JPS5616739A - Sludge dredging method - Google Patents
Sludge dredging methodInfo
- Publication number
- JPS5616739A JPS5616739A JP9140279A JP9140279A JPS5616739A JP S5616739 A JPS5616739 A JP S5616739A JP 9140279 A JP9140279 A JP 9140279A JP 9140279 A JP9140279 A JP 9140279A JP S5616739 A JPS5616739 A JP S5616739A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- zone
- dredging
- removal
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To provide an efficient dredging of sludge which permits grab dredging without diffusion of drifting sludge while preventing the inflow of surrounding sludge into the zone after the removal of sludge in the zone.
CONSTITUTION: Sludge-accumulated area is designated by a zone 2. A gelling agent, for example, water glass affiliated chemical (sodium silicate or potassium silicate) and acidity neutrolizing agent (mineral acid, CO2 or the like) are injected into the aludge (bottom) layer 5 in the zone 2 and mixed together. The sludge layer 5 is gelled thoroughly in the zone 2 at the original position to eliminate the fluidity and diffusivity of the sludge. With the removal of the sludge in the zone 2, the dredging is performed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9140279A JPS6056852B2 (en) | 1979-07-17 | 1979-07-17 | Sludge dredging method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9140279A JPS6056852B2 (en) | 1979-07-17 | 1979-07-17 | Sludge dredging method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5616739A true JPS5616739A (en) | 1981-02-18 |
JPS6056852B2 JPS6056852B2 (en) | 1985-12-12 |
Family
ID=14025378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9140279A Expired JPS6056852B2 (en) | 1979-07-17 | 1979-07-17 | Sludge dredging method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6056852B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5887153U (en) * | 1981-12-08 | 1983-06-13 | シャープ株式会社 | Tape recorder track interval detection device |
US4680879A (en) * | 1985-06-28 | 1987-07-21 | Pjh, Inc. | Underwater dredging apparatus and cutter head therefor |
JPH02167931A (en) * | 1988-12-22 | 1990-06-28 | Sanyu Kogyo Kk | Solidifying and dredging work for sludge |
-
1979
- 1979-07-17 JP JP9140279A patent/JPS6056852B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5887153U (en) * | 1981-12-08 | 1983-06-13 | シャープ株式会社 | Tape recorder track interval detection device |
US4680879A (en) * | 1985-06-28 | 1987-07-21 | Pjh, Inc. | Underwater dredging apparatus and cutter head therefor |
JPH02167931A (en) * | 1988-12-22 | 1990-06-28 | Sanyu Kogyo Kk | Solidifying and dredging work for sludge |
Also Published As
Publication number | Publication date |
---|---|
JPS6056852B2 (en) | 1985-12-12 |
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