Methods and compositions using lanthanum for removing phosphates from water
    61.
    发明授权
    Methods and compositions using lanthanum for removing phosphates from water 有权
    使用镧从水中去除磷酸盐的方法和组合物

    公开(公告)号:US06338800B1

    公开(公告)日:2002-01-15

    申请号:US09507744

    申请日:2000-02-22

    Abstract: A partially soluble lanthanide compound and methods for use in removing phosphate from water. Preferably the compound is used in removing phosphate from water in swimming pools, spas, and similar structures. Alternatively, a combination of compounds having varying solubilities may be used to remove phosphate from water. Several water treatment techniques are disclosed, as well as a variety of different methods for delivery of the active ingredients. These delivery methods include use of a slurry of the active reagent in solution as well as a tablet, powder, or granulated structure. Additionally, the water treatment techniques may incorporate the use of a combination including both enzymatic compositions and compounds for phosphate removal.

    Abstract translation: 部分可溶性镧系元素化合物和用于从水中除去磷酸盐的方法。 优选地,该化合物用于在游泳池,水疗中心和类似结构中从水中除去磷酸盐。 或者,可以使用具有不同溶解度的化合物的组合来从水中除去磷酸盐。 公开了几种水处理技术,以及用于递送活性成分的各种不同的方法。 这些递送方法包括在溶液中使用活性试剂的浆液以及片剂,粉末或造粒结构。 另外,水处理技术可以包括使用包括酶组合物和化合物在内的磷酸盐去除的组合。

    Apparatus and method for wastewater nutrient recovery
    62.
    发明授权
    Apparatus and method for wastewater nutrient recovery 有权
    废水养分回收装置及方法

    公开(公告)号:US06331249B1

    公开(公告)日:2001-12-18

    申请号:US09649472

    申请日:2000-08-28

    Abstract: An apparatus for treating a secondary treated wastewater effluent. The apparatus comprises an anoxic first zone for accepting the secondary effluent wherein the first zone includes heterotrophic bacteria, a carbon source, and an outlet structure including a limestone aggregate. The apparatus further comprises a second zone including an entrance structure that is in fluid communication with the outlet structure and an exit structure in fluid communication with the second zone. The exit structure includes a cationic exchange medium wherein the exit structure discharges the effluent to a disposal mechanism such as a subsurface disposal field.

    Abstract translation: 一种二次处理废水流出物处理装置。 该装置包括用于接受二次流出物的缺氧第一区,其中第一区包括异养细菌,碳源和包括石灰石聚集体的出口结构。 该装置还包括第二区域,其包括与出口结构流体连通的入口结构和与第二区域流体连通的出口结构。 出口结构包括阳离子交换介质,其中出口结构将流出物排放到处置机构,例如地下处置场。

    Water treatment process
    63.
    发明授权
    Water treatment process 失效
    水处理工艺

    公开(公告)号:US06322701B1

    公开(公告)日:2001-11-27

    申请号:US09297487

    申请日:1999-06-16

    Abstract: A process for the treatment of waste waters containing chemically reducible dissolved organic and inorganic pollutants and suspended mater in particulate or colloidal form. The process comprises of contacting the water with metallic iron or ferrous ions (Fe2+), or mixtures thereof, in the presence of promoter metals, such as Cu, Pd, Pt, Au, Ag, and Ni, or oxides, sulfides and other insoluble compounds of these meals, which catalyze the redox reductions carried out by the iron or ferrous reagents. The production of ferric ions (Fe3+) as a final iron oxidation product allows for the simultaneous coagulation and precipitation of suspended colloidal and particulate solids out of the aqueous phase. In addition to the main reductive reaction scheme, the system performs a multitude of secondary reactions involving the ferrous and ferric ions produced in-situ which allows for the simultaneous removal of specific target pollutants, such as phosphate and hydrogen sulfide. The net effect of a treatment in accordance to this invention is the decrease in a wide range of carbonaceous, nitrogenous and other targeted pollutants present in a waste water stream in a dissolved, colloidal or particulate form and the chemical conversion, commonly referred to as “softening”, of non-readily biodegradable pollutants through a generally complex set of reactions and physical processes. As a result, the implementation of the process prior to or in parallel to conventional biological treatment makes the latter more feasible, more efficient, more economical in terms of both capital investment and operating cost and, also, the anally discharged water more compatible with environmental demands.

