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:
Aug. 05, 2014
Filed:
Aug. 07, 2009
Kazuhisa Takeuchi, Nagasaki, JP;
Yoshiaki Ito, Nagasaki, JP;
Hidemasa Kakigami, Nagasaki, JP;
Hideo Iwahashi, Nagasaki, JP;
Katsunori Matsui, Nagasaki, JP;
Kenji Tanaka, Nagasaki, JP;
Kazuhisa Takeuchi, Nagasaki, JP;
Yoshiaki Ito, Nagasaki, JP;
Hidemasa Kakigami, Nagasaki, JP;
Hideo Iwahashi, Nagasaki, JP;
Katsunori Matsui, Nagasaki, JP;
Kenji Tanaka, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An embodiment of the present invention includes: a recycle line that brings a part of salt-enriched membrane separation concentrated waterback to the rear flow side of a pretreatment apparatus; a water discharge line that discharges the remained concentrated water into a sea area; and a control apparatusthat controls to adjust the ratio between the discharging amount of the discharging membrane separation concentrated water to be discharged into a sea area and the supplying amount of supplying seawater. A pH is set to be equal to or less than 7.3 by adding acid. The saltis obtained from the dryer, and produced water (fresh water)is obtained by combining evaporated watersupplied from the evaporatorwith the permeated watersupplied from the reverse osmosis membrane apparatus