Kabushiki Kaisha Toshiba

Shojiro Tamaki

Seiichi Murayama

Masao Kaneko

Norimitsu Abe

Kie Kubo

Futoshi Kurokawa

Kenji Taguchi

Kotaro Iyasu

Nobuyoshi Kaiga

Akira Morikawa

Akira Hiramoto

Takumi Hayashi

Takahiro Soma

Masumi Nakadate

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.

Water treatment system

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.

Ultraviolet irradiation water treatment apparatus

A water treatment control system for minimizing trihalomethane formation includes chlorine injection equipment having a plurality of chlorine injectors (), a fluorescence analyzerprovided on the upstream of the chlorine injectors, and a water flowmeterAn chlorine injection rate necessary to reduce a trihalomethane formation potential is calculated by a chlorine injection rate calculating apparatusbased on a measured value from the fluorescence analyzerAn chlorine injection amount from the chlorine injectors is controlled by chlorine injection amount control apparatusesbased on the chlorine injection rate and a measured value from the flowing water flowmeter

Water treatment control system for minimizing trihalomethane formation

A water treatment control system using a fluorescence analyzer includes an activated carbon injection equipment having an activated carbon injector , a fluorescence analyzer provided on the upstream of the activated carbon injector , and a flowing water flowmeter An activated carbon injection rate necessary to reduce a trihalomethane formation potential is calculated by an activated carbon injection rate calculating apparatus based on a measured value from the fluorescence analyzer An activated carbon injection amount from the activated carbon injector is controlled by an activated carbon injection amount control apparatus based on the activated carbon injection rate and a measured value from the flowing water flowmeter

Water treatment control system using fluorescence analyzer

Growing community of inventors

Nishitokyo, Japan

Shojiro Tamaki