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. 07, 2009
Filed:
May. 01, 2008
Patrick V. Brady, Albuquerque, NM (US);
Brian P. Dwyer, Albuquerque, NM (US);
James L. Krumhansl, Albuquerque, NM (US);
Joseph D. Chwirka, Tijeras, NM (US);
Patrick V. Brady, Albuquerque, NM (US);
Brian P. Dwyer, Albuquerque, NM (US);
James L. Krumhansl, Albuquerque, NM (US);
Joseph D. Chwirka, Tijeras, NM (US);
Sandia Corporation, Albuquerque, NM (US);
Abstract
A low-cost, water treatment system and method for reducing arsenic contamination in small community water storage tanks. Arsenic is removed by using a submersible pump, sitting at the bottom of the tank, which continuously recirculates (at a low flow rate) arsenic-contaminated water through an attached and enclosed filter bed containing arsenic-sorbing media. The pump and treatment column can be either placed inside the tank (In-Tank) by manually-lowering through an access hole, or attached to the outside of the tank (Out-of-Tank), for easy replacement of the sorption media.