• 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:
    Mercury particles which are difficult to strip from sewage waters of industries employing mercury compounds, due to their extremely tiny size, can be coalesced into larger mercury drops by applying a strong magnetic field to the liquor which contains such tiny particles.
    公开号:SU738507A3
    申请号:SU772499306
    申请日:1977-07-01
    公开日:1980-05-30
    发明作者:Дженерини Джианни
    申请人:Аник С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to methods for the treatment of wastewater from mercury and can be used in the process of water purification of wastewater from chemical and other industrial branches containing mercury compounds. The known method of purification of wastewater from chlorine production from mercury, including oxidation with regulation of the pH of the solution, filtration, removal of the oxidizing agent and ion exchange C, This method is technologically difficult, durable and does not provide a high degree of mercury recovery from the wastewater. A known method of purification of wastewater from mercury by reducing it to a metal form and the subsequent separation of mercury-containing sludge 2. This method is closest to the described invention by its technical essence and the effect achieved. The disadvantage of this method. The degree of wastewater treatment is low. After 30 minutes of settling, the clarification of the solution contains 3.5 m Nd / l, and after 12 hours of dosing O, 9 mg Nd / l. The aim of the invention is to increase the degree of purification. The goal is achieved by the fact that the wastewater before the separation: mercury-containing sludge pass through Che, cutting the magnetic field. In this case, the intensity of the magnetic field is 6000-8000 Gs. As a result of the passage of wastewater containing mercury in metal form, a coalescence of mercury particles occurs through a magnetic field, accompanied by an increase in these particles in size, which contributes to a further increase in the degree of purification of wastewater from mercury. The use of the magnetic treatment stage will increase the degree of purification from mercury not only of water systems, but also of gaseous ones. Example. Wastewater from the catalytic compartments of acetic aldehyde production plants from acetylene, containing 5–25% mercury in the form of organic compounds, is acidified to pH 2 and subjected to the process of mercury reduction to the metallic form by the electrochemical method. In the recovery process, iron and carbon electrodes are used with a surface ratio of the anode to the cathode of 1: 1-2: 1. The drains are passed at a speed of 15 m / h in order to avoid the reaction between the iron electrode and the acid.
     The solution from the reduction stage is passed through a magnetic field with an intensity of 6000-8000 G and is fed for decantation by settling, in order to separate the mercury-containing sludge.
    After a 30-minute LT & T, the clarified solution contains yviO, 24 mg Nd / L, and when used. filtration less than 0.001 mg / Nd / l.
    With the indicators below and above the specified limits of the intensity of the magnetic field, the content of LD in the clarified water increases.
    权利要求:
    Claims (2)
    [1]
    1. The method of wastewater treatment from mercury by restoring it to
    metallic mercury followed by the separation of mercury-containing sludge, characterized in that, in order to increase the degree of purification, the wastewater is passed through a magnetic field before the mercury-containing sludge is separated.
    [2]
    2. A method according to claim 1, characterized in that the intensity of the magnetic field is 6000-8000 Gs.
    Sources of information taken into account in the examination
    1. Disposal of mercury from waste
    chlorine productions, informs chim, 1975, 144, 133-138, b, 8.
    2. Italy patent W 926615,
    . cl. C 02 C 5/00, 02.26.76 (prototype).
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE2729891B2|1979-11-29|
    ZA773525B|1978-04-26|
    AU2593977A|1978-12-14|
    AU510362B2|1980-06-19|
    NO145077B|1981-09-28|
    NL7706498A|1978-01-04|
    BE856388A|1978-01-02|
    FR2356448B1|1983-09-23|
    CA1087132A|1980-10-07|
    JPS535023A|1978-01-18|
    DK145416B|1982-11-15|
    NO145077C|1982-01-06|
    FR2356448A1|1978-01-27|
    DK290177A|1978-01-03|
    DE2729891C3|1980-08-07|
    IT1064085B|1985-02-18|
    US4170552A|1979-10-09|
    DD131181A5|1978-06-07|
    NO772322L|1978-01-03|
    GB1556587A|1979-11-28|
    SE429648B|1983-09-19|
    DE2729891A1|1978-01-05|
    SE7707640L|1978-01-03|
    DK145416C|1983-04-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7968063B2|2005-02-24|2011-06-28|Jgc Corporation|Mercury removal apparatus for liquid hydrocarbon|US3697420A|1968-03-19|1972-10-10|Donald Stapf Blaisdell|Method and apparatus for treatment of aqueous liquor|
    US3714037A|1971-01-27|1973-01-30|Crucible Inc|Flocculating apparatus and method|
    US3931007A|1972-12-19|1976-01-06|Nippon Electric Company Limited|Method of extracting heavy metals from industrial waste waters|
    JPS5120467A|1974-08-09|1976-02-18|Toyo Kasei Kogyo Co Ltd|Haiekichuno jukinzokujokyoho|JPS6214248A|1985-07-12|1987-01-22|Canon Inc|Dual port memory device|
    JPS6488602A|1987-09-29|1989-04-03|Matsushita Electric Ind Co Ltd|Method for originating data|
    JPH023164A|1988-06-16|1990-01-08|Sharp Corp|Dual port memory|
    US8043510B2|2009-10-29|2011-10-25|Conocophillips Company|Mercury removal with sorbents magnetically separable from treated fluids|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT24984/76A|IT1064085B|1976-07-02|1976-07-02|METHOD FOR THE THICKENING OF MERCURY PARTICLES|
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