Title:
土砂洗浄装置及び土砂洗浄方法
Document Type and Number:
Japanese Patent JP4382397
Kind Code:
B2
Abstract:
A method and apparatus for cleaning a contaminated soil using an ejector (8) for washing a contaminated soil and sand, a soil and sand separating vessel (3, 4) receiving the washed soil and sand, and a scum separating vessel (19) receiving a stored water in the soil and sand separating vessel (3, 4), which comprises a treatment of washing the contaminated soil and sand with an ejector (8) before sending the soil and sand to the soil and sand separating vessel (3, 4), a treatment of sedimenting the washed soil and sand in the soil and sand separating vessel (3, 4), a treatment of sending out the water being present near the upper water surface to the scum separating vessel (19), a treatment of recovering a concentrated scum in the scum separating vessel (19), a treatment of reusing a separated water from the scum separating vessel (19) as a washing water and a treatment of discharging a soil and sand having been sedimented in the soil and sand separating vessel (3, 4).
Inventors:
Yousuke Shikata
Application Number:
JP2003165624A
Publication Date:
December 09, 2009
Filing Date:
June 10, 2003
Export Citation:
Assignee:
ETL Co., Ltd.
International Classes:
B09C1/00; B01D21/00; B03B5/00; B03B5/28; B03B5/66; B03B7/00; B03B9/00; B03B9/06; B03D1/02; B03D1/14; B09C1/02; C02F1/24
Domestic Patent References:
| JP2002336731A | ||||
| JP2002177942A | ||||
| JP5332469A | ||||
| JP5496475A |
Foreign References:
| WO1998037991A1 |
Attorney, Agent or Firm:
Atsushi Akiyama
Yuriko Shirota
Yuriko Shirota