    Abstract translation: 一种用于处理含有化学还原性溶解有机和无机污染物的废水和颗粒或胶体形式的悬浮物的方法。 该方法包括在助催化剂金属例如Cu,Pd,Pt,Au,Ag和Ni或氧化物,硫化物和其它不溶性的存在下使水与金属铁或亚铁离子(Fe 2+)或其混合物接触 这些膳食的化合物,其催化由铁或亚铁试剂进行的氧化还原还原。 作为最终铁氧化产物的铁离子(Fe 3+)的生产允许悬浮的胶体和颗粒固体同时凝结并沉淀出水相。 除主要还原反应方案外,该系统还进行大量二次反应,涉及原位产生的亚铁和三价铁离子,允许同时除去特定的目标污染物,如磷酸盐和硫化氢。 根据本发明的处理的净效果是存在于溶解,胶体或微粒形式的废水流中的大量含碳,含氮和其它目标污染物的减少以及通常称为“ 软化“,通过一套复杂的反应和物理过程,不易生物降解的污染物。 因此,在传统生物处理之前或之后实施该过程使得后者在资本投资和运营成本方面更可行,更有效率,更经济,并且还释放更多与环境相适应的水 需要。

    Method and apparatus for the conditioning of phosphoric acid
    64.
    发明授权
    Method and apparatus for the conditioning of phosphoric acid 失效
    用于调节磷酸的方法和设备

    公开(公告)号:US06264177B1

    公开(公告)日:2001-07-24

    申请号:US09074430

    申请日:1998-05-07

    CPC classification number: C02F1/5245 Y10S210/906 Y10S423/01 Y10S423/02

    Abstract: A method for the conditioning of phosphoric acid containing solutions is described, wherein the solution is converted to a solid material by adding an aluminum compound. This solid material can readily be stored in disposal sites because it is not water-soluble. This method is particularly suited for the conditioning of phosphoric acid containing solutions from metal processing. An apparatus (10) for carrying out the method has a mixing tube (12) with a longitudinal axis (M) as well as an inlet (14) and an outlet (16). At least two liquid supply nozzles (18 and 20) open into the mixing tube inlet (14) and, with respect to the inlet crosssectional area of same, into a central area. Moreover, at least one gas supply nozzle (22) which is arranged radially outward of the liquid supply nozzles (18 and 22) opens into the mixing tube inlet (14). The longitudinal axis (G) of each gas supply nozzle (22) is inclined relative to the longitudinal center axis (M) in such a manner that said axes do not intersect. The angle between each longitudinal axis (G) and the longitudinal center axis (M) amounts to at least 5°.

    Abstract translation: 描述了一种用于调节含磷酸溶液的方法,其中通过加入铝化合物将溶液转化成固体材料。 这种固体材料可以容易地储存在处理场所,因为它不是水溶性的。 该方法特别适用于从金属加工中调节含磷酸溶液。 用于执行该方法的装置(10)具有具有纵向轴线(M)以及入口(14)和出口(16)的混合管(12)。 至少两个液体供应喷嘴(18和20)打开到混合管入口(14)中,并且相对于其入口横截面面积进入中心区域。 此外,设置在液体供给喷嘴(18和22)的径向外侧的至少一个气体供给喷嘴(22)通向混合管入口(14)。 每个气体供给喷嘴(22)的纵向轴线(G)相对于纵向中心轴线(M)倾斜,使得所述轴线不相交。 每个纵向轴线(G)和纵向中心轴线(M)之间的角度至少为5°。

    Treatment of swimming pool water
    65.
    发明授权
    Treatment of swimming pool water 有权
    治疗游泳池水

    公开(公告)号:US6146539A

    公开(公告)日:2000-11-14

    申请号:US274534

    申请日:1999-03-23

    Abstract: Methods and compositions are disclosed for treating swimming pool waters in order to remove one or more nutrients necessary for algal growth and to accelerate the breakdown of objectionable chloramines within chlorinated pool waters. The target nutrients of preference are those containing phosphorus or nitrogen. Phosphorus nutrients are preferably removed by ion-exchange with finely divided lanthanum carbonate, or by direct precipitation in the pool with liquid lanthanum chloride. Nitrogen nutrients (including, in particular, chloramines) may be removed (possibly with the aid of catalysts and in separate reactors). The same reagents used to scavenge phosphates are useful in this regard, the nitrogen being released from the pool water as a nitrogenous gas. To allow the fine lanthanum carbonates to be conveniently handled in the pool environment, they may be linked to larger carrier particles, such as those of diatomaceous earth, or they may be embedded within porous beads formed from polymers or gels. In this form the reagent can be either added to, retained within and backwashed from pool filters, or added directly to pools (with or without a flocculating agent) and sucked to waste after settling. A variety of formulations for these purposes is disclosed.

