Kitz Corporation

Toyo Valve Co., Ltd.

Takako Sakurai

Katsuhisa Yata

Toshiharu Tanaka

Satoshi Ito

Shinta Kunitomo

Toshihiro Katakura

Masatoshi Fuji

A wash water processing apparatus (), a sterilization and water-purification apparatus, and a cleaning method include a control apparatus () formed of a storage part () having stored therein an arithmetic expression capable of finding a discharge amount of processed water and a supply amount of pure water in accordance with an ozone concentration and a TOC concentration of processed water and a control part () which controls the ozone supply part and TOC adjustment device (). Supply of pure water to processed water of processed water, or discharge of processed water and supply of pure water is performed by the TOC concentration adjustment device in accordance with a result found from the arithmetic expression to reduce the TOC concentration of wash water for use in a washing processing part () to a value equal to or smaller than a predetermined value.

Wash water processing apparatus and sterilization and water-purification apparatus, and wash water processing method

A wash water processing apparatus of reusing wash water includes: a washing processing part washing a subject to be washed; a wash water accommodation part into which processed water used in a washing process in the washing processing part is once accommodated; a sterilization and purification unit causing, while acting with an ozone supply function, ozone water to be contained in the processed water flowing through the wash water accommodation part in a circular manner; and a filtration mechanism part configured to include a filter and an ion-exchange resin and sequentially filtrating the processed water to be reused as wash water in the washing processing part, as the ozone water is supplied as the processed water is mixed to dilute an ozone concentration in the wash water accommodation part. In a state where the ozone concentration is adjusted, the processed water is passed through the filter and the ion-exchange resin.

Wash water processing apparatus and sterilization and purification unit, and wash water processing method of semiconductor element or liquid-crystal glasses

A wash water processing method and a wash water processing apparatus in a simple structure capable of effectively decomposing organic matters and killing bacteria contained in wash water, extending the life of a filter of a filtration apparatus and an ion-exchange resin and, furthermore, extending a bacteria-killing/washing interval of a washing processing part. In the wash water processing apparatus () and the washing method, a wash water accommodation part () into which processed water processed in a washing processing part () flows and a filtration mechanism part () are connected and the wash water accommodation part has connected in a circulatable manner thereto an inflow flow path and an outflow flow path of a sterilization and purification unit which organically couples respective functions of an ozone supply part which supplies ozone, an ultraviolet irradiation part which irradiates with ultraviolet rays, and a photocatalysis part which causes a photocatalyst to act.

Wash water processing method

A circulation type aquaculture method and a circulation type aquaculture apparatus which treat and remove ammonia harmful to fishes/shellfishes. The method includes a first step of finding an ammonia decomposition rate upon preliminarily treating cultivation water by using ozone or hypochloric acid so as to set a target remaining amount of ammonia after the decomposing treatment, a second step of finding the amount of ammonia in cultivation water so as to calculate a treating period of time required for reducing the amount of ammonia to the target remaining amount of ammonia based upon the ammonia decomposition rate of the first step, a third step of treating the cultivation water using ozone or hypochloric acid during the treating period of time calculated in the second step so as to treat and decompose ammonia in the cultivation water and a fourth step of returning the cultivation water to the aquaculture tank.

Growing community of inventors

Chino, Japan

Takako Sakurai