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:
Feb. 12, 2019
Filed:
Feb. 10, 2014
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Kiichi Tokunaga, Tokyo, JP;
Takeshi Yasunaga, Tokyo, JP;
Yoshiaki Ito, Tokyo, JP;
Yuta Hashimoto, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD., Yokohama-shi, JP;
Abstract
A reverse osmosis membrane apparatus has a plurality of high pressure vesselsandin parallel with each other with respect to introducing passageof clarified seawater obtained by subjecting raw seawater to sterilization and removal of relatively large foreign substances. The high pressure vesselsandhave first-stage reverse osmosis membrane elementsand, respectively. Concentrated seawater subjected to membrane separation in the high pressure vesselsandflows into a high pressure vessel. In the high pressure vessel, a plurality of reverse osmosis membrane elementsare arranged in series. When a detected value obtained by a differential pressure meterorprovided for the high pressure vesselorexceeds a threshold value, introduction of the clarified seawater is stopped, and the reverse osmosis membrane element is washed or replaced.