GB1433858A - Neutralisation of cyanide residues - Google Patents

Neutralisation of cyanide residues

Info

Publication number
GB1433858A
GB1433858A GB2044074A GB2044074A GB1433858A GB 1433858 A GB1433858 A GB 1433858A GB 2044074 A GB2044074 A GB 2044074A GB 2044074 A GB2044074 A GB 2044074A GB 1433858 A GB1433858 A GB 1433858A
Authority
GB
United Kingdom
Prior art keywords
liquid
regions
cyanide
neutralisation
electrolysis
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.)
Expired
Application number
GB2044074A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2044074A priority Critical patent/GB1433858A/en
Publication of GB1433858A publication Critical patent/GB1433858A/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

1433858 Electrolytically oxidizing cyanide STANDARD TELEPHONES & CABLES Ltd 9 May 1974 20440/74 Heading C7B Cyanide waste in an aqueous wash liquid is oxidized with electrolytically generated OCl<SP>-</SP> by passing the liquid, containing Cl<SP>-</SP>, through one or more electrolysis regions in each of which an OClconcentration of 750-850 ppm is maintained, e.g. by means of a redox electrode. The Cl<SP>-</SP> may be added as the Na, K, NH 4 or Ca salt and the pH may be monitored and controlled to pH 10-11 using the redox electrodes. The liquid may be continuously recirculated via washing regions (e.g. forming part of a plating process), the electrolysis regions and a buffer tank, with liquid and/or Cl<SP>-</SP> additions as required.
GB2044074A 1974-05-09 1974-05-09 Neutralisation of cyanide residues Expired GB1433858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2044074A GB1433858A (en) 1974-05-09 1974-05-09 Neutralisation of cyanide residues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2044074A GB1433858A (en) 1974-05-09 1974-05-09 Neutralisation of cyanide residues

Publications (1)

Publication Number Publication Date
GB1433858A true GB1433858A (en) 1976-04-28

Family

ID=10145992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2044074A Expired GB1433858A (en) 1974-05-09 1974-05-09 Neutralisation of cyanide residues

Country Status (1)

Country Link
GB (1) GB1433858A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241960A (en) * 1990-03-15 1991-09-18 Xinyu Yang Electrolytic treatment of cyanide-containing liquid waste and treatment of by-product gas
US5288373A (en) * 1990-03-15 1994-02-22 Xinyu Yang Process of removing cyanide from waste water
FR2718731A1 (en) * 1994-04-19 1995-10-20 Emc Services Treatment of an effluent containing anionic oxidizable species, in particular a cyanide effluent, by chemical oxidation and electrolysis.
CN105174566A (en) * 2015-10-30 2015-12-23 太仓东能环保设备有限公司 Cyanogen-containing electroplating wastewater treatment process
CN106122769A (en) * 2016-07-13 2016-11-16 河南神马氯碱发展有限责任公司 A kind of can prevent liquid chlorine pour in down a chimney into pumped vacuum systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241960A (en) * 1990-03-15 1991-09-18 Xinyu Yang Electrolytic treatment of cyanide-containing liquid waste and treatment of by-product gas
US5288373A (en) * 1990-03-15 1994-02-22 Xinyu Yang Process of removing cyanide from waste water
GB2241960B (en) * 1990-03-15 1994-08-03 Xinyu Yang Decyanation process
FR2718731A1 (en) * 1994-04-19 1995-10-20 Emc Services Treatment of an effluent containing anionic oxidizable species, in particular a cyanide effluent, by chemical oxidation and electrolysis.
WO1995028358A1 (en) * 1994-04-19 1995-10-26 Emc Services Destroying metal cyanide complexes by combined chemical oxidation and electrolysis
CN105174566A (en) * 2015-10-30 2015-12-23 太仓东能环保设备有限公司 Cyanogen-containing electroplating wastewater treatment process
CN106122769A (en) * 2016-07-13 2016-11-16 河南神马氯碱发展有限责任公司 A kind of can prevent liquid chlorine pour in down a chimney into pumped vacuum systems
CN106122769B (en) * 2016-07-13 2018-06-29 河南神马氯碱发展有限责任公司 It is a kind of can prevent liquid chlorine pour in down a chimney into pumped vacuum systems

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee