JPS5663000A - Chromic acid reduction processing method - Google Patents

Chromic acid reduction processing method

Info

Publication number
JPS5663000A
JPS5663000A JP13734979A JP13734979A JPS5663000A JP S5663000 A JPS5663000 A JP S5663000A JP 13734979 A JP13734979 A JP 13734979A JP 13734979 A JP13734979 A JP 13734979A JP S5663000 A JPS5663000 A JP S5663000A
Authority
JP
Japan
Prior art keywords
chromic acid
electrolytic solution
liquid
electrolytic
processing method
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
JP13734979A
Other languages
Japanese (ja)
Other versions
JPS6128760B2 (en
Inventor
Minoru Tanaka
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.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric Co 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 Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to JP13734979A priority Critical patent/JPS5663000A/en
Publication of JPS5663000A publication Critical patent/JPS5663000A/en
Publication of JPS6128760B2 publication Critical patent/JPS6128760B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

PURPOSE: To reduce chromic acid economically and effectively, by adding a liquid, where the iron metal is dissolved in the nitric acid liquid of pH within a specific range, to the electrolytic solution of the electrolytic processing means where chromic acid is generated.
CONSTITUTION: The electrolytic solution containing chromic acid is taken out through the electrolytic processing from the electrolytic processing machine. The liquid where the iron metal is dissolved in the nitric acid liquid of pH0W2 is added to this electrolytic solution. Otherwise, it may be added after neutralizing the electrolytic solution by caustic soda. Therefore, chromic acid is reduced into unsoluble chromium nitrate or into unsoluble chromium hydroxide due to neutralization. They are filtered and separated from each other and are used again as the electrolytic solution.
COPYRIGHT: (C)1981,JPO&Japio
JP13734979A 1979-10-24 1979-10-24 Chromic acid reduction processing method Granted JPS5663000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13734979A JPS5663000A (en) 1979-10-24 1979-10-24 Chromic acid reduction processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13734979A JPS5663000A (en) 1979-10-24 1979-10-24 Chromic acid reduction processing method

Publications (2)

Publication Number Publication Date
JPS5663000A true JPS5663000A (en) 1981-05-29
JPS6128760B2 JPS6128760B2 (en) 1986-07-02

Family

ID=15196562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13734979A Granted JPS5663000A (en) 1979-10-24 1979-10-24 Chromic acid reduction processing method

Country Status (1)

Country Link
JP (1) JPS5663000A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462911A (en) * 1981-04-16 1984-07-31 Andritz-Ruthner Industrieanlagen Aktiengesellschaft Detoxification or decontamination of effluents and/or flue gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462911A (en) * 1981-04-16 1984-07-31 Andritz-Ruthner Industrieanlagen Aktiengesellschaft Detoxification or decontamination of effluents and/or flue gases

Also Published As

Publication number Publication date
JPS6128760B2 (en) 1986-07-02

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