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
Application number
FR7900838A
Other languages
French (fr)
Other versions
FR2446260B1 (en
Inventor
Francois Berne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suez International SAS
Original Assignee
Degremont SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Degremont SA filed Critical Degremont SA
Priority to FR7900838A priority Critical patent/FR2446260A1/en
Publication of FR2446260A1 publication Critical patent/FR2446260A1/en
Application granted granted Critical
Publication of FR2446260B1 publication Critical patent/FR2446260B1/fr
Granted legal-status Critical Current

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.
FR7900838A 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. Granted FR2446260A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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