to only inject sodium hypochlorite, and instructing the rear stage injection and radiation control unit to inject sodium hypochlorite and radiate ultraviolet;
- middle turbidity pattern control means for, when the raw water turbidity measured by the turbidity measuring unit is a middle turbidity below the predetermined upper reference value and over a predetermined lower reference value, instructing the front stage injection and radiation control unit to inject sodium hypochlorite and radiate ultraviolet, instructing the middle stage injection and radiation control unit to only radiate ultraviolet, and instructing the rear stage injection and radiation control unit to only inject sodium hypochlorite;
- and
- low turbidity pattern control means for, when the raw water turbidity measured by the turbidity measuring unit is a low turbidity below the predetermined lower reference value, instructing the front stage injection and radiation control unit to only inject sodium hypochlorite, instructing the middle stage injection and radiation control unit to only radiate ultraviolet, and instructing the rear stage injection and radiation control unit to inject sodium hypochlorite and radiate ultraviolet.
Dependencies are inferred from the claim text.