GB895742A - Apparatus for continuously detoxicating waste liquors containing soluble cyanides or free hydrocyanic acid - Google Patents

Apparatus for continuously detoxicating waste liquors containing soluble cyanides or free hydrocyanic acid

Info

Publication number
GB895742A
GB895742A GB11409/60A GB1140960A GB895742A GB 895742 A GB895742 A GB 895742A GB 11409/60 A GB11409/60 A GB 11409/60A GB 1140960 A GB1140960 A GB 1140960A GB 895742 A GB895742 A GB 895742A
Authority
GB
United Kingdom
Prior art keywords
vessel
liquor
chlorine
waste liquors
outlet
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
GB11409/60A
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 GB895742A publication Critical patent/GB895742A/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)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

895,742. Purifying waste liquids. DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT VORM ROESSLER. May 16, 1958 [May 25, 1957; July 17, 1957], No. 11409/60. Divided out of 895,740. Classes 46 and 111. An apparatus for continuously detoxicating waste liquors which contain soluble cyanides or free hydrocyanic acid by means of elementary chlorine or alkali or alkaline earth metal hypochlorites comprises a first vessel provided with an inlet and outlet for the liquor to be detoxicated, a device for the continuous potentiometric measurement of the content of cyanide ions in the liquor passing through the vessel, a controlled-feed device for gaseous chlorine or aqueous hypochlorite solution, and, if the waste liquors are not alkaline, a solution of an alkali, which device is actuated by the power impulse generated in the potentiometric measuring device so as to increase the supply of chlorine or hypochlorite when the cyanide content of the water rises and correspondingly reduce the supply thereof when the cyanide content decreases, and, connected to the outlet from the first vessel, a second vessel which is preferably longer than the first vessel and which is provided with an outlet. In a preferred embodiment the liquor enters a first vessel 2 which is so constructed by means of partitions that the liquor flows uniformly through. A measuring electrode 4 is connected to a switch 6 which regulates the opening of a valve 7 for the supply of chlorine 8 in calculated amounts. The detoxicated liquor enters a second larger vessel 9 which is provided with a measuring electrode 11, indicator 12 and a switch 13, connected to the measuring device, which closes a valve 14 when the indicator shows that there are cyanide ions in the liquor leaving the vessel 9, and simultaneously operates an acoustic or optical warning instrument 15. Specification 895,741 also is referred to.
GB11409/60A 1957-05-25 1958-05-16 Apparatus for continuously detoxicating waste liquors containing soluble cyanides or free hydrocyanic acid Expired GB895742A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB895742A true GB895742A (en) 1962-05-09

Family

ID=6847844

Family Applications (3)

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

Family Applications After (2)

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

Country Status (1)

Country Link
GB (3) GB895742A (en)

Cited By (3)

* 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
US3617567A (en) * 1969-05-15 1971-11-02 Du Pont Destruction of cyanide in aqueous solutions
US3715308A (en) * 1971-06-04 1973-02-06 Oxy Metal Finishing Corp Apparatus and process for treating toxic waste materials

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2193784B1 (en) * 1972-07-28 1974-10-25 Air Liquide
DE2553840C3 (en) * 1975-11-29 1981-01-29 Bayer Ag, 5090 Leverkusen Pressure hydrolytic treatment of waste water
DE3527589A1 (en) * 1985-08-01 1987-02-05 Prasse Juergen Process for operating industrial plants in which cyanide-containing waste waters are produced
ZA905224B (en) * 1989-07-05 1991-04-24 Minproc Tech Process for reducing the cyanide content of a solution

Cited By (3)

* 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
US3617567A (en) * 1969-05-15 1971-11-02 Du Pont Destruction of cyanide in aqueous solutions
US3715308A (en) * 1971-06-04 1973-02-06 Oxy Metal Finishing Corp Apparatus and process for treating toxic waste materials

Also Published As

Publication number Publication date
GB895740A (en) 1962-05-09
GB895741A (en) 1962-05-09

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