Mixed bed exchange resin system and method of preparation
    1.
    发明授权
    Mixed bed exchange resin system and method of preparation 失效
    混合床交换树脂体系及其制备方法

    公开(公告)号:US5902833A

    公开(公告)日:1999-05-11

    申请号:US962855

    申请日:1997-11-03

    Inventor: Shintaro Tasaki

    CPC classification number: B01J39/043 B01J41/043 B01J41/14 B01J47/04

    Abstract: A method for preparing non-agglomerating mixed bed ion exchange resin systems without affecting the ion exchange kinetics of the anion exchange resin component of the mixed bed system is disclosed. Pretreatment of the anion exchange resin component with a sulfonated poly(vinylaromatic) polyelectrolyte is particularly effective in providing non-agglomerated mixed bed systems without affecting ion exchange kinetics. Treatment levels of 10 to 800 milligrams per liter of anion exchange resin with sulfonated poly(vinylaromatic) polyelectrolyte having number average molecular weight from 5,000 to 1,000,000 are particularly preferred.

    Abstract translation: 公开了一种在不影响混床系统的阴离子交换树脂组分的离子交换动力学的情况下制备非附聚混合床离子交换树脂体系的方法。 用磺化聚(乙烯基芳族)聚电解质预处理阴离子交换树脂组分对于提供非聚集的混合床体系而不影响离子交换动力学是特别有效的。 具有数均分子量为5,000至1,000,000的具有磺化聚(乙烯基芳族)聚电解质的每升阴离子交换树脂10至800毫克的处理水平是特别优选的。

    Process for demineralizing a liquid containing organic matter and salts
in solution
    2.
    发明授权
    Process for demineralizing a liquid containing organic matter and salts in solution 失效
    使含有机物的液体和溶液中的盐脱矿质的方法

    公开(公告)号:US5851372A

    公开(公告)日:1998-12-22

    申请号:US732216

    申请日:1996-10-24

    Applicant: Roland Noel

    Inventor: Roland Noel

    Abstract: A process of demineralizing a liquid containing organic matter and inorganic salts in solution, in which the treatment of the liquid comprises the following steps: the liquid is percolated over a strong cationic ion exchange resin for monovalent ions; both a batch of liquid from the preceding step and a brine for receiving ions from that liquid are caused to circulate in loops through at least one "two-compartment" electrodialyzer comprising a plurality of anionic membranes interposed between a plurality of cationic membranes; and the brine whose salt concentration lies in the range 90 grams per liter (g/l) to 110 g/l is used to regenerate the ion exchange resin.

    Abstract translation: PCT No.PCT / FR95 / 00595 Sec。 371日期:1996年10月24日 102(e)日期1996年10月24日PCT提交1995年5月9日PCT公布。 WO95 / 30482 PCT出版物 日期:1995年11月16日一种将含有机物的液体和溶液中的无机盐脱矿质的方法,其中处理液体包括以下步骤:将液体渗透在强阳离子交换树脂上用于一价离子; 使来自前述步骤的一批液体和用于从该液体接收离子的盐水通过至少一个“两室”电渗析器循环循环,所述“双室”电渗析器包括插入在多个阳离子膜之间的多个阴离子膜; 并且使用盐浓度在90克/升(g / l)至110g / l范围内的盐水来再生离子交换树脂。

    Process employing thermally sterilizable aqueous polishing agents
    3.
    发明授权
    Process employing thermally sterilizable aqueous polishing agents 失效
    使用可热灭菌的水性抛光剂的方法

    公开(公告)号:US5518626A

    公开(公告)日:1996-05-21

    申请号:US173634

    申请日:1993-12-23

    CPC classification number: B01J49/0078 B01J39/043 B01J47/06 B01J49/0056

    Abstract: The present invention provides a system and a process for removing contaminants such as CO.sub.2 and mobile cations and anions from aqueous solutions. The system and the process contemplate the use of thermally sterilizable aqueous polishing agents such as thermally sterilizable ion exchange resins and as a result, the need for chemical and/or mechanical microbial control or inhibition techniques is obviated. Therefore, the present invention will be especially useful in submarine and spacecraft applications where the need exists for reduced weight and volume water processing systems.

    Abstract translation: 本发明提供一种用于从水溶液中去除污染物如CO 2和可移动阳离子和阴离子的系统和方法。 该系统和方法考虑使用可热灭菌的水性抛光剂如热灭菌的离子交换树脂,结果是免除了对化学和/或机械微生物控制或抑制技术的需要。 因此,本发明对于需要减轻重量和体积的水处理系统的潜艇和航天器应用尤其有用。

    Hot lime precipitation of arsenic from wastewater or groundwater
    4.
    发明授权
    Hot lime precipitation of arsenic from wastewater or groundwater 失效
    来自废水或地下水的砷酸的高温酸沉淀

    公开(公告)号:US5378366A

    公开(公告)日:1995-01-03

    申请号:US052025

    申请日:1993-04-22

    Abstract: A process is disclosed wherein arsenic dissolved in wastewater or groundwater is removed from solution by precipitation thereof as calcium arsenate formed by the reaction of the arsenic with lime or hydrated lime in a heated solution at a pH of about 11 to about 13. It is preferred that the arsenic is first converted by oxidation to its pentavalent form.

    Abstract translation: 公开了一种方法,其中将溶解在废水或地下水中的砷通过其沉淀作为砷酸钙而从溶液中除去,所述砷酸钙是通过砷与石灰或熟石灰在pH为约11至约13的加热溶液中反应形成的。 砷首先通过氧化转化成其五价形式。

    Method for recovery of a metal ion from electroless plating solutions
    6.
    发明授权
    Method for recovery of a metal ion from electroless plating solutions 失效
    从化学镀溶液中回收金属离子的方法

    公开(公告)号:US5108615A

    公开(公告)日:1992-04-28

    申请号:US442744

    申请日:1989-11-28

    CPC classification number: B01J45/00 B01J39/043 C23C18/1617 Y10S423/14

    Abstract: A new process for removal of a metal ion from an anionic complex, including a first chelating agent and a metal ion, such as copper, nickel or cobalt ion, in electroless plating bath rinse streams utilizes a cation exchange resin to extract the metal ion from the rinse stream after the metal ion has been removed from the anionic complex and complexed with a second chelating agent.In another embodiment, a competing chelating agent is not added to the electroless plating bath waste stream, but rather, another metal ion (B), which has a higher affinity for the chelating agent than the metal ion (A) of interest and which is nontoxic, is added to the waste stream. Metal ion B is selected so that under predetermined conditions, metal ion B forms a stronger complex with the chelating agent than does metal ion A. Also, the complex of the chelating agent and nontoxic metal ion B is anionic. A cation exchange resin is used to extract metal ion A from the treated waste stream.

    Abstract translation: 在化学镀浴冲洗流中,从阴离子配合物(包括第一螯合剂和金属离子)如铜,镍或钴离子中去除金属离子的新方法利用阳离子交换树脂从 金属离子从阴离子络合物中除去并与第二螯合剂络合后的漂洗流。 在另一个实施方案中,竞争性螯合剂不被添加到化学镀浴废料流中,而是加入对螯合剂具有比感兴趣的金属离子(A)更高的亲和性的另一种金属离子(B) 无毒,被添加到废物流中。 选择金属离子B,使得在预定条件下,金属离子B与金属离子A形成比螯合剂更强的络合物。此外,螯合剂和无毒金属离子B的络合物是阴离子的。 使用阳离子交换树脂从经处理的废物流中提取金属离​​子A.

    Method for the recycle treatment of waste water from chromium plating
    10.
    发明授权
    Method for the recycle treatment of waste water from chromium plating 失效
    从镀铬处理废水的方法

    公开(公告)号:US4012318A

    公开(公告)日:1977-03-15

    申请号:US563729

    申请日:1975-03-31

    Applicant: Toshio Hayashi

    Inventor: Toshio Hayashi

    Abstract: A method for the recycle treatment of chromium plating waste water, in the process of treating chromium plating waste water obtained by washing the chromium plated products with ion exchange resins, wherein, for the purposes of improving the rate of recovery of chromic acid, of extending the life of the ion exchange resins, and of preventing the formation of sludge, the chromium plating waste water is adjusted almost to neutrality by the addition of an alkaline substance so as to precipitate the metal components contained therein in the form of hydroxides, which are then removed by filtration; the filtrate so obtained is kept neutral during the subsequent treatment for the removal of alkaline components by adsorption in a pretreatment tower packed with cation exchange resins; the dilute dichromic acid solution so obtained is similarly treated for concentration in an adsorption tower packed with anion exchange resins and a purification tower packed with cation exchange resins so as to recover pure dichromic acid solution, whereas the above pretreatment tower and purification tower are regenerated by treatment with sulfuric acid.

    Abstract translation: 在用离子交换树脂洗涤镀铬产品得到的镀铬废水的处理过程中,对镀铬废水进行再循环处理的方法,其中为了提高铬酸的回收率,延伸 离子交换树脂的寿命,并且防止污泥形成,通过添加碱性物质将镀铬废水几乎调节为中性,以使氢氧化物的形式沉淀其中所含的金属组分,其为 然后通过过滤除去; 所得到的滤液在随后的处理中保持中性,通过在填充有阳离子交换树脂的预处理塔中吸附除去碱性组分; 将如此获得的稀二重铬酸溶液类似地处理在装有阴离子交换树脂的吸附塔和填充有阳离子交换树脂的净化塔中的浓度,以回收纯二重铬酸溶液,而上述预处理塔和净化塔由 用硫酸处理。

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