FR2446260A1 - Treating water contg. lime with carbon di:oxide - then recycling the pptd. chalk to the water before prodn. of gas, esp. in novel appts. - Google Patents
Treating water contg. lime with carbon di:oxide - then recycling the pptd. chalk to the water before prodn. of gas, esp. in novel appts.Info
- Publication number
- FR2446260A1 FR2446260A1 FR7900838A FR7900838A FR2446260A1 FR 2446260 A1 FR2446260 A1 FR 2446260A1 FR 7900838 A FR7900838 A FR 7900838A FR 7900838 A FR7900838 A FR 7900838A FR 2446260 A1 FR2446260 A1 FR 2446260A1
- Authority
- FR
- France
- Prior art keywords
- gas
- pptd
- lime
- recycling
- water
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
Process comprises addn. of a gas rich in CO2, with recycling of the pptd. CaCO3 sludge into the water before introducing the CO2 gas. Process is carried out in an appts. comprising a water feed area at the base at the centre of a decantation zone, lower part of which is a zone for forming the sludge/water dispersion with means to pass the dispersion to an area with means for CO2 gas injection. Process is used for examples for treating water contg. colloidal organic material with lime to absorb it in the CaCO3. It avoids incrustation and the appts. is suitable for both operations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7900838A FR2446260A1 (en) | 1979-01-15 | 1979-01-15 | Treating water contg. lime with carbon di:oxide - then recycling the pptd. chalk to the water before prodn. of gas, esp. in novel appts. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7900838A FR2446260A1 (en) | 1979-01-15 | 1979-01-15 | Treating water contg. lime with carbon di:oxide - then recycling the pptd. chalk to the water before prodn. of gas, esp. in novel appts. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2446260A1 true FR2446260A1 (en) | 1980-08-08 |
FR2446260B1 FR2446260B1 (en) | 1982-08-13 |
Family
ID=9220729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7900838A Granted FR2446260A1 (en) | 1979-01-15 | 1979-01-15 | Treating water contg. lime with carbon di:oxide - then recycling the pptd. chalk to the water before prodn. of gas, esp. in novel appts. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2446260A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988009832A1 (en) * | 1987-06-12 | 1988-12-15 | Luc Legrand | Process and installation for preventing corrosion of water pipes |
DE3917415A1 (en) * | 1989-05-29 | 1990-12-06 | Linde Ag | METHOD FOR PURIFYING WASTE WATER |
NL1002364C2 (en) * | 1996-02-16 | 1997-08-19 | Dhv Water Bv | Fluorine compound removal from gas streams |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE359883A (en) * | ||||
US2678916A (en) * | 1949-12-07 | 1954-05-18 | Infilco Inc | Apparatus for treating a liquid with a gas |
GB1090822A (en) * | 1963-11-29 | 1967-11-15 | Kimberly Clark Co | A water treatment process |
-
1979
- 1979-01-15 FR FR7900838A patent/FR2446260A1/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE359883A (en) * | ||||
US2678916A (en) * | 1949-12-07 | 1954-05-18 | Infilco Inc | Apparatus for treating a liquid with a gas |
GB1090822A (en) * | 1963-11-29 | 1967-11-15 | Kimberly Clark Co | A water treatment process |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988009832A1 (en) * | 1987-06-12 | 1988-12-15 | Luc Legrand | Process and installation for preventing corrosion of water pipes |
FR2616451A1 (en) * | 1987-06-12 | 1988-12-16 | Legrand Luc | METHOD AND INSTALLATION FOR PROTECTING WATER PIPES AGAINST CORROSION |
US5051281A (en) * | 1987-06-12 | 1991-09-24 | Luc Legrand | Process and plant for protecting water pipeworks from corrosion |
DE3917415A1 (en) * | 1989-05-29 | 1990-12-06 | Linde Ag | METHOD FOR PURIFYING WASTE WATER |
DE3917415C2 (en) * | 1989-05-29 | 1999-01-14 | Linde Ag | Wastewater treatment processes |
NL1002364C2 (en) * | 1996-02-16 | 1997-08-19 | Dhv Water Bv | Fluorine compound removal from gas streams |
Also Published As
Publication number | Publication date |
---|---|
FR2446260B1 (en) | 1982-08-13 |
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