JPS5697593A - Apparatus for controlling sludge turbidity in aeration vessel - Google Patents
Apparatus for controlling sludge turbidity in aeration vesselInfo
- Publication number
- JPS5697593A JPS5697593A JP7680A JP7680A JPS5697593A JP S5697593 A JPS5697593 A JP S5697593A JP 7680 A JP7680 A JP 7680A JP 7680 A JP7680 A JP 7680A JP S5697593 A JPS5697593 A JP S5697593A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- amount
- turbidity
- returning
- circuit
- 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
Abstract
PURPOSE: To enable to keep a sufficient amount of a precipitated sludge in a precipitation vessel, by using a returning rate correcting circuit which generates a new sludge returning rate, to return a proper amount of a sludge from the precipitation vessel to an aeration vessel, in case where a sewage in-flow amount is lower than a predetermined level.
CONSTITUTION: The turbidity of a suspended matter SO of a slowing-in sewage is measured by a turbidity meter 5. A returning sludge turbidity SR is measured by a meter 7. These turbidity values are fed to a returning rate computing circuit 8. The computing circuit 8 is also fed with an objective MLSS value SP from a sludge turbidity (MLSS) setter 9. The computing circuit 8 calculates a sludge returning rate α on the basis of these velues. On the other hand, an in-flow sewage amount QO is measured by a flow meter 4, and compared with a preset value QS by a relay control circuit 14. In case where the in-flow sewage amount QO is lower than the preset value QS, the control circuit 14 closes a relay switch 13 to a side b. Then, the sludge returning rate α calculated by the circuit 8 is fed through a returning rate correcting circuit 12 to a sludge amount computing circuit 10. Thus, the sludge returning amount is controlled.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7680A JPS5697593A (en) | 1980-01-07 | 1980-01-07 | Apparatus for controlling sludge turbidity in aeration vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7680A JPS5697593A (en) | 1980-01-07 | 1980-01-07 | Apparatus for controlling sludge turbidity in aeration vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5697593A true JPS5697593A (en) | 1981-08-06 |
Family
ID=11464070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7680A Pending JPS5697593A (en) | 1980-01-07 | 1980-01-07 | Apparatus for controlling sludge turbidity in aeration vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5697593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58166897U (en) * | 1982-04-30 | 1983-11-07 | 株式会社西原環境衛生研究所 | Batch type activated sludge treatment equipment |
-
1980
- 1980-01-07 JP JP7680A patent/JPS5697593A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58166897U (en) * | 1982-04-30 | 1983-11-07 | 株式会社西原環境衛生研究所 | Batch type activated sludge treatment equipment |
| JPH022479Y2 (en) * | 1982-04-30 | 1990-01-22 |
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