JPS5524503A - Harmful sludge treating method - Google Patents
Harmful sludge treating methodInfo
- 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
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
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)
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 |
-
1978
- 1978-06-21 JP JP7562278A patent/JPS5524503A/en active Pending
Cited By (3)
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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