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JPS5573392A - Removing of dithionate ion from waste water - Google Patents

Removing of dithionate ion from waste water

Info

Publication number
JPS5573392A
JPS5573392A JP14715178A JP14715178A JPS5573392A JP S5573392 A JPS5573392 A JP S5573392A JP 14715178 A JP14715178 A JP 14715178A JP 14715178 A JP14715178 A JP 14715178A JP S5573392 A JPS5573392 A JP S5573392A
Authority
JP
Japan
Prior art keywords
dithionate
ions
waste water
contacted
transition metal
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
JP14715178A
Other languages
Japanese (ja)
Inventor
Teruo Kumagai
Toshikatsu Mori
Shinpei Matsuda
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.)
Hitachi Ltd
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
Hitachi 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 Babcock Hitachi KK, Hitachi Ltd filed Critical Babcock Hitachi KK
Priority to JP14715178A priority Critical patent/JPS5573392A/en
Publication of JPS5573392A publication Critical patent/JPS5573392A/en
Pending legal-status Critical Current

Links

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  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

PURPOSE: To efficiently and economically oxidize dithionate ions to sulfate ions by a method wherein dithionate ion-containing waste water, while being heated under pressure, is contacted with oxygen gas in the presence of specific amount of transition metal catalyst.
CONSTITUTION: Dithionate-containing waste water from a smoke desulfurization plant, or the like, is added with at least one of transition metal ions such as iron and nickel in amount of about 50W1000ppm as catalyst. The water is then contacted with oxygen-containing gas under a pressure of about 0.5W10kg/cm2 and at a temperature over 100°C. This allows dithionate ions to be oxidized into sulfate ions. In this manner, dithionate ions are effectively and economically removed, thereby reducing COD in waste water.
COPYRIGHT: (C)1980,JPO&Japio
JP14715178A 1978-11-30 1978-11-30 Removing of dithionate ion from waste water Pending JPS5573392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14715178A JPS5573392A (en) 1978-11-30 1978-11-30 Removing of dithionate ion from waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14715178A JPS5573392A (en) 1978-11-30 1978-11-30 Removing of dithionate ion from waste water

Publications (1)

Publication Number Publication Date
JPS5573392A true JPS5573392A (en) 1980-06-03

Family

ID=15423732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14715178A Pending JPS5573392A (en) 1978-11-30 1978-11-30 Removing of dithionate ion from waste water

Country Status (1)

Country Link
JP (1) JPS5573392A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793993A1 (en) * 1996-03-08 1997-09-10 Kurita Water Industries Ltd. Process for treating waste water of flue gas desulfurization

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793993A1 (en) * 1996-03-08 1997-09-10 Kurita Water Industries Ltd. Process for treating waste water of flue gas desulfurization
CN1114463C (en) * 1996-03-08 2003-07-16 栗田工业株式会社 Process for treating waste water of flue gas desulfurization

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