The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2014
Filed:
Jul. 19, 2011
Katsuya Yokokawa, Fuchu, JP;
Takeshi Matsushiro, Yokohama, JP;
Ryo Namba, Fuchu, JP;
Hideaki Yamagata, Urayasu, JP;
Koichi Matsui, Tokyo, JP;
Futoshi Kurokawa, Tachikawa, JP;
Katsuya Yokokawa, Fuchu, JP;
Takeshi Matsushiro, Yokohama, JP;
Ryo Namba, Fuchu, JP;
Hideaki Yamagata, Urayasu, JP;
Koichi Matsui, Tokyo, JP;
Futoshi Kurokawa, Tachikawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a apparatus includes a controller configured to obtain values measured by a first sensor and a second sensor, receive pH target values at the entrance of a first reverse osmosis membrane and at the entrance of a second reverse osmosis membrane, and use a transfer function from the acid injection to pH at the entrance of the first reverse osmosis membrane, a transfer function from the alkaline injection to pH at the entrance of the first reverse osmosis membrane, a transfer function from the acid injection to pH at the entrance of the second reverse osmosis membrane, and a transfer function from the alkaline injection to pH at the entrance of the second reverse osmosis membrane, to control an injection rate of the acid injected from a first injection device and an injection rate of the alkali injected from a second injection device.