FR2247427A2 - Compaction appts for fluid sludges - with slow stirrers and controlled evacuation pump - Google Patents
Compaction appts for fluid sludges - with slow stirrers and controlled evacuation pumpInfo
- Publication number
- FR2247427A2 FR2247427A2 FR7336238A FR7336238A FR2247427A2 FR 2247427 A2 FR2247427 A2 FR 2247427A2 FR 7336238 A FR7336238 A FR 7336238A FR 7336238 A FR7336238 A FR 7336238A FR 2247427 A2 FR2247427 A2 FR 2247427A2
- Authority
- FR
- France
- Prior art keywords
- outlet
- sludge
- appts
- pump
- liq
- 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
- 239000012530 fluid Substances 0.000 title abstract 2
- 238000005056 compaction Methods 0.000 title 1
- 239000010802 sludge Substances 0.000 abstract 4
- 230000016615 flocculation Effects 0.000 abstract 1
- 238000005189 flocculation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229920001059 synthetic polymer Polymers 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
A process for squeezing or compacting fluid sludges contg. fine material 0.02 mm is descuted in the parent patent, the sludge, from a preliminary prim. and sec. flocculation treatment, being agitated in its original suspending liq. so that the floccules increase in vol. and density, the interstitial liq. being removed upwards and the compacted mass of sludge leaving the outlet at the bottom of the appts. The outlet is now controlled by an extn. pump whose speed is adjusted by level detectors. The sludge and a flocculant, generally a synthetic polymer, enter the tanic via a lateral inlet, the floccules are re-formed and descend a vertical tube to a distributing deflector. The larger floccules pass to the bottom of the tank and are pushed downwards by perforated, rotating blades, while the clear liq. rises to the overflow to be evacuated by a pipe. A conical endless screw driven by a motor on the same shaft as the blades, compacts the sludge into a mass which is evacuated by pump from the outlet on to a conveyor. The appts. can deal with very variable sludges and the pump can be stopped to block the outlet if the mixt. becomes too dil.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7336238A FR2247427A2 (en) | 1973-10-10 | 1973-10-10 | Compaction appts for fluid sludges - with slow stirrers and controlled evacuation pump |
| IL43598A IL43598A (en) | 1972-11-28 | 1973-11-08 | Method and device for compacting fluid sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7336238A FR2247427A2 (en) | 1973-10-10 | 1973-10-10 | Compaction appts for fluid sludges - with slow stirrers and controlled evacuation pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2247427A2 true FR2247427A2 (en) | 1975-05-09 |
| FR2247427B2 FR2247427B2 (en) | 1977-05-27 |
Family
ID=9126216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7336238A Granted FR2247427A2 (en) | 1972-11-28 | 1973-10-10 | Compaction appts for fluid sludges - with slow stirrers and controlled evacuation pump |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2247427A2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2835553A1 (en) * | 1977-08-23 | 1979-03-08 | Fives Cail Babcock | FLOCKER THICKENER |
| WO2010031120A1 (en) * | 2008-09-17 | 2010-03-25 | Outotec Oyj | A method for controlling the disturbance of networked pulp |
| US8641909B2 (en) | 2008-09-17 | 2014-02-04 | Outotec Oyj | Method and apparatus for disturbing networked pulp |
| CN110117098A (en) * | 2019-05-10 | 2019-08-13 | 大成科创基础建设股份有限公司 | A kind of processing method and processing device that discarded slurry recycles |
| GB2578469A (en) * | 2018-10-29 | 2020-05-13 | Cde Global Ltd | Method and apparatus for reducing the water content of waste water sludge |
-
1973
- 1973-10-10 FR FR7336238A patent/FR2247427A2/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2835553A1 (en) * | 1977-08-23 | 1979-03-08 | Fives Cail Babcock | FLOCKER THICKENER |
| WO2010031120A1 (en) * | 2008-09-17 | 2010-03-25 | Outotec Oyj | A method for controlling the disturbance of networked pulp |
| US8641909B2 (en) | 2008-09-17 | 2014-02-04 | Outotec Oyj | Method and apparatus for disturbing networked pulp |
| GB2578469A (en) * | 2018-10-29 | 2020-05-13 | Cde Global Ltd | Method and apparatus for reducing the water content of waste water sludge |
| GB2578469B (en) * | 2018-10-29 | 2022-03-16 | Cde Global Ltd | Method and apparatus for reducing the water content of waste water sludge |
| US11471793B2 (en) | 2018-10-29 | 2022-10-18 | Cde Global Limited | Method and apparatus for reducing the water content of waste water sludge |
| CN110117098A (en) * | 2019-05-10 | 2019-08-13 | 大成科创基础建设股份有限公司 | A kind of processing method and processing device that discarded slurry recycles |
| CN110117098B (en) * | 2019-05-10 | 2022-03-01 | 大成科创基础建设股份有限公司 | Treatment method and device for recycling waste slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2247427B2 (en) | 1977-05-27 |
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