GB1048041A - Improvements in or relating to the disposal of waste pickle liquors - Google Patents

Improvements in or relating to the disposal of waste pickle liquors

Info

Publication number
GB1048041A
GB1048041A GB3791561A GB3791561A GB1048041A GB 1048041 A GB1048041 A GB 1048041A GB 3791561 A GB3791561 A GB 3791561A GB 3791561 A GB3791561 A GB 3791561A GB 1048041 A GB1048041 A GB 1048041A
Authority
GB
United Kingdom
Prior art keywords
caco3
precipitate
feso4
equivalent
finely divided
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
Application number
GB3791561A
Inventor
John Oswald Samuel
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.)
UNIFLOC Ltd
Original Assignee
UNIFLOC Ltd
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 UNIFLOC Ltd filed Critical UNIFLOC Ltd
Priority to GB3791561A priority Critical patent/GB1048041A/en
Publication of GB1048041A publication Critical patent/GB1048041A/en
Expired 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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/62—Heavy metal compounds
    • C02F1/64—Heavy metal compounds of iron or manganese
    • C02F1/645—Devices for iron precipitation and treatment by air
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/203—Iron or iron compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time

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

Liquors containing up to 1% of H2SO4 and up to 1% FeSO4 are treated with finely divided CaCO3 in an amount at least sufficient to neutralize all the free acid present and to precipitate substantially all the iron as hydrated ferric oxide, the liquor being aerated during neutralization. The finely divided CaCO3 may be precipitated CaCO3, powdered whiting, or ground chalk a substantial part, e.g. 90% or more, of which has a particle size below 25 microns. The quantity employed may be that equivalent to the H2SO4 plus 1.5-2.0 times that equivalent to the FeSO4 and this may be supplemented by lime, Na2CO3 or powdered limestone. 90% or more of the total acidity may be neutralized by the CaCO3 the remainder being removed by an alkali-metal or alkaline earth metal hydroxide. The process may occur at at least 20 DEG C. and the precipitate may be flocculated by adding a starch/CaCl2 gel before or after precipitation. Should the liquor contain oil this may be absorbed on the ferric oxide precipitate.
GB3791561A 1961-10-23 1961-10-23 Improvements in or relating to the disposal of waste pickle liquors Expired GB1048041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3791561A GB1048041A (en) 1961-10-23 1961-10-23 Improvements in or relating to the disposal of waste pickle liquors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3791561A GB1048041A (en) 1961-10-23 1961-10-23 Improvements in or relating to the disposal of waste pickle liquors

Publications (1)

Publication Number Publication Date
GB1048041A true GB1048041A (en) 1966-11-09

Family

ID=10399910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3791561A Expired GB1048041A (en) 1961-10-23 1961-10-23 Improvements in or relating to the disposal of waste pickle liquors

Country Status (1)

Country Link
GB (1) GB1048041A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2406408A1 (en) * 1973-02-21 1974-08-29 Stora Kopparbergs Bergslags Ab PROCESS FOR PREPARATION OF HEAVY METALS FROM ACID AQUATIC SOLUTIONS
FR2382406A1 (en) * 1977-03-02 1978-09-29 Voest Ag Neutralising acid contg. liquors esp. metal cleaning liquors - using chalk of particle size below a half milli-meter
CN108164035A (en) * 2017-12-29 2018-06-15 四川福欣食品有限公司 A kind of recovery processing technique of bubble green pepper pickling brine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2406408A1 (en) * 1973-02-21 1974-08-29 Stora Kopparbergs Bergslags Ab PROCESS FOR PREPARATION OF HEAVY METALS FROM ACID AQUATIC SOLUTIONS
FR2382406A1 (en) * 1977-03-02 1978-09-29 Voest Ag Neutralising acid contg. liquors esp. metal cleaning liquors - using chalk of particle size below a half milli-meter
CN108164035A (en) * 2017-12-29 2018-06-15 四川福欣食品有限公司 A kind of recovery processing technique of bubble green pepper pickling brine

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