JPS5524503A - Harmful sludge treating method - Google Patents

Harmful sludge treating method

Info

Publication number
JPS5524503A
JPS5524503A JP7562278A JP7562278A JPS5524503A JP S5524503 A JPS5524503 A JP S5524503A JP 7562278 A JP7562278 A JP 7562278A JP 7562278 A JP7562278 A JP 7562278A JP S5524503 A JPS5524503 A JP S5524503A
Authority
JP
Japan
Prior art keywords
contg
sulfur
gypsum
waste
harmful
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.)
Pending
Application number
JP7562278A
Other languages
Japanese (ja)
Inventor
Yasuo Baba
Takeshi Osada
Hideo Fujimaki
Tomonari Tomita
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.)
Toray Engineering Co Ltd
Original Assignee
Toray Engineering Co 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 Toray Engineering Co Ltd filed Critical Toray Engineering Co Ltd
Priority to JP7562278A priority Critical patent/JPS5524503A/en
Publication of JPS5524503A publication Critical patent/JPS5524503A/en
Pending legal-status Critical Current

Links

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To make harmful matter-contg. waste such as sludge or dust harmless by uniformly mixing (hemihydrate) gypsum and a specified sulfur-contg. cpd. into the waste followed by solidification.
CONSTITUTION: To 100pts. wt. of harmful waste contg. harmful matter such as heavy metals and cyanogen, e.g. sludge of 60W90% water content or dust are added 50W1000pts. wt. of gypsum and/or hemihydrate gypsum and 0.1W50pts. wt. of one or more kinds of sulfur and sulfur-contg. cpds. selected from colloidal sulfur, water sol. org. cpds. each having a MW below 1000 and contg. thiocarbamate, thiourea or thiol group in its molecule, ferrous sulfate, sodium sulfide and calcium sulfide. They are then uniformly mixed and solidified.
COPYRIGHT: (C)1980,JPO&Japio
JP7562278A 1978-06-21 1978-06-21 Harmful sludge treating method Pending JPS5524503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7562278A JPS5524503A (en) 1978-06-21 1978-06-21 Harmful sludge treating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7562278A JPS5524503A (en) 1978-06-21 1978-06-21 Harmful sludge treating method

Publications (1)

Publication Number Publication Date
JPS5524503A true JPS5524503A (en) 1980-02-21

Family

ID=13581485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7562278A Pending JPS5524503A (en) 1978-06-21 1978-06-21 Harmful sludge treating method

Country Status (1)

Country Link
JP (1) JPS5524503A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507928A1 (en) * 1981-02-17 1982-12-24 United States Gypsum Co PROCESS FOR THE PREPARATION OF POLLUTION-FREE DISPOSABLE WASTE
FR2529193A1 (en) * 1982-06-29 1983-12-30 United States Gypsum Co Solvent or reactive waste processing - by hardening with water, calcium sulphate hemi:hydrate, melamine-formaldehyde! resin and crosslinking agent
US6388165B1 (en) * 1996-10-22 2002-05-14 Vasanth K. Bhat Method and compositions for stabilization of heavy metals, acid gas removal and pH control in contaminated matrices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507928A1 (en) * 1981-02-17 1982-12-24 United States Gypsum Co PROCESS FOR THE PREPARATION OF POLLUTION-FREE DISPOSABLE WASTE
FR2529193A1 (en) * 1982-06-29 1983-12-30 United States Gypsum Co Solvent or reactive waste processing - by hardening with water, calcium sulphate hemi:hydrate, melamine-formaldehyde! resin and crosslinking agent
US6388165B1 (en) * 1996-10-22 2002-05-14 Vasanth K. Bhat Method and compositions for stabilization of heavy metals, acid gas removal and pH control in contaminated matrices

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