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JPS5616739A - Sludge dredging method - Google Patents

Sludge dredging method

Info

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
Application number
JP9140279A
Other languages
Japanese (ja)
Other versions
JPS6056852B2 (en
Inventor
Nobuyuki Yoshida
Etsuo Ogino
Takao Arai
Noboru Negishi
Akira Okada
Naojiro Oshita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON II B KK
Sanyu Industries Ltd
Kanadevia Corp
Original Assignee
NIPPON II B KK
Hitachi Zosen Corp
Sanyu Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPON II B KK, Hitachi Zosen Corp, Sanyu Industries Ltd filed Critical NIPPON II B KK
Priority to JP9140279A priority Critical patent/JPS6056852B2/en
Publication of JPS5616739A publication Critical patent/JPS5616739A/en
Publication of JPS6056852B2 publication Critical patent/JPS6056852B2/en
Expired legal-status Critical Current

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
JP9140279A 1979-07-17 1979-07-17 Sludge dredging method Expired JPS6056852B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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