JPS57165100A - Chemical disposal of sludge - Google Patents
Chemical disposal of sludgeInfo
- Publication number
- JPS57165100A JPS57165100A JP56049442A JP4944281A JPS57165100A JP S57165100 A JPS57165100 A JP S57165100A JP 56049442 A JP56049442 A JP 56049442A JP 4944281 A JP4944281 A JP 4944281A JP S57165100 A JPS57165100 A JP S57165100A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- hypochlorite solution
- aqueous
- excess sludge
- excess
- 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)
Abstract
PURPOSE: To remarkably reduce a sludge amount and to save a fuel consumption amount necessary for drying and incinerating sludge, by decomposing excess sludge, discharged from an active sludge process for waste water, with use of an aqueous hypochlorite solution.
CONSTITUTION: Excess sludge, discharged from an active sludge process for waste water, is decomposed with use of an aqueous hypochlorite solution so that the concentration of effective chlorine remaining in the treated solution will be at 0.05W5%. The decomposition of the excess sludge may be done by throwing the excess sludge into the aqueous hypochlorite solution or by pouring the aqueous hypochlorite solution into the excess sludge. The decomposing reaction is accompanied with temperature-rising by 5W10°C and finished in 2W5hrs. The decomposed ratio of the sludge, after treated, reaches a high level of 85% or more, while the sludge amount is reduced to 15% or less. As the aqueous hypochlorite solution may be used an aqueous sodium hypochlorite solution, an aqueous calcium hypochlorite solution or the like.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56049442A JPS57165100A (en) | 1981-04-03 | 1981-04-03 | Chemical disposal of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56049442A JPS57165100A (en) | 1981-04-03 | 1981-04-03 | Chemical disposal of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57165100A true JPS57165100A (en) | 1982-10-09 |
Family
ID=12831230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56049442A Pending JPS57165100A (en) | 1981-04-03 | 1981-04-03 | Chemical disposal of sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57165100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008119655A (en) * | 2006-11-15 | 2008-05-29 | Nittetsu Kankyo Engineering Kk | Method for treating organic wastewater and chemicals used in the method |
-
1981
- 1981-04-03 JP JP56049442A patent/JPS57165100A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008119655A (en) * | 2006-11-15 | 2008-05-29 | Nittetsu Kankyo Engineering Kk | Method for treating organic wastewater and chemicals used in the method |
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