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. 20, 2012
Filed:
Dec. 19, 2008
Norimitsu Abe, Kawasaki, JP;
Seiichi Murayama, Fuchu, JP;
Takeshi Ide, Kokubunji, JP;
Akira Morikawa, Kitakatsushika-gun, JP;
Shojiro Tamaki, Nishitokyo, JP;
Norimitsu Abe, Kawasaki, JP;
Seiichi Murayama, Fuchu, JP;
Takeshi Ide, Kokubunji, JP;
Akira Morikawa, Kitakatsushika-gun, JP;
Shojiro Tamaki, Nishitokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
Disclosed is a water treatment system including a raw water tank, a module which includes a filtration membrane, a feed pump, a filtered water tank, a backwash pump which flows filtered water backward from the filtered water tank to the module, a valve and a channel which switch the direction of the water flow between the forward and reverse directions, a controller which suspends the supply of raw water from the raw water tank to the module, switches the valve and channel to the reverse direction, makes the backwash pump to supply filtered water from the filtered water tank to the module thereby backwashing the filtration membrane, and washing drainage treatment line including which treats backwashing drainage generated by backwashing of the filtration membrane, and returns the water to the raw water tank.