Title:
【発明の名称】地盤掘削用泥水の処理方法
Document Type and Number:
Japanese Patent JP2636525
Kind Code:
B2
Abstract:
PURPOSE:To remove very fine grains from sediment contained in muddy water. CONSTITUTION:After being used for excavation, muddy water 18 is delivered from the inside of a channel 16 to a primary processing apparatus 20, where coarse grains are removed from sediment contained in the muddy water 18. After being made free from coarse grains through the primary processing apparatus 20, primary processed water 22 is delivered to a screw decanter 23, where fine grains are removed from sediment. After being made free from fine grains, intermediately processed water 25 is delivered to a secondary processing vessel 26, where very fine grains are removed from sediment. The secondary processing vessel 26 has a pair of opposedly installed electrode plates 28, 28. These electrode plates 28 have a DC positive electrode and a DC negative electrode connected thereto so that very fine grains are moved to the positive electrode side and adhere to the electrode plate 28 in conformity with the principle of electrophoresis. The very fine grains adhering to the electrode plate 28 are discharged out of the system, by pulling the electrode plate 28 upward.
Inventors:
KAWACHI TAKESHI
SAITO HIROBUMI
YOSHIZAKI MASAAKI
SUMIDA MITSUTERU
SAITO HIROBUMI
YOSHIZAKI MASAAKI
SUMIDA MITSUTERU
Application Number:
JP3516291A
Publication Date:
July 30, 1997
Filing Date:
February 05, 1991
Export Citation:
Assignee:
OOBAYASHIGUMI KK
International Classes:
B01D21/28; B01D36/00; B01D43/00; B03B5/00; B03B7/00; B03B9/00; B03C5/00; B04C9/00; C02F1/46; C02F1/469; C02F9/00; E21B21/06; (IPC1-7): E21B21/06; B01D21/28; B01D36/00; B03B9/00; B03C5/00; B04C9/00
Domestic Patent References:
| JP4612392B1 | ||||
| JP5322042B2 |
Attorney, Agent or Firm:
Kensuke Isshiki (1 person outside)