JPS55129195A - Filamentous bacteria exterminating method in activated sludge treatment - Google Patents
Filamentous bacteria exterminating method in activated sludge treatmentInfo
- Publication number
- JPS55129195A JPS55129195A JP3556079A JP3556079A JPS55129195A JP S55129195 A JPS55129195 A JP S55129195A JP 3556079 A JP3556079 A JP 3556079A JP 3556079 A JP3556079 A JP 3556079A JP S55129195 A JPS55129195 A JP S55129195A
- Authority
- JP
- Japan
- Prior art keywords
- salts
- osmotic press
- water
- press
- osmotic
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Activated Sludge Processes (AREA)
Abstract
PURPOSE: To recover the settleability of activated sludge by raising the osmotic press. of liquor in an aeration tank to 5 atm or more to exterminate filamentous bacteria propagated in the sludge.
CONSTITUTION: By adding salts such as table salt or sodium sulfate to water treated with activated carbon whose settleability has been deteriorated by propagation of filamentous bacteria, the osmotic press. of the water is raised to 5 atm or more to exterminate the bacteria. When the amt. of the salts added is known, the osmotic press. is obtd. almost approximately (dissolvable org. constituents are neglected) according to the following van't Hoff's equation of osmotic press.: π=i.R.T.C (where π is osmotic press., i is the van't Hoff's factor, R is the gas constant, T is the absolute temp. and C is the solute mol no.). When the concn., etc. of the salts in the water are not clear, the amt. of the salts to be added can be adjusted with an osmometer so that the water becomes the predetermined osmotic press.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3556079A JPS55129195A (en) | 1979-03-28 | 1979-03-28 | Filamentous bacteria exterminating method in activated sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3556079A JPS55129195A (en) | 1979-03-28 | 1979-03-28 | Filamentous bacteria exterminating method in activated sludge treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55129195A true JPS55129195A (en) | 1980-10-06 |
Family
ID=12445114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3556079A Pending JPS55129195A (en) | 1979-03-28 | 1979-03-28 | Filamentous bacteria exterminating method in activated sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55129195A (en) |
-
1979
- 1979-03-28 JP JP3556079A patent/JPS55129195A/en active Pending
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