GB812228A - Clarification of aqueous organic suspensions - Google Patents
Clarification of aqueous organic suspensionsInfo
- Publication number
- GB812228A GB812228A GB6938/57A GB693857A GB812228A GB 812228 A GB812228 A GB 812228A GB 6938/57 A GB6938/57 A GB 6938/57A GB 693857 A GB693857 A GB 693857A GB 812228 A GB812228 A GB 812228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonic acid
- aqueous
- derived
- finely divided
- vinyl
- 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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Aqueous suspensions of finely divided organic solids are clarified by incorporating in the suspension at least 0,01 pound (per short ton of suspended solids) of a water-soluble sulphonate (i.e. a sulphonic acid or salt thereof) derived from a high molecular weight poly (vinyl-aromatic) compound of the benzene series to increase the rate of sedimentation of the suspended solids. The aqueous suspension may be a waste water which must be clarified before discarding or reuse, and may be derived from a cannery, a sugar refinery or coal-washing plant. The sulphonates may be derived from polymers of stryrene, alpha-methyl styrene, vinyl toluene or vinyl xylene, or from linear copolymers of such materials with one another or with acrylic monomers (i.e. acrylonitrile, methacrylonitrile or the lower alkyl-esters of acrylic or methacrylic acid. Ammonium, lithium sodium, potassium and calcium salts of the sulphonic acids are mentioned. The sulphonates may be added to the aqueous suspensions in the form of aqueous solutions or they may be introduced as a finely divided solid in admixture with a finely divided inert solid. Before the sulphonate treatment, lime (in the form of finely divided calcium hydroxide or oxide, milk of lime or calcium hydroxide solution) may be added to the aqueous suspension. In the examples, (a) an aqueous slurry of coal fines from a coal crushing and cleaning milk, or a limed aqueous waste slurry of pea soup solids from a soup cannery, is treated with the sodium salt of the sulphonic acid derived from polyvinyltoluene or vinyl-toluene/acrylonitrile copolymer, (b) the aqueous slurry of coal fines is treated with free polyvinyltoluene sulphonic acid and (c) waste water from a beet sugar refinery is limed and treated with the sodium salt of polyvinyltoluene sulphonic acid or the potassium salt of polystyrene sulphonic acid. Specification 746,616 [Group IV(a)] is referred to.ALSO:Aqueous suspensions of finely divided solids are clarified by incorporating in the suspension at least 0.01 pound (per short ton of suspended solids) of a water-soluble sulphonate (i.e. a sulphonic acid or a salt thereof) derived from a high molecular weight poly-(vinyl-aromatic) compound of the benzene series to increase the rate of sedimentation of the suspended solids. In an example, first carbonation juice from a beet sugar refinery is treated with the sodium salt of polyvinyltoluene sulphonic acid. Specification 746,616, [Group IV (a)], is referred to.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US812228XA | 1956-03-05 | 1956-03-05 | |
US1173235XA | 1956-03-05 | 1956-03-05 | |
US569246A US3009873A (en) | 1956-03-05 | 1956-03-05 | Clarification of aqueous organic suspensions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB812228A true GB812228A (en) | 1959-04-22 |
Family
ID=27373933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6938/57A Expired GB812228A (en) | 1956-03-05 | 1957-03-01 | Clarification of aqueous organic suspensions |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1173235A (en) |
GB (1) | GB812228A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4849128A (en) * | 1981-03-24 | 1989-07-18 | Blue Circle Industries Limited | Process and composition for conditioning an aqueous system |
-
1957
- 1957-03-01 GB GB6938/57A patent/GB812228A/en not_active Expired
- 1957-03-05 FR FR1173235D patent/FR1173235A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4849128A (en) * | 1981-03-24 | 1989-07-18 | Blue Circle Industries Limited | Process and composition for conditioning an aqueous system |
Also Published As
Publication number | Publication date |
---|---|
FR1173235A (en) | 1959-02-23 |
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