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:
Nov. 07, 2000
Filed:
Oct. 20, 1998
Keiji Uemura, Tokyo, JP;
Kurita Water Industries Ltd., Tokyo, JP;
Abstract
A membrane separation device includes a washing apparatus and a membrane module. The washing apparatus is formed of a vessel for accommodating the membrane module therein, a first tank and a second tank for accommodating washing liquid for washing the membrane module in the vessel and connected to the vessel, a compressed gas feeding device connected to the first and second tanks for selectively feeding compressed gas into the first and second tanks to flow out the liquid therefrom, and conduits connected among the vessel, first and second tanks, and compressed gas feeding device. A conduit selecting device is attached to the conduits for feeding the washing liquid in one of first and second paths. In the first path, the compressed gas in the compressed gas feeding device is fed into the first tank, and the liquid in the first tank is fed into the vessel through the liquid inlet to wash the membrane module accommodated therein and is led to the second tank. In the second path, the compressed gas in the compressed gas feeding device is fed into the second tank, and the liquid in the second tank is fed into the vessel through the liquid inlet to wash the membrane module and is led to the first tank.