JPS5735991A - Disposal of waste liquid - Google Patents
Disposal of waste liquidInfo
- Publication number
- JPS5735991A JPS5735991A JP11015580A JP11015580A JPS5735991A JP S5735991 A JPS5735991 A JP S5735991A JP 11015580 A JP11015580 A JP 11015580A JP 11015580 A JP11015580 A JP 11015580A JP S5735991 A JPS5735991 A JP S5735991A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- hydrogen peroxide
- forming compound
- sodium carbonate
- generated
- 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
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
PURPOSE: To decompose efficiently hydrogen peroxide in waste liquid, which is generated in the process of reacting sodium carbonate with hydrogen peroxide to produce sodium percarbonate, by heating the waste liquid at 40°C or higher under an agitating condition, and then neutralizing the heated waste liquid.
CONSTITUTION: The waste liquid, which is generated in the process of reacting sodium carbonate with hydrogen peroxide to produce sodium percarbonate, is heated at 40°C or higher in the presence of a Ca++-forming compound under an agitating condition, to decompose most of hydrogen peroxide. Thereafter, sodium carbonate in the waste liquid is neutralized with an acid, e.g. sulfuric acid or hydrochloric acid, so as to make the pH value of the waste liquid about 7 and to convert the waste liquid into a drainage-allowable state. Calcium chloride, calcium nitrate or the like may be used as the said Ca++-forming compound. The Ca++-forming compound is added at a rate of an equal molW2mol to a stabilizer in the waste liquid. Heating is preferably done at 40W70°C by using waste steam generated in the sodium percarbonate-producing process.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11015580A JPS5735991A (en) | 1980-08-11 | 1980-08-11 | Disposal of waste liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11015580A JPS5735991A (en) | 1980-08-11 | 1980-08-11 | Disposal of waste liquid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5735991A true JPS5735991A (en) | 1982-02-26 |
JPH0131955B2 JPH0131955B2 (en) | 1989-06-28 |
Family
ID=14528439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11015580A Granted JPS5735991A (en) | 1980-08-11 | 1980-08-11 | Disposal of waste liquid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5735991A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004532104A (en) * | 2001-04-09 | 2004-10-21 | エイケイ・プロパティーズ・インコーポレイテッド | Apparatus and method for removing hydrogen peroxide from pickling waste liquid |
-
1980
- 1980-08-11 JP JP11015580A patent/JPS5735991A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004532104A (en) * | 2001-04-09 | 2004-10-21 | エイケイ・プロパティーズ・インコーポレイテッド | Apparatus and method for removing hydrogen peroxide from pickling waste liquid |
Also Published As
Publication number | Publication date |
---|---|
JPH0131955B2 (en) | 1989-06-28 |
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