    Abstract translation: 公开了用于处理游泳池水的方法和组合物,以便去除藻类生长所需的一种或多种营养物质并加速氯化池水中令人反感的氯胺的分解。 优选的目标营养素是含磷或氮的那些。 优选通过与细碎的碳酸镧离子交换或通过用液体氯化镧在池中直接沉淀来除去磷营养物质。 可以除去氮养分(包括,特别是氯胺)(可能借助于催化剂和在单独的反应器中)。 用于清除磷酸盐的相同试剂在这方面是有用的,氮气作为含氮气体从池水中释放出来。 为了容易地在游泳池环境中处理细小的碳酸镧,它们可以连接到较大的载体颗粒,例如硅藻土的载体颗粒,或者它们可以嵌入由聚合物或凝胶形成的多孔珠中。 以这种形式,试剂可以加入,保留在池过滤器中并从池过滤器中反洗,或直接加入池(有或没有絮凝剂),并在沉降后吸入废物中。 公开了用于这些目的的各种制剂。

    Point-of-use removal of lead and copper in drinking water using
hydroxylapatite and carbonate minerals
    67.
    发明授权
    Point-of-use removal of lead and copper in drinking water using hydroxylapatite and carbonate minerals 失效
    使用羟基磷灰石和碳酸盐矿物的饮用水中的铅和铜的使用点去除

    公开(公告)号:US6106725A

    公开(公告)日:2000-08-22

    申请号:US728819

    申请日:1996-10-10

    Abstract: A process for removing lead and copper from drinking water discharged from a drinking water outlet while suppressing the concentration of phosphate ions comprising directing the water through a matrix comprising phosphate mineral with a very low phosphate solubility, and a solid carbonate mineral which is slightly soluble in water. The matrix is sized such that there is sufficient contacting between the water and the matrix to form a lead phosphate precipitate, reduce the lead concentration in the water to below 15 parts per billion, and suppress the phosphate ion concentration to 5 mg/L, preferably 3 mg/L, or below.

    Abstract translation: 一种从饮用水出口排出的饮用水中除去铅和铜的方法,同时抑制磷酸盐离子的浓度,包括引导水通过包含非常低磷酸盐溶解度的磷酸盐矿物的基质,以及微溶于 水。 基体的尺寸使得水和基质之间有足够的接触形成磷酸铅沉淀物,将水中的铅浓度降低到十五分之一以下,并将磷酸根离子浓度抑制在5mg / L以上 3 mg / L或以下。

    Method for treating organic waste water
    68.
    发明授权
    Method for treating organic waste water 失效
    有机废水处理方法

    公开(公告)号:US6106717A

    公开(公告)日:2000-08-22

    申请号:US184722

    申请日:1998-11-02

    Abstract: A method of treating an organic waste water, which is capable of separating and recovering phosphorus components in a liquid or solid form, is provided. According to the method of the present invention, reuse of phosphorus components can be facilitated, while the content of phosphorus components contained in a large quantity of a primary treated liquid can be reduced. The following steps are utilized in the method of the present invention: (1) an aeration step for aerobically treating a waste water; (2) a solid-liquid separation step for separating the waste water after the aeration into a primary treated liquid and a primary sludge; (3) a phosphorus component release step for releasing phosphorus components from the separated primary sludge to a liquid phase; and (4) a solid-liquid separation step for separating the primary sludge after releasing the phosphorus components into a secondary treated liquid containing the released phosphorus components and a secondary sludge essentially free from phosphorus components.

    Abstract translation: 提供一种能够分离和回收液体或固体形式的磷成分的有机废水的处理方法。 根据本发明的方法,可以促进磷成分的再利用,同时可以减少大量一次处理液中含有的磷成分的含量。 在本发明的方法中采用以下步骤:(1)用于对废水进行有氧处理的曝气步骤; (2)用于将通气后的废水分离成初级处理液和初级污泥的固液分离步骤; (3)将磷成分从分离的一级污泥释放到液相的磷成分释放工序; 和(4)固溶液分离步骤,用于在将磷成分释放到含有释放的磷成分的二次处理液和基本上不含磷成分的二次污泥中之后,将一级污泥分离。

    Treatment of swimming pool water
    69.
    发明授权

    公开(公告)号:US5897784A

    公开(公告)日:1999-04-27

    申请号:US911365

    申请日:1997-08-07

    Abstract: Methods and compositions are disclosed for treating swimming pool waters in order to remove one or more nutrients necessary for algal growth and to accelerate the breakdown of objectionable chloramines within chlorinated pool waters. The target nutrients of preference are those containing phosphorus or nitrogen. Phosphorus nutrients are preferably removed by ion-exchange with finely divided lanthanum carbonate, or by direct precipitation in the pool with liquid lanthanum chloride. Nitrogen nutrients (including, in particular, chloramines) may be removed (possibly with the aid of catalysts and in separate reactors). The same reagents used to scavenge phosphates are useful in this regard, the nitrogen being released from the pool water as a nitrogenous gas. To allow the fine lanthanum carbonates to be conveniently handled in the pool environment, they may be linked to larger carrier particles, such as those of diatomaceous earth, or they may be embedded within porous beads formed from polymers or gels. In this form the reagent can be either added to, retained within and backwashed from pool filters, or added directly to pools (with or without a flocculating agent) and sucked to waste after settling. A variety of formulations for these purposes is disclosed.

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