| Patent application number | Description | Published |
|---|
| 20080203004 | ULTRAVIOLET IRRADIATION WATER TREATMENT APPARATUS - An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion. | 08-28-2008 |
| 20080210608 | Ultraviolet radiation water treatment system - 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. | 09-04-2008 |
| 20090166276 | WATER TREATMENT SYSTEM - Disclosed is a water treatment system including a raw water tank, a module which includes a filtration membrane, a feed pump, a filtered water tank, a backwash pump which flows filtered water backward from the filtered water tank to the module, a valve and a channel which switch the direction of the water flow between the forward and reverse directions, a controller which suspends the supply of raw water from the raw water tank to the module, switches the valve and channel to the reverse direction, makes the backwash pump to supply filtered water from the filtered water tank to the module thereby backwashing the filtration membrane, and washing drainage treatment line including which treats backwashing drainage generated by backwashing of the filtration membrane, and returns the water to the raw water tank. | 07-02-2009 |
| 20100044285 | SOLID-LIQUID SEPARATOR - An activated carbon adder adds activated carbon to raw water before flocculating sedimentation, to adsorb suspended matter contained in raw water, a liquid cyclone is adapted to separate activated carbon with suspended matter adsorbed thereon, from raw water containing activated carbon, an inflow line is connected with the liquid cyclone so as to cause raw water containing activated carbon before flocculating sedimentation to flow into the liquid cyclone and swirl therein, an activated carbon discharge line discharges activated carbon spun down out of raw water containing activated carbon in the liquid cyclone, from the liquid cyclone, and a pretreated water discharge line discharges raw water having got rid of activated carbon as pretreated water from the liquid cyclone, allowing for a reduced amount of chemicals to be used, with production of a reduced amount of sludge. | 02-25-2010 |
| 20110024646 | ULTRAVIOLET IRRADIATION WATER TREATMENT APPARATUS - An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion. | 02-03-2011 |
| 20110056876 | DESALINATION SYSTEM - Certain embodiments provide a desalination system including a desalination plant, a carbon dioxide contacting plant, a carbonate filtering plant, and an electrolysis plant. The desalination plant works to separate raw water into fresh water and high salinity condensed water. The carbon dioxide contacting plant works to bring carbon dioxide into contact with condensed water obtained at the desalination plant, producing carbonates. The carbonate filtering plant works to filter carbonate containing condensed water produced at the carbon dioxide contacting plant, effecting a carbonate removal from condensed water. The electrolysis plant works for an electrolytic treatment of condensed water after the carbonate removal at the carbonate filtering plant to produce a chemical or chemicals for use in the desalination system. | 03-10-2011 |
| 20110150707 | ULTRAVIOLET IRRADIATION SYSTEM - According to one embodiment, an ultraviolet irradiation system that sterilizes, disinfects, and inactivates raw water such as city water or underground water, includes a plurality of ultraviolet irradiation devices connected in series, and a controller configured to control output and non-output of the ultraviolet irradiation devices. The ultraviolet irradiation device includes a water processing vessel through which the raw water flows, an ultraviolet lamp configured to irradiate the raw water in the water processing vessel with ultraviolet rays, and an ultraviolet sensor configured to measure an amount of ultraviolet rays emitted from the ultraviolet lamp. | 06-23-2011 |
| 20110150708 | ULTRAVIOLET IRRADIATION DEVICE - According to one embodiment, an ultraviolet irradiation device that sterilizes, disinfects, and inactivates raw water such as city water or underground water, includes a water processing vessel, an ultraviolet sensor, and a controller. The water processing vessel includes a water supply port into which the raw water flows, at least a pair of ultraviolet lamps configured to irradiate the raw water that flows into the water processing vessel with ultraviolet rays, and a water discharge port from which the raw water irradiated with the ultraviolet rays is discharged. The ultraviolet sensor is configured to measure an amount of ultraviolet rays irradiated from the ultraviolet lamps. The controller is configured to control turnon and turnoff of the ultraviolet lamps. | 06-23-2011 |
