JPS5648300A - Neutralization method of excess sludge mixed with slaked lime - Google Patents
Neutralization method of excess sludge mixed with slaked limeInfo
- Publication number
- JPS5648300A JPS5648300A JP12455279A JP12455279A JPS5648300A JP S5648300 A JPS5648300 A JP S5648300A JP 12455279 A JP12455279 A JP 12455279A JP 12455279 A JP12455279 A JP 12455279A JP S5648300 A JPS5648300 A JP S5648300A
- Authority
- JP
- Japan
- Prior art keywords
- excess sludge
- slaked lime
- neutralization
- sludge
- fermentation
- 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
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
PURPOSE: To rapidly and inexpensively neutralize the excess sludge mixed with slaked lime and make composting easy, in neutralizing said sludge, by forcibly contacting the same with carbonic acid gas thereby lowering the pH of the excess sludge down to the value suited for fermentation.
CONSTITUTION: In a neutralization method of highly alkaline excess sludge mixed with slaked lime produced from a night soil treating plant etc., the sludge is forcibly contacted with carbonic acid gas to lower the pH of the excess sludge down to the pH value (about 8W9) suited for fermentation. According to this method, the neutralization of the excess sludge may be performed more rapidly than inconventional methods and the time for preparation of fermentation of the case when the excess sludge is left piled in the field as it is considerably reduced; in addition, no hydrochloric acid is used as a neutralizer unlike in conventional methods and the neutralization of the excess sludge may be accomplished extremely inexpensively by making use of the CO2 contained in the exhaust gases of waste incineration plants etc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12455279A JPS5648300A (en) | 1979-09-26 | 1979-09-26 | Neutralization method of excess sludge mixed with slaked lime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12455279A JPS5648300A (en) | 1979-09-26 | 1979-09-26 | Neutralization method of excess sludge mixed with slaked lime |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5648300A true JPS5648300A (en) | 1981-05-01 |
Family
ID=14888297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12455279A Pending JPS5648300A (en) | 1979-09-26 | 1979-09-26 | Neutralization method of excess sludge mixed with slaked lime |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5648300A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59500701A (en) * | 1983-04-11 | 1984-04-26 | ジエイムズ リヴア−−デイキシ− ／ ノ−ザン インコ−ポレ−テツド | Rigid paperboard container and method and apparatus for manufacturing the same |
| KR100387340B1 (en) * | 2001-12-04 | 2003-06-11 | Kyu Jae You | Weak alkaline organic fertilizer using organic waste such as food garbages and preparation thereof |
-
1979
- 1979-09-26 JP JP12455279A patent/JPS5648300A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59500701A (en) * | 1983-04-11 | 1984-04-26 | ジエイムズ リヴア−−デイキシ− ／ ノ−ザン インコ−ポレ−テツド | Rigid paperboard container and method and apparatus for manufacturing the same |
| KR100387340B1 (en) * | 2001-12-04 | 2003-06-11 | Kyu Jae You | Weak alkaline organic fertilizer using organic waste such as food garbages and preparation thereof |
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