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:
Mar. 13, 2018
Filed:
Mar. 30, 2015
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Masayuki Eda, Tokyo, JP;
Susumu Okino, Tokyo, JP;
Ryuji Yoshiyama, Tokyo, JP;
Hideaki Sakurai, Tokyo, JP;
Nobuyuki Ukai, Tokyo, JP;
Hideo Suzuki, Tokyo, JP;
Hiroshi Nakashoji, Tokyo, JP;
Shigeru Yoshioka, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
Provided are a water treatment system and a water treatment process, which are capable of reproducing water containing salts with high water recovery. In the water treatment system () and the water treatment process of the present invention, after a calcium scale inhibitor and a silica scale inhibitor are supplied to water to be treated containing Ca ions, SOions, carbonate ions, and silica, and the water to be treated is separated in a second demineralizing section () into second concentrated water in which the Ca ions, the SOions, the carbonate ions, and the silica are concentrated and treated water. In a second crystallizing section (), seed crystals of gypsum are supplied to the second concentrated water, whereby gypsum is crystallized and removed from the second concentrated water.