JPS5695390A - Treating method for waste water containing chromic acid - Google Patents

Treating method for waste water containing chromic acid

Info

Publication number
JPS5695390A
JPS5695390A JP17234379A JP17234379A JPS5695390A JP S5695390 A JPS5695390 A JP S5695390A JP 17234379 A JP17234379 A JP 17234379A JP 17234379 A JP17234379 A JP 17234379A JP S5695390 A JPS5695390 A JP S5695390A
Authority
JP
Japan
Prior art keywords
waste water
chromic acid
water containing
acid
active carbon
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
JP17234379A
Other languages
Japanese (ja)
Inventor
Seizaburo Kozasa
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP17234379A priority Critical patent/JPS5695390A/en
Publication of JPS5695390A publication Critical patent/JPS5695390A/en
Pending legal-status Critical Current

Links

Landscapes

  • Removal Of Specific Substances (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

PURPOSE: To treat waste water containing a chromic acid easily and economically by reducing the chromic acid to tervalent chromium by bringing the waste water into contact with active carbon in an acid atmosphere.
CONSTITUTION: Waste water cotaining a chromic acid of sexivalent chromium, such as CrO3 and CrO4 2-, of washing water after chrome plating is adjusted favorably to pH3 and less in an acid atmosphere and brought into contact with active carbon. Then, the chromic acid in the waste water is reduced to tervalent chromium. In this case, this active carbon, when used for this treatment continuously for a long period, is consumed only a little. Thus, the waste water containing the chromic acid can be treated easily and economically.
COPYRIGHT: (C)1981,JPO&Japio
JP17234379A 1979-12-28 1979-12-28 Treating method for waste water containing chromic acid Pending JPS5695390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17234379A JPS5695390A (en) 1979-12-28 1979-12-28 Treating method for waste water containing chromic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17234379A JPS5695390A (en) 1979-12-28 1979-12-28 Treating method for waste water containing chromic acid

Publications (1)

Publication Number Publication Date
JPS5695390A true JPS5695390A (en) 1981-08-01

Family

ID=15940141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17234379A Pending JPS5695390A (en) 1979-12-28 1979-12-28 Treating method for waste water containing chromic acid

Country Status (1)

Country Link
JP (1) JPS5695390A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102745847A (en) * 2012-06-29 2012-10-24 倪新军 Reusing device of high frequency circuit board electroplating wastewater chemical treatment water
CN102757145A (en) * 2012-06-29 2012-10-31 倪新军 Method for recycling chemical treating water of electroplating wastewater of high-frequency circuit board
CN103523962A (en) * 2013-10-13 2014-01-22 朱云霞 Recycling method of high-frequency circuit board electroplating wastewater chemical treatment water

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102745847A (en) * 2012-06-29 2012-10-24 倪新军 Reusing device of high frequency circuit board electroplating wastewater chemical treatment water
CN102757145A (en) * 2012-06-29 2012-10-31 倪新军 Method for recycling chemical treating water of electroplating wastewater of high-frequency circuit board
CN103523962A (en) * 2013-10-13 2014-01-22 朱云霞 Recycling method of high-frequency circuit board electroplating wastewater chemical treatment water

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