GB895741A - Process for apparatus for the treatment of aqueous cyanide solutions - Google Patents

Process for apparatus for the treatment of aqueous cyanide solutions

Info

Publication number
GB895741A
GB895741A GB11408/60A GB1140860A GB895741A GB 895741 A GB895741 A GB 895741A GB 11408/60 A GB11408/60 A GB 11408/60A GB 1140860 A GB1140860 A GB 1140860A GB 895741 A GB895741 A GB 895741A
Authority
GB
United Kingdom
Prior art keywords
zone
chlorine
hypochlorite
continuously
controlled
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
GB11408/60A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB895741A publication Critical patent/GB895741A/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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Removal Of Specific Substances (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

895,741. Purifying waste liquors. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORM ROESSLER. May 16, 1958 [May 25, 1947; July 17, 1957], No. 11408/60. Divided out of 895,740. Classes 46 and 111. A process for continuously detoxicating waste liquors containing soluble cyanides or free hydrocyanic acid comprises passing the waste liquor through a 2-zone container, which zones are connected by an overflow in which is arranged a potentiometric device for continuously measuring CN-ion concentration, continuously adding to the first zone, by way of a controlled feed device actuated by the measuring device, sufficient chlorine or an alkali or alkaline earth metal hypochlorite solution to convert the cyanides or hydrocyanic acid to cyanates, and continuously adding to the second zone, by way of a second controlled feed device also actuated by the measuring device, sufficient chlorine or hypochlorite solution to convert the cyanate to nitrogen and carbon dioxide. The chlorine or hypochlorite may only be supplied to the second zone when the measurement of the cyanide ion concentration in the overflow exceeds a previously established maximum value. In a preferred apparatus the cyanide-containing liquid enters a first zone (A, a) and is treated with a controlled dose of chlorine or hypochlorite from a storage vessel D by means of a regulating device E, the quantity being determined by means of a measuring device C which is located inthe over flow between zones (A, a) and A, b). A calculated quantity of chlorine or hypochlorite may also be added to zone (A, b). Oxidation may be completed in vessel B which is fitted with deflecting plates F or agitators. Feeds may also be controlled by a double piston measuring pump. Specification 759,109 also is referred to.
GB11408/60A 1957-05-25 1958-05-16 Process for apparatus for the treatment of aqueous cyanide solutions Expired GB895741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE895740X 1957-05-25

Publications (1)

Publication Number Publication Date
GB895741A true GB895741A (en) 1962-05-09

Family

ID=6847844

Family Applications (3)

Application Number Title Priority Date Filing Date
GB11408/60A Expired GB895741A (en) 1957-05-25 1958-05-16 Process for apparatus for the treatment of aqueous cyanide solutions
GB15850/58A Expired GB895740A (en) 1957-05-25 1958-05-16 Process and apparatus for continuously detoxicating waste liquors
GB11409/60A Expired GB895742A (en) 1957-05-25 1958-05-16 Apparatus for continuously detoxicating waste liquors containing soluble cyanides or free hydrocyanic acid

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB15850/58A Expired GB895740A (en) 1957-05-25 1958-05-16 Process and apparatus for continuously detoxicating waste liquors
GB11409/60A Expired GB895742A (en) 1957-05-25 1958-05-16 Apparatus for continuously detoxicating waste liquors containing soluble cyanides or free hydrocyanic acid

Country Status (1)

Country Link
GB (3) GB895741A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715308A (en) * 1971-06-04 1973-02-06 Oxy Metal Finishing Corp Apparatus and process for treating toxic waste materials
FR2193784A1 (en) * 1972-07-28 1974-02-22 Air Liquide
US4246104A (en) * 1975-11-29 1981-01-20 Bayer Aktiengesellschaft Pressure-hydrolytic treatment of effluent
DE3527589A1 (en) * 1985-08-01 1987-02-05 Prasse Juergen Process for operating industrial plants in which cyanide-containing waste waters are produced
WO1991000248A1 (en) * 1989-07-05 1991-01-10 Minproc Technology Pty. Limited Process for reducing the cyanide content of a solution

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1301280B (en) * 1963-07-09 1969-08-14 Abend Process to increase safety in the continuous treatment of cyanide waste water
DE1523018A1 (en) * 1964-10-08 1969-04-24 Siemens Ag Measuring device for the automatic measurement of the cyanide content and / or the pH value of industrial waste water
US3391789A (en) * 1965-06-11 1968-07-09 Industrial Filter Pump Mfg Co Waste treatment apparatus
US3531405A (en) * 1968-04-03 1970-09-29 Industrial Filter Pump Mfg Co Method and apparatus for treating waste
US3617567A (en) * 1969-05-15 1971-11-02 Du Pont Destruction of cyanide in aqueous solutions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715308A (en) * 1971-06-04 1973-02-06 Oxy Metal Finishing Corp Apparatus and process for treating toxic waste materials
FR2193784A1 (en) * 1972-07-28 1974-02-22 Air Liquide
US4246104A (en) * 1975-11-29 1981-01-20 Bayer Aktiengesellschaft Pressure-hydrolytic treatment of effluent
DE3527589A1 (en) * 1985-08-01 1987-02-05 Prasse Juergen Process for operating industrial plants in which cyanide-containing waste waters are produced
WO1991000248A1 (en) * 1989-07-05 1991-01-10 Minproc Technology Pty. Limited Process for reducing the cyanide content of a solution
US5120451A (en) * 1989-07-05 1992-06-09 Minproc Technology Pty. Limited Process for reducing the cyanide content of a solution

Also Published As

Publication number Publication date
GB895740A (en) 1962-05-09
GB895742A (en) 1962-05-09

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