JPS5550467A - Treating method for exhaust liquid containing chromium - Google Patents

Treating method for exhaust liquid containing chromium

Info

Publication number
JPS5550467A
JPS5550467A JP12263778A JP12263778A JPS5550467A JP S5550467 A JPS5550467 A JP S5550467A JP 12263778 A JP12263778 A JP 12263778A JP 12263778 A JP12263778 A JP 12263778A JP S5550467 A JPS5550467 A JP S5550467A
Authority
JP
Japan
Prior art keywords
alkali
mineral
chromic acid
mineral acids
liquid
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.)
Pending
Application number
JP12263778A
Other languages
Japanese (ja)
Inventor
Akio Sakotani
Toru Gomi
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.)
KATSUKAWA HEITARO
KATSUKAWA HEITAROU
Original Assignee
KATSUKAWA HEITARO
KATSUKAWA HEITAROU
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 KATSUKAWA HEITARO, KATSUKAWA HEITAROU filed Critical KATSUKAWA HEITARO
Priority to JP12263778A priority Critical patent/JPS5550467A/en
Publication of JPS5550467A publication Critical patent/JPS5550467A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/86—Regeneration of coating baths

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE:To recover chromic acid and mineral acid, by adding alkali to the ex- haust liquid containg trivalent chromium salt and mineral acid salts of the other meatls and also, (not) containing mineral acids and making the residual liquid at a specific pH value after separating another metals hydroxide and then, adsorbing alkaline component by anion exchange resin etc. CONSTITUTION:Alkali is added to the exhaust liquid discharged from the formation treatment of Al, containing trivalent chromium salt and mineral acid salts of the other metals (AlPO4 etc.) and also, (not) containing mineral acids and then, hydroxides, such as Al(OH)3 etc., are separated. Next, pH of residual liquid is made more than ten and alkaline component is removed by adsorption by treating with anion exchange resin or metal adsorbent after forming hexavalent chromic acid alkali and then, chromic acid and mineral acids are recovered.
JP12263778A 1978-10-06 1978-10-06 Treating method for exhaust liquid containing chromium Pending JPS5550467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12263778A JPS5550467A (en) 1978-10-06 1978-10-06 Treating method for exhaust liquid containing chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12263778A JPS5550467A (en) 1978-10-06 1978-10-06 Treating method for exhaust liquid containing chromium

Publications (1)

Publication Number Publication Date
JPS5550467A true JPS5550467A (en) 1980-04-12

Family

ID=14840891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12263778A Pending JPS5550467A (en) 1978-10-06 1978-10-06 Treating method for exhaust liquid containing chromium

Country Status (1)

Country Link
JP (1) JPS5550467A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6846416B2 (en) 2000-07-31 2005-01-25 Ngk Spark Plug Co., Ltd. Process for treating chromate waste liquid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933470A (en) * 1972-07-26 1974-03-27
JPS5065468A (en) * 1973-10-12 1975-06-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933470A (en) * 1972-07-26 1974-03-27
JPS5065468A (en) * 1973-10-12 1975-06-03

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6846416B2 (en) 2000-07-31 2005-01-25 Ngk Spark Plug Co., Ltd. Process for treating chromate waste liquid

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