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JPS5441270A - Treating method for waste water containing heavy metal ions - Google Patents

Treating method for waste water containing heavy metal ions

Info

Publication number
JPS5441270A
JPS5441270A JP10756677A JP10756677A JPS5441270A JP S5441270 A JPS5441270 A JP S5441270A JP 10756677 A JP10756677 A JP 10756677A JP 10756677 A JP10756677 A JP 10756677A JP S5441270 A JPS5441270 A JP S5441270A
Authority
JP
Japan
Prior art keywords
waste water
heavy metal
metal ions
water containing
divalent heavy
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
JP10756677A
Other languages
Japanese (ja)
Other versions
JPS6018476B2 (en
Inventor
Masaki Kondo
Terutaka Hirasawa
Nobuaki Nakajima
Takashi Watabe
Kohei Miki
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries 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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP10756677A priority Critical patent/JPS6018476B2/en
Publication of JPS5441270A publication Critical patent/JPS5441270A/en
Publication of JPS6018476B2 publication Critical patent/JPS6018476B2/en
Expired legal-status Critical Current

Links

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  • Removal Of Specific Substances (AREA)

Abstract

PURPOSE: To remove efficiently the divalent heavy metal ions using a small amount of Fe2+, by performing the addition of ferrous salt more than two times, when the treatment of ferrite making for the waste water containing the divalent heavy metal ions such as Zn2+, Cd2+, etc. is carried out.
CONSTITUTION: After a ferrous salt such as FeSO4, etc. has been added to the waste water containing the divalent heavy metal oins such as Zn2+, Cd2+, Mn2+, Cr2+, etc., pH of the waste water is regulated to 10W12 by adding NaOH. Then, by performing the aeration for about 90 minutes by blowing air into the above waste water, for example, at 60°C, the reaction expressed with the following formula is caused as to generate the precipitate of ferrite. M2++2Fe2++2O2→MO.Fe2O3 (where M2+ is a divalent heavy metal ion). Then, the addition of FeSO4, the pH control and the aeration is carried out in accordance with the ferrite making of the above first stage.
COPYRIGHT: (C)1979,JPO&Japio
JP10756677A 1977-09-07 1977-09-07 Treatment method for wastewater containing heavy metal ions Expired JPS6018476B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10756677A JPS6018476B2 (en) 1977-09-07 1977-09-07 Treatment method for wastewater containing heavy metal ions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10756677A JPS6018476B2 (en) 1977-09-07 1977-09-07 Treatment method for wastewater containing heavy metal ions

Publications (2)

Publication Number Publication Date
JPS5441270A true JPS5441270A (en) 1979-04-02
JPS6018476B2 JPS6018476B2 (en) 1985-05-10

Family

ID=14462407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10756677A Expired JPS6018476B2 (en) 1977-09-07 1977-09-07 Treatment method for wastewater containing heavy metal ions

Country Status (1)

Country Link
JP (1) JPS6018476B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5013453A (en) * 1983-03-21 1991-05-07 Union Oil Company Of California Method for removing heavy metals from aqueous solutions by coprecipitation
US5045214A (en) * 1983-03-21 1991-09-03 Union Oil Company Of California Methods for removing substances from aqueous solutions
US5529637A (en) * 1994-02-17 1996-06-25 Hydrochem Industrial Services, Inc. Formic-carboxylic acid mixtures for removing iron oxide sclae from steel surfaces

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5013453A (en) * 1983-03-21 1991-05-07 Union Oil Company Of California Method for removing heavy metals from aqueous solutions by coprecipitation
US5045214A (en) * 1983-03-21 1991-09-03 Union Oil Company Of California Methods for removing substances from aqueous solutions
US5529637A (en) * 1994-02-17 1996-06-25 Hydrochem Industrial Services, Inc. Formic-carboxylic acid mixtures for removing iron oxide sclae from steel surfaces
US5679170A (en) * 1994-02-17 1997-10-21 Hydrochem Industrial Services, Inc. Methods for removing iron oxide scale from interior surfaces of steel vessels using formic acid-citric acid mixtures

Also Published As

Publication number Publication date
JPS6018476B2 (en) 1985-05-10

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