GB603534A - Improvements relating to the removal of impurities from water or aqueous liquids - Google Patents
Improvements relating to the removal of impurities from water or aqueous liquidsInfo
- Publication number
- GB603534A GB603534A GB2795945A GB2795945A GB603534A GB 603534 A GB603534 A GB 603534A GB 2795945 A GB2795945 A GB 2795945A GB 2795945 A GB2795945 A GB 2795945A GB 603534 A GB603534 A GB 603534A
- Authority
- GB
- United Kingdom
- Prior art keywords
- converted
- water
- double
- lime
- hydroxide
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/60—Silicon compounds
Abstract
A material for purifying aqueous liquids is prepared by the calcination of double-hydrated dolomitic lime to the stage at which substantially all the magnesium hydroxide has been converted to magnesium oxide but no appreciable amount of the calcium hydroxide has been converted to calcium oxide. The material is prepared by treatment at a temperature between 300 and 700 DEG C. for at least ten minutes.ALSO:Silica and fluorides are removed from water and aqueous solutions by the addition of double-hydrated dolomitic lime which has been partly calcined, preferably to the stage at which substantially all the magnesium hydroxide has been converted to magnesium oxide but no appreciable amount of calcium hydroxide has been converted to calcium oxide. The sludge formed in the process when applied to softening water is allowed to accumulate and is agitated with the water and added treating material. The material is prepared by treatment at a temperature between 300 and 700 DEG C. for at least ten minutes.ALSO:In the purification of sugar juices normally treated with ordinary lime the substitution of a double-hydrated dolomitic lime which has been partly calcined assists in the removal of impurities simultaneously with the precipitation of the lime. The double hydrated dolomite is calcined to the stage where substantially all the magnesium hydroxide has been converted to magnesium oxide but none of the calcium hydroxide has been similarly converted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2795945A GB603534A (en) | 1945-10-23 | 1945-10-23 | Improvements relating to the removal of impurities from water or aqueous liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2795945A GB603534A (en) | 1945-10-23 | 1945-10-23 | Improvements relating to the removal of impurities from water or aqueous liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB603534A true GB603534A (en) | 1948-06-17 |
Family
ID=10268020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2795945A Expired GB603534A (en) | 1945-10-23 | 1945-10-23 | Improvements relating to the removal of impurities from water or aqueous liquids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB603534A (en) |
-
1945
- 1945-10-23 GB GB2795945A patent/GB603534A/en not_active Expired
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