Title:
DEHYDRATING TREATMENT OF MUDDY WATER
Document Type and Number:
Japanese Patent JP3705012
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently dehydrate highly concentrated and highly viscous muddy water discharged at a time of civil engineering/building construction.
SOLUTION: Muddy water with a specific gravity of 1.2 or more is supplied to a paddle type flocculation reaction tank 1 constituted so that a pair of paddle shafts 4a, 4b having a large number of stirring feed blades 3, 3... attached to the outer peripheries thereof are mutually rotated in opposite directions while meshing the stirring feed blades 3, 3... and a dehydrating agent consisting of a cationic polymeric flocculant, an anionic polymeric flocculant and a water soluble salt is also added to the reaction tank 1 and muddy water and the dehydrating agent are stirred and mixed by the paddle shafts 4a, 4b to form flocs by the flocculation of a mud component and these flocs are dehydrated to form a dehydrated cake low in water content.
Inventors:
Hideo Tsugawa
Masahiro Kato
Masahiro Kato
Application Number:
JP14325099A
Publication Date:
October 12, 2005
Filing Date:
May 24, 1999
Export Citation:
Assignee:
Toagosei Co., Ltd.
International Classes:
B01D21/01; C02F11/14; E02F7/00; (IPC1-7): C02F11/14; B01D21/01; E02F7/00
Domestic Patent References:
| JP10272306A | ||||
| JP62289300A | ||||
| JP9168800A | ||||
| JP9125873A |
Attorney, Agent or Firm:
Masahiro Koda
Previous Patent: MANUFACTURE OF ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER
Next Patent: SEMICONDUCTOR ELEMENT AND ITS MANUFACTURE
Next Patent: SEMICONDUCTOR ELEMENT AND ITS MANUFACTURE