GB862589A - Improvements in sedimentation processes - Google Patents
Improvements in sedimentation processesInfo
- Publication number
- GB862589A GB862589A GB3213657A GB3213657A GB862589A GB 862589 A GB862589 A GB 862589A GB 3213657 A GB3213657 A GB 3213657A GB 3213657 A GB3213657 A GB 3213657A GB 862589 A GB862589 A GB 862589A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copolymer
- sludge
- suspension
- sedimentation
- added
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The sedimentation of solids, e.g. coal, kaolin, clay and ores, in sludges or suspensions is accelerated by the addition thereto of a water-soluble copolymer derived from monomers comprising acrylic acid, acrylonitrile and an acrylate of an aliphatic alcohol, the copolymer being prepared in accordance with Specification 831,832 (see Group IV(a)). The copolymer has a K value of 80 to 200 and is added in an amount insufficient to cause stabilization of the sludge or suspension, said amount being preferably 0.1 to 1.0 gram/cubic metre of sludge or suspension, the copolymer being added preferably in the form of a 0.5 to 2.0% aqueous solution.ALSO:The sedimentation of solids, e.g. coal, kaolin, clay and ores, in sludges or suspensions is accelerated by the addition thereto of a water-soluble copolymer derived from monomers comprising acrylic acid, acrylonitrile and an acrylate of an aliphatic alcohol, the copolymer being prepared in accordance with Specification 831,832 (see Group IV (a)). The copolymer has a K value of 80 to 200 and is added in an amount insufficient to cause stabilisation of the sludge or suspension, said amount being preferably 0,1 to 1,0 gram/cubic metre of sludge or suspension, the copolymer being added preferably in the form of a 0,5 to 2,0% aqueous solution. In examples the sedimentation of coal washing liquors and clay and kaolin sludges is described.ALSO:The sedimentation of solids, e.g. coal, kaolin, clay and ores, in sludges or suspensions is accelerated by the addition thereto of a water-soluble copolymer derived from monomers comprising acrylic acid, acrylonitrile and an acrylate of an aliphatic alcohol, the copolymer being prepared in accordance with Specification 831,832 (see Group IV (a)). The coplymer has a K value of 80 to 200 and is added in an amount insufficient to cause stabilization of the sludge or suspension, said amount being preferably 0.1 to 1.0 gram/cubic metre of sludge or suspension, the copolymer being added preferably in the form of a 0.5 to 2.0% aqueous solution. In examples the sedimentation of coal washing liquors and clay and kaolin sludges is described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB42170A DE1098490B (en) | 1956-10-18 | 1956-10-18 | Use of copolymers as sedimentation aids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB862589A true GB862589A (en) | 1961-03-15 |
Family
ID=6966651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3213657A Expired GB862589A (en) | 1956-10-18 | 1957-10-15 | Improvements in sedimentation processes |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1098490B (en) |
| GB (1) | GB862589A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1254592B (en) * | 1961-09-05 | 1967-11-23 | Dow Chemical Co | Process to improve the filterability of aqueous organic slimes |
| DE1243646B (en) * | 1961-11-17 | 1967-07-06 | Zschimmer & Schwarz | Use of water-soluble condensation products as flocculants |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB725460A (en) * | 1952-06-27 | 1955-03-02 | American Cyanamid Co | Improvements relating to the process of facilitating the dewatering of aqueous suspensions of finely-divided minerals |
| DE931591C (en) * | 1952-10-14 | 1955-08-11 | Wintershall Ag | Process for clarifying the Trueben of inorganic salt solutions by decanting |
-
1956
- 1956-10-18 DE DEB42170A patent/DE1098490B/en active Pending
-
1957
- 1957-10-15 GB GB3213657A patent/GB862589A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1098490B (en) | 1961-02-02 |
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