Kurita Water Industries Ltd.

Canon Kabushiki Kaisha

Fuji Xerox Co., Ltd.

Hiroyuki Asada

Akihisa Horiuchi

Yu Tanaka

Hideo Tamamura

Jun Makino

Masaki Higashihara

Hidetoshi Matsuoka

Motoo Kumagai

Takaaki Tokutomi

Etsuro Suzuki

Isao Joko

Hiroyuki Kasuga

Yoshikazu Yatsu

Yoshihiro Etou

Naoko Kudo

A method and an apparatus for treating coal gasification wastewater containing selenium and ions of a metal nobler than titanium eluted from a noble metal catalyst in a catalytic wet oxidation treatment using the noble metal catalyst, the method includes a pretreatment process removing the ions of the metal nobler than titanium and a selenium reduction process contacting the coal gasification wastewater with a mixture of metallic titanium and a simple metal baser than metallic titanium whereby a portion of the simple metal baser than metallic titanium is eluted, and the selenium in the coal gasification wastewater becomes reduced.

Method and apparatus for treating selenium-containing water

A method and an apparatus for treating selenium-containing wastewater, in which wastewater containing hexavalent selenium is subjected to reduction treatment, selenium can be effectively removed at a small amount of metal leached, and, preferably, sludge produced during treatment is white, thereby facilitating the disposal of the sludge. The selenium-containing wastewater is brought into contact with an alloy or a mixture of metallic titanium and a first metal other than metallic titanium to partially leach the first metal, thereby subjecting selenium in the wastewater to reduction treatment.

Method and apparatus for treating selenium-containing wastewater

There is provided an image reader system including an attribute acquisition unit that acquires an attribute of an original that has been detected by an image reader unit that optically reads an image of the original, and an image output unit that outputs the attribute that has been acquired by the image reader unit and image data that are acquired by the reading of the image reader unit with the attribute and the image data being associated with each other.

Image reader system, image reader control method, and computer-readable medium

Waste water containing nitrogen compounds is processed by adding an oxidant to the waste water. The oxidant may be one or more of a chlorine oxidant or hydrogen peroxide. The oxidant breaks down the nitrogen compounds through a breakpoint reaction. The partially processed water then is contacted with a metal peroxide catalyst. The metal peroxide breaks down and removes excess oxidant. The reaction may be carried out at normal temperature and pressure.

Method for treating water which contains nitrogen compounds

A camera includes a fixed first mirror for both reflecting a light flux and transmitting the light flux therethrough, a second mirror for reflecting a part of the light flux transmitted through the first mirror toward a particular device, the second mirror being capable of moving between a non-exposure position and a mirror-retracted position, and a light blocking member movable in interlocked relationship to a movement of the second mirror in such a manner that, when the second mirror is located at the non-exposure position, the light blocking member is located at a light blocking position at which the light blocking member blocks at least a part of the light flux transmitted through the first mirror, and, when the second mirror is retracted to the mirror-retracted position, the light blocking member moves to a retracted position at which the light blocking member is retracted from the light blocking position.

Light blocking apparatus for a camera

Growing community of inventors

Tokyo, Japan

Hiroyuki Asada