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:
Feb. 19, 2019
Filed:
Jul. 29, 2014
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Masayuki Tabata, Tokyo, JP;
Yoshiaki Ito, Tokyo, JP;
Katsunori Matsui, Tokyo, JP;
Kiichi Tokunaga, Tokyo, JP;
Hideo Iwahashi, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD., Yokohama-shi, JP;
Abstract
An object is to provide a pretreatment device of seawater capable of growing and maintaining a biofilm in a good state on each of a plurality of filters connected in series, by supplying nutrients appropriately to the filters. A pretreatment device of seawater is used in removing salt from the seawater to obtain freshwater, and includes: a supply duct () through which the seawater is to be supplied; a plurality of filters () including a particulate filtering material and a biofilm; connecting tubes () which connect the plurality of filters in series; a plurality of bypass tubes () each of which connects corresponding one of the plurality of filters to the supply duct; and a plurality of regulating valves () each of which is disposed in corresponding one of the plurality of bypass tubes to regulate a flow rate.