JPS57127487A - Treatment of waste water containing cyan - Google Patents

Treatment of waste water containing cyan

Info

Publication number
JPS57127487A
JPS57127487A JP1213181A JP1213181A JPS57127487A JP S57127487 A JPS57127487 A JP S57127487A JP 1213181 A JP1213181 A JP 1213181A JP 1213181 A JP1213181 A JP 1213181A JP S57127487 A JPS57127487 A JP S57127487A
Authority
JP
Japan
Prior art keywords
waste water
naclo
oxidizing agent
complex
agent
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
JP1213181A
Other languages
Japanese (ja)
Other versions
JPS6018475B2 (en
Inventor
Mametaro Haida
Masahiro Nagai
Satoshi Ishitani
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1213181A priority Critical patent/JPS6018475B2/en
Publication of JPS57127487A publication Critical patent/JPS57127487A/en
Publication of JPS6018475B2 publication Critical patent/JPS6018475B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/18—Cyanides

Landscapes

  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

PURPOSE: To reduce the remaining amt. of CN- down to about 1/10 that in the prior art by adding an oxidizing agent to waste water contg. CN- then removing the excess oxidizing agent by reduction neutralization thence adding ferrous sulfate powder thereto and settling away the CN groups as insoluble complex.
CONSTITUTION: After factory waste water contg. CN- thickly is made alkaline, an oxizing agent (e.g.; NAClO) is added thereto and CN- is removed by the formulasIand II. Thereafter, the excess NAClO is once removed, and the pH of the liquid is made about 5, that is, slightly acidic. The above-described NaClO is neutralized away by adding a reducing agent (e.g.; Na2SO3). Next, FeSO4 is charged in the state of powder into the waste water having undergone the neutralization of the oxidizing agent to allow CN- to settle as iron cyano complex, that is, Fe4[Fe(CN)6]8, thence this settled complex is removed.
COPYRIGHT: (C)1982,JPO&Japio
JP1213181A 1981-01-28 1981-01-28 Treatment method for cyanide-containing plating solution wastewater Expired JPS6018475B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1213181A JPS6018475B2 (en) 1981-01-28 1981-01-28 Treatment method for cyanide-containing plating solution wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1213181A JPS6018475B2 (en) 1981-01-28 1981-01-28 Treatment method for cyanide-containing plating solution wastewater

Publications (2)

Publication Number Publication Date
JPS57127487A true JPS57127487A (en) 1982-08-07
JPS6018475B2 JPS6018475B2 (en) 1985-05-10

Family

ID=11796973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1213181A Expired JPS6018475B2 (en) 1981-01-28 1981-01-28 Treatment method for cyanide-containing plating solution wastewater

Country Status (1)

Country Link
JP (1) JPS6018475B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000069545A1 (en) * 1999-05-17 2000-11-23 Mitsubishi Heavy Industries, Ltd. Method for flue gas desulfurization and flue gas desulfurization system
JP2008036608A (en) * 2006-08-10 2008-02-21 Kurita Water Ind Ltd Method and apparatus for treating cyanide-containing wastewater
JP2009254959A (en) * 2008-04-15 2009-11-05 Sumitomo Heavy Industries Environment Co Ltd Method and apparatus for treating wastewater
JP2012157798A (en) * 2011-01-31 2012-08-23 Jfe Steel Corp Method for treating cyanide-containing wastewater
CN111470713A (en) * 2020-04-13 2020-07-31 江苏南大华兴环保科技股份公司 Method for treating cyanide-containing wastewater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000069545A1 (en) * 1999-05-17 2000-11-23 Mitsubishi Heavy Industries, Ltd. Method for flue gas desulfurization and flue gas desulfurization system
JP2008036608A (en) * 2006-08-10 2008-02-21 Kurita Water Ind Ltd Method and apparatus for treating cyanide-containing wastewater
JP2009254959A (en) * 2008-04-15 2009-11-05 Sumitomo Heavy Industries Environment Co Ltd Method and apparatus for treating wastewater
JP2012157798A (en) * 2011-01-31 2012-08-23 Jfe Steel Corp Method for treating cyanide-containing wastewater
CN111470713A (en) * 2020-04-13 2020-07-31 江苏南大华兴环保科技股份公司 Method for treating cyanide-containing wastewater

Also Published As

Publication number Publication date
JPS6018475B2 (en) 1985-05-10

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