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. 30, 2002
Filed:
Nov. 22, 1999
Masahiro Kurokawa, Osaka, JP;
Shiro Inoue, Osaka, JP;
Shoichi Momose, Osaka, JP;
Kazunori Koba, Osaka, JP;
Hitachi Zosen Corporation, Osaka, JP;
Abstract
This invention provides a compact effluent water reclamation apparatus which is minimized in the kinds and amounts of chemicals to be used for the recovery of water to thereby reduce the amount of waste and eliminate equipment which necessitates a large area for installation. The effluent water reclamation apparatus comprises a reverse osmosis device and is adapted to treat acid-alkali effluent water containing organic matter but no fluorine, by concentrating the acid-alkali effluent water containing organic matter by reverse osmosis, evaporating the resulting concentrated water to dryness and collecting the water permeating through a reverse osmosis membrane. The apparatus is characterized in that the apparatus comprises as arranged upstream from the reverse osmosis device a neutralizing device for neutralizing the effluent water to prevent a scale component from separating out from the effluent water in the process of reverse osmosis, and a biological treatment tank for biologically treating the neutralized effluent water.