Search International and National Patent Collections

1. (WO2015125357) SEAWATER PERMEATION INTAKE APPARATUS

Pub. No.:    WO/2015/125357    International Application No.:    PCT/JP2014/080215
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Sat Nov 15 00:59:59 CET 2014
IPC: C02F 3/06
B01D 24/02
C02F 3/00
E03B 3/04
Applicants: HITACHI ZOSEN CORPORATION
日立造船株式会社
Inventors: INUI, Masaki
乾 真規
NIIZATO, Hideyuki
新里 英幸
INOUE, Takayuki
井上 隆之
Title: SEAWATER PERMEATION INTAKE APPARATUS
Abstract:
[Problem] To promote the generation of a biofilm required for biofiltration, or the recovery of a biofilm that has sustained damage during operation. [Solution] Provided is a seawater permeation intake apparatus (1) with which seawater that has permeated through a seabed filtration sand layer (2) and support gravel layer (3) is taken in by an intake pipe (4) that is buried in the support gravel layer (3). The apparatus is provided with a liquid injecting means (5) for injecting a liquid containing microbes or a microbe growth-promoting agent into the filtration sand layer (2), in order to promote the generation of a biofilm required for biofiltration in the filtration sand layer (2), or the recovery of a biofilm that has sustained damage. [Effect] Due to this configuration, upon initial introduction, the time needed until the function of biofiltration is exerted is dramatically curtailed as compared to the prior art. If an external factor such as a rapid change in water quality causes damage to the biofilm during operation of the filtration sand layer, early recovery of the biofilm is still possible.