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:
Oct. 28, 2008
Filed:
Jun. 12, 2003
Applicants:
Mark Wilf, San Diego, CA (US);
Craig R. Bartels, San Diego, CA (US);
Masahiko Hirose, Shiga, JP;
Inventors:
Assignee:
Hydranautics, Oceanside, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D 61/00 (2006.01); B01D 15/00 (2006.01); B01D 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods of treating a high salinity liquid, such as seawater, containing boron are provided, including adjusting the pH of the liquid to about 8 to about 9.5, optionally adding a scale inhibitor to the liquid, passing the liquid through a reverse osmosis device, and recovering a permeate having a boron concentration less than about 2 ppm. One embodiment includes removing colloidal matter from the liquid using a membrane filtration system, such as ultrafiltration or microfiltration, prior to passing the liquid through the reverse osmosis device, and preferably prior to adjusting the pH of the liquid.