Title:
OSMOSIS FILTERING METHOD FOR SEA WATER AND OSMOSIS WATER INTAKE UNIT
Document Type and Number:
WIPO Patent Application WO/2013/046930
Kind Code:
A1
Abstract:
[Problem] To cleanse a suspended matter or the like captured on the surface of a sand filtering layer as well as on an intermediate layer. [Solution] Provided is an osmosis filtering method for sea water having an osmosis water intake unit (11) that is formed beforehand and in which a water intake pipe (12) is embedded in a gravel layer (13) that is for forming a lower layer of a sand filtering layer, a reverse cleaning pipe (14) is embedded in a sand layer (15) that is for forming an intermediate layer and a surface layer of the sand filtering layer, and a water suction pipe (16) is installed above the sand layer (15). A sand filtering layer is formed by combining a required number of osmosis water intake units (11) at an installation location on the sea bed. Sea water is taken in when sea water that naturally permeates through the sand filtering layer is introduced into the water intake pipe (12). The sea water permeation speed is no faster than 400m/day. A suspended matter or the like held in the intermediate layer of the sand filtering layer is agitated by injecting water or air from the reverse cleaning pipe (14), the suspended matter is blown onto the surface layer of the sand filtering layer and recovered by suctioning the agitated water from the water suction pipe (16). [Effect] The seawater permeation speed can be maintained at the highest speed possible, i.e., no faster than 400m/day.
More Like This:
Inventors:
NIIZATO HIDEYUKI (JP)
INOUE TAKAYUKI (JP)
ARAI HIROAKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
INOUE TAKAYUKI (JP)
ARAI HIROAKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
Application Number:
PCT/JP2012/070002
Publication Date:
April 04, 2013
Filing Date:
August 06, 2012
Export Citation:
Assignee:
HITACHI SHIPBUILDING ENG CO (JP)
NAGAOKA CORP (JP)
NIIZATO HIDEYUKI (JP)
INOUE TAKAYUKI (JP)
ARAI HIROAKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
NAGAOKA CORP (JP)
NIIZATO HIDEYUKI (JP)
INOUE TAKAYUKI (JP)
ARAI HIROAKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
International Classes:
B01D24/02; B01D24/46; B01D24/48; B01D29/60; B01D29/62; B01D29/66; E03B3/04
Domestic Patent References:
| WO2010125662A1 | 2010-11-04 |
Foreign References:
| JP2004066217A | 2004-03-04 | |||
| JPH0615110A | 1994-01-25 |
Attorney, Agent or Firm:
MIZOGAMI, Tetsuya et al. (JP)
Tetsuya Mizogami (JP)
Tetsuya Mizogami (JP)
Download PDF:
Claims: