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    Method for removing and recovering nutrients from wastewater
    81.
    发明授权
    Method for removing and recovering nutrients from wastewater 失效
    从废水中去除和回收营养物质的方法

    公开(公告)号：US4477355A

    公开(公告)日：1984-10-16

    申请号：US480526

    申请日：1983-03-30

    Applicant: Lorenzo Liberti ,  Gianfranco Boari ,  Roberto Passino

    Inventor： Lorenzo Liberti ,  Gianfranco Boari ,  Roberto Passino

    IPC: B01J39/00 ,  B01J49/00 ,  C02F1/42

    CPC classification number: B01J49/0017 ,  B01J39/00 ,  Y10S210/906

    Abstract: A method for removing and recovering ammonium and/or potassium and/or phosphate ions from wastewater is presented which comprises:permitting said wastewater to pass through at least one bed of ion-exchange resins capable of removing selectively those nutrient ionsregenerating those ion-exchange resins with a Na Cl solution or other suitable regenerant solutions so that said nutrient ions may be obtained in a much more concentrated formadding to said regeneration eluates (or, eventually, directly to wastewater) at least one Mg salt, in proper pH conditions so as to precipitate hydrous MgNH.sub.4 PO.sub.4 and/or MgKPO.sub.4, slightly soluble salts of great agronomic value.

    Abstract translation: 提出了一种从废水中除去和回收铵和/或钾和/或磷酸根离子的方法，其包括：允许所述废水通过至少一个离子交换树脂床，该离子交换树脂能够选择性地除去再生这些离子交换的那些营养离子 树脂与NaCl溶液或其他合适的再生剂溶液，使得所述营养离子可以以更加浓缩的形式获得，在合适的pH条件下，将所述再生洗脱物（或最终直接转化为废水）添加至少一种Mg盐，从而 为了沉淀含水MgNH4PO4和/或MgKPO4，具有很大农学价值的微溶盐。

    Counter-current adsorption filters for the treatment of liquids and a method of operating the filter
    82.
    发明授权
    Counter-current adsorption filters for the treatment of liquids and a method of operating the filter 失效
    用于处理液体的逆流吸附过滤器和操作过滤器的方法

    公开(公告)号：US4400278A

    公开(公告)日：1983-08-23

    申请号：US309614

    申请日：1981-10-01

    Applicant: Friedrich Martinola

    Inventor： Friedrich Martinola

    IPC: B01D15/00 ,  B01J39/00 ,  B01J41/04 ,  B01J47/02 ,  B01J47/026 ,  B01J49/00 ,  B01J49/08 ,  C02F1/42 ,  C13B20/14

    CPC classification number: B01J49/0017 ,  B01J39/00 ,  B01J47/026

    Abstract: The invention concerns a counter-current adsorption filter for the treatment of liquids, with different adsorbents which require different regenerating agents, in which loading of the different adsorbents is effected in a stream of liquid flowing upwards and regeneration of the different loaded adsorbents with the different regenerating agents is effected in a stream of liquid flowing downwards, the inside of which filter is subdivided, by horizontal devices which are permeable to liquid, into a number of chambers corresponding to the number of different adsorbents to be used; in which the adsorbents which are regenerated with different regenerating agents are present in adjacent chambers; the chambers--with the exception of the topmost chamber of the filter--are equipped with a liquid drainage system which is located below the device which is permeable to liquid and forms the upper boundary of the chamber, and which is embedded in a layer of inert material; and in which the individual chambers are filled with a certain amount of adsorbent. The invention furthermore concerns a process for the operation of this letter.

    Abstract translation: 本发明涉及一种用于处理液体的逆流吸附过滤器，其中不同的吸附剂需要不同的再生剂，其中在向上流动的液体流中实现不同吸附剂的加载，并且用不同的再生剂再生不同的负载吸附剂 再生剂在向下流动的液体流中实现，其过滤器的内部通过液体可渗透的水平装置被细分成与要使用的不同吸附剂的数量相对应的多个室; 其中用不同再生剂再生的吸附剂存在于相邻的室中; 除了过滤器的最上面的腔室之外，腔室配备有液体排出系统，该排液系统位于装置的下方，其可透过液体并形成腔室的上边界，并且嵌入在惰性层中 材料; 并且其中各个室中填充有一定量的吸附剂。 本发明还涉及这个信的操作过程。

    System and method for removing ammonia from wastewater
    83.
    发明授权
    System and method for removing ammonia from wastewater 失效
    从废水中去除氨的系统和方法

    公开(公告)号：US4370234A

    公开(公告)日：1983-01-25

    申请号：US231833

    申请日：1981-02-05

    Applicant: William P. Marsland

    Inventor： William P. Marsland

    IPC: B01J39/00 ,  B01J49/00 ,  C02F3/06 ,  C02F1/42 ,  C02F3/08

    CPC classification number: B01J49/0065 ,  B01J39/00 ,  C02F3/06 ,  Y02W10/15 ,  Y10S210/903

    Abstract: A method and apparatus for treating wastewater containing ammonia by passing the wastewater over a bed of ion exchange particles capable of exchanging ammonium and having a growth of nitrifying bacteria thereon. The wastewater is preferably first oxygenated and then passed through a biological filter, a solids filter, and an organic filter before reaching the ion exchange particles.

    Abstract translation: 将废水通过能够交换铵并在其上生长硝化细菌的离子交换颗粒床处理废水的方法和装置。 废水优选首先被氧化，然后在到达离子交换颗粒之前通过生物过滤器，固体过滤器和有机过滤器。

    Process for continuously operating chromating solutions
    89.
    发明授权
    Process for continuously operating chromating solutions 失效
    连续操作铬酸盐溶液的工艺

    公开(公告)号：US3032447A

    公开(公告)日：1962-05-01

    申请号：US77644358

    申请日：1958-11-26

    Applicant: PARKER RUST PROOF CO

    Inventor： WERNER RAUSCH

    IPC: B01J39/00 ,  B01J39/04 ,  C23C22/86

    CPC classification number: B01J39/00 ,  B01J39/04 ,  C23C22/86

    Abstract: In a process of forming a chromate coating on a series of articles of one of the metals, zinc, alloys consisting predominantly of zinc, magnesium, cadmium, copper, silver or brass by treating them with a single aqueous acidic solution containing hexavalent chromium in which the metal or trivalent chromium tends to accumulate in the solution during the treatment and interfere with the coating, the concentration of interfering metal is maintained at a level below that at which it deletenously affects the coating by withdrawing portions of the solution, passing them through a bed of a cation-exchange resin in a form containing both hydrogen ions and other cations that are harmless to the coating in proportions such that the solution is maintained in the effective pH range, and then returning them to the main body of the solution. The other cations may be those of alkali metals or ammonium. Treatment of the solution (which may also contain simple or complex fluoride ions, phosphate ions, sulphate ions, chloride ions, nitrate ions, ferricyanide ions, or arsenate ions) with the resin may be either continuous or intermittent; and two beds of resin are preferably used so that treatment of the solution and regeneration of the resin may be performed simultanously.

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