• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method for treating a waste water containing cyanide ions, which comprises (1) adding a ferrous salt to the waste water to convert the cyanide ions in it to a precipitate of ferrous ferrocyanide and insoluble Turnbull's blue, (2) adding an alkali agent to the waste water to convert the remaining ferrous ion to Fe(OH)2, and (3) adding a ferric salt to this waste water to precipitate ¢Fe(CN)6!4- formed by addition of the alkali agent as insoluble Berlin blue. The method permits a very efficient removal of the cyanide ions from the cyanide ion-containing waste water. It is particularly suitable for the treatment of gas liquor which has been discharged from the step of quenching coke oven gas and treated with activated carbon and activated sludge.
    公开号:SU828960A3
    申请号:SU772550053
    申请日:1977-11-30
    公开日:1981-05-07
    发明作者:Ивазе Тосио；Хасимото Теруо；Сибуя Юкихико；Харада Хироси；Игути Еуко
    申请人:Ниигата Инджиниринг Ко,Лтд (Фирма)；
    IPC主号:
    专利说明:

    additional stage of processing pa anneobmepnoy resin.
    F o r p l1 of the invention
    The method of purification of cyanide containing iodine, including the introduction of iron salts, followed by the separation of cyanide iron compounds, and with the fact that, in order to improve the degree of purification of the second process, in the wastewater
    solutions of ferric chloride, sodium hydroxide and ferric chloride are introduced in succession, and cyanide compounds of iron are separated by settling.
    Sources of information taken into account with expert.
    1. Japanese Patent 49-18943, C. 02C 5/00, 14.05.74.
    2. The US patent. No. 3788983, cl. C 02 C 5/02, 01/29/74 (prototics).
    权利要求:
    Claims (1)
    [1]
    Claim
    The method of purification of cyanide-containing waste iodine, including the introduction of iron salts, followed by separation of the cyanide compounds of iron, is distinguished by the fact that, p. In order to increase the degree of purification and simplify the process, solutions of ferric chloride, sodium hydroxide and ferric chloride are successively introduced into wastewater, and the cyanide compounds of iron are separated by settling.
    类似技术:
    公开号 | 公开日 | 专利标题
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    CN107857426B|2020-05-22|Comprehensive treatment method for phosphorus-containing wastewater
    FR2394497A1|1979-01-12|PROCESS FOR THE TREATMENT OF WASTEWATER CONTAINING PHENOL, PHENOL OR PHENOL DERIVATIVES AND FORMALDEHYDE
    SU828960A3|1981-05-07|Method of purifying cyanide-containing waste water
    JP2007260586A|2007-10-11|Treatment method of waste water generated in coke oven
    US4543189A|1985-09-24|Removal of complexed zinc-cyanide from wastewater
    US3847807A|1974-11-12|Removal of cyanide and color bodies from coke plant wastewater
    JPH0994600A|1997-04-08|Treatment of phosphorus-containing sewage
    SU881005A1|1981-11-15|Method of galvanic waste purification
    SU704912A1|1979-12-25|Method of waste water purification from chromium
    SU710980A1|1980-01-25|Method of purifying waste from | hexacyanoferrates
    RU2061660C1|1996-06-10|Method for treatment of sewage water to remove ions of heavy metals
    RU2068396C1|1996-10-27|Method of intense sewage treatment from chrome |
    SU1135134A1|1988-03-07|Method of cleaning waste water of cyanides
    KR100345296B1|2002-11-18|Treatment method of waste water containing hexavalent chromium compound_
    SU1215307A1|1988-02-28|Method of cleaning waste water of cyanides
    RU2064898C1|1996-08-10|Method of sewage purification from mercury compounds
    SU552294A1|1977-03-30|Mercury recovery method
    SU812341A1|1981-03-15|Method of regeneration of activated carbon
    SU245672A1|1977-04-05|The method of wastewater treatment sulfate cellulose production
    SU1057434A1|1983-11-30|Method for purifying effluents method for purifying effluents from ions of hexavalent chromium
    SU814886A1|1981-03-23|Method of galvanic industry waste water purification
    SU1148836A1|1985-04-07|Method of removing sexivalent chromium from waste water
    RU1834856C|1993-08-15|Method for purification of sewage water containing ions of ammonium and copper
    同族专利:
    公开号 | 公开日
    DE2753401C2|1982-11-25|
    FR2383888A1|1978-10-13|
    FR2383888B1|1982-04-30|
    DE2753401A1|1978-09-21|
    CA1089573A|1980-11-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5893408A|1995-08-04|1999-04-13|Nautica Dehumidifiers, Inc.|Regenerative heat exchanger for dehumidification and air conditioning with variable airflow|
    MD4139C1|2010-06-28|2012-07-31|Государственный Университет Молд0|Process for neutralization of waste obtained from wine demetallization with potassium hexacyanoferrate |DE1286463B|1963-04-24|1969-01-02|Bucksteeg|Process for the detoxification of wastewater containing cyanide|
    CH545254A|1972-09-27|1973-12-15|Ciba Geigy Ag|Process for purifying waste water|
    ZA737730B|1972-10-26|1974-09-25|St Regis Paper Co|Process for reducing the organic carbon content and improving the color of aqueous plant effluents|US4211646A|1977-10-31|1980-07-08|Texaco Inc.|Waste water process|
    US4312760A|1980-02-19|1982-01-26|Neville Roy G|Method for the removal of free and complex cyanides from water|
    FR2854088B1|2003-04-23|2006-09-29|Inertec|METHOD FOR FIXING CYANIDES IN SOLID WASTE OR IN WATER|
    CN105399261B|2015-12-12|2018-02-13|李运华|A kind of processing method of low concentration electroplating cyanic waste water|
    CN112863611B|2021-01-14|2022-03-08|山东黄金矿业科技有限公司选冶实验室分公司|Method for determining iron salt dosage extreme value in cyanide-containing wastewater treatment by iron salt precipitation method|
    CN113908799B|2021-12-14|2022-03-08|山东省科学院生态研究所|Preparation method and application of magnetic Prussian blue nano clay|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP3073877A|JPS5627118B2|1977-03-19|1977-03-19|
    JP3863677A|JPS5651835B2|1977-04-05|1977-04-05|
    JP10141577A|JPS5627119B2|1977-08-24|1977-08-24|
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