JPS5624092A - Anti-polluting treatment of electrolysis waste water - Google Patents

Anti-polluting treatment of electrolysis waste water

Info

Publication number
JPS5624092A
JPS5624092A JP9935179A JP9935179A JPS5624092A JP S5624092 A JPS5624092 A JP S5624092A JP 9935179 A JP9935179 A JP 9935179A JP 9935179 A JP9935179 A JP 9935179A JP S5624092 A JPS5624092 A JP S5624092A
Authority
JP
Japan
Prior art keywords
waste water
trivalent
hexavalent
sulfite
electrolyte
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
JP9935179A
Other languages
Japanese (ja)
Other versions
JPS5810159B2 (en
Inventor
Hideo Yamamoto
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP9935179A priority Critical patent/JPS5810159B2/en
Publication of JPS5624092A publication Critical patent/JPS5624092A/en
Publication of JPS5810159B2 publication Critical patent/JPS5810159B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Physical Water Treatments (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

PURPOSE: To make hexavalent Cr harmless by reducing it to trivalent Cr for making its throw-away easier, by a procedure in which a sulfite of Na or K is added to an industrial waste water containing hexavalent Cr to cause a photo-reductive reaction to take place under an atmospheric light condition in the open air.
CONSTITUTION: An electrolyte or an electrolysis waste water composed of the electrolyte and electrolytic sludge, containing hexavalent Cr, is mixed with 10W50g/ liter of a sulfite, e.g., Na2SO3 or K2SO3, and then the mixture is put into a transparent acrylate container impervious to ultraviolet rays or a transparent glass container and then exposed to the sunshine in the open air or allowed to stand for 1W5 days under a light environment similar to the outdoor, e.g., an airtificial sunshine device. Thus, the sulfite ion is excited by light to reduce hexavalent Cr to harmless trivalent Cr due to its strong reductive action, whereby causing the trivalent Cr to sediment in the form of Cr(OH)3.
COPYRIGHT: (C)1981,JPO&Japio
JP9935179A 1979-08-03 1979-08-03 Method for detoxifying electrolytic waste liquid, etc. Expired JPS5810159B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9935179A JPS5810159B2 (en) 1979-08-03 1979-08-03 Method for detoxifying electrolytic waste liquid, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9935179A JPS5810159B2 (en) 1979-08-03 1979-08-03 Method for detoxifying electrolytic waste liquid, etc.

Publications (2)

Publication Number Publication Date
JPS5624092A true JPS5624092A (en) 1981-03-07
JPS5810159B2 JPS5810159B2 (en) 1983-02-24

Family

ID=14245182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9935179A Expired JPS5810159B2 (en) 1979-08-03 1979-08-03 Method for detoxifying electrolytic waste liquid, etc.

Country Status (1)

Country Link
JP (1) JPS5810159B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965573A (en) * 1982-10-06 1984-04-13 Mazda Motor Corp Igniter of engine
JPS5968567A (en) * 1982-10-13 1984-04-18 Mazda Motor Corp Ignition device of engine
CN114620874A (en) * 2022-05-16 2022-06-14 北京北方宏拓环境科技有限公司 Method for recovering hexavalent chromium in wastewater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965573A (en) * 1982-10-06 1984-04-13 Mazda Motor Corp Igniter of engine
JPH0351906B2 (en) * 1982-10-06 1991-08-08 Mazda Motor
JPS5968567A (en) * 1982-10-13 1984-04-18 Mazda Motor Corp Ignition device of engine
JPH0351907B2 (en) * 1982-10-13 1991-08-08 Mazda Motor
CN114620874A (en) * 2022-05-16 2022-06-14 北京北方宏拓环境科技有限公司 Method for recovering hexavalent chromium in wastewater

Also Published As

Publication number Publication date
JPS5810159B2 (en) 1983-02-24

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