知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

21 records (took 0.03 seconds)

    Method of using high molecular weight water soluble polymers in membrane bioreactor systems
    1.
    发明授权
    Method of using high molecular weight water soluble polymers in membrane bioreactor systems 有权
    在膜生物反应器系统中使用高分子量水溶性聚合物的方法

    公开(公告)号：US06872312B1

    公开(公告)日：2005-03-29

    申请号：US10342860

    申请日：2003-01-15

    Applicant: Jitendra T. Shah ,  Kristine S. Salmen ,  John H. Collins

    Inventor： Jitendra T. Shah ,  Kristine S. Salmen ,  John H. Collins

    IPC: C02F1/44 ,  C02F1/56 ,  C02F3/12 ,  C02F11/12 ,  C02F3/02

    CPC classification number: C02F3/1273 ,  C02F1/444 ,  C02F1/56 ,  C02F11/121 ,  Y02W10/15

    Abstract: An activated sludge process for the clarification of wastewater comprising introducing the wastewater into a reactor where microorganisms consume organic material in the wastewater to form a mixed liquor comprising water, the microorganisms and an activated sludge; separating clarified water from the mixed liquor by filtration through a microfiltration or ultrafiltration membrane; separating the activated sludge from the mixed liquor; adding to the activated sludge at least one high molecular weight water soluble polymer to form a mixture of water and coagulated and flocculated solids; dewatering the coagulated and flocculated solids to form a mixture of dewatered solids and filtrate water; and recycling the filtrate water into the mixed liquor and a method of controlling polymer dosage, preferably using fluorescence emission spectroscopy.

    Abstract translation: 一种用于澄清废水的活性污泥方法，包括将废水引入反应器，其中微生物在废水中消耗有机物质以形成包含水，微生物和活性污泥的混合液; 通过微滤或超滤膜过滤分离澄清的水与混合液; 从混合液中分离活性污泥; 向活性污泥中加入至少一种高分子量水溶性聚合物以形成水和凝结和絮凝固体的混合物; 将凝固和絮凝的固体脱水以形成脱水固体和滤液水的混合物; 并将滤液水循环到混合液中，并且优选使用荧光发射光谱法和控制聚合物剂量的方法。

    Emulsion destabilization and treatment
    2.
    发明授权
    Emulsion destabilization and treatment 失效
    乳化不稳定和处理

    公开(公告)号：US5200086A

    公开(公告)日：1993-04-06

    申请号：US747776

    申请日：1991-08-20

    Applicant: Jitendra T. Shah ,  Thomas M. Miller ,  John H. Collins

    Inventor： Jitendra T. Shah ,  Thomas M. Miller ,  John H. Collins

    IPC: B01D37/02 ,  C02F1/52 ,  C02F1/54

    CPC classification number: C02F1/54 ,  B01D37/02 ,  C02F1/5209

    Abstract: A method for treating and resolving a phosphorus containing oily waste emulsion is described. The treatment uses an emulsion destabilizing cationic polymer of low molecular weight in combination with filter aids to form a coacervate slurry. The coacervate slurry can be optionally treated with either high molecular weight anionic or cationic coagulents, or combination thereof. The suspended solids formed by the above treatments are removed from the slurries and wasted or discarded or incinerated. The remaining liquids may be recycled, reused, or treated as effluent meeting environmental standards.

    Abstract translation: 描述了一种用于处理和分解含磷油性废乳液的方法。 该处理使用低分子量的乳液去稳定化阳离子聚合物与助滤剂组合以形成凝聚浆料。 可以任选地用高分子量阴离子或阳离子凝固剂或其组合处理凝聚浆料。 通过上述处理形成的悬浮固体从浆料中除去并被浪费或丢弃或焚化。 剩余的液体可以循环使用，重复使用或作为满足环境标准的污水处理。

    Removal of selenium from refinery wastewater
    3.
    发明授权
    Removal of selenium from refinery wastewater 有权
    从炼厂废水中去除硒

    公开(公告)号：US08282835B2

    公开(公告)日：2012-10-09

    申请号：US12721139

    申请日：2010-03-10

    Applicant: Daniel E. Schwarz ,  Jitendra T. Shah

    Inventor： Daniel E. Schwarz ,  Jitendra T. Shah

    IPC: B01D21/00 ,  C02F1/52 ,  B03D3/00

    CPC classification number: C02F1/72 ,  C02F1/5236 ,  C02F1/66 ,  C02F1/722 ,  C02F1/78 ,  C02F2103/18

    Abstract: The invention provides a method of efficiently removing selenium from water. The method involves: adding an oxidant to the liquid, adjusting the liquid's pH to below 7.5, adding ferric salt in an amount such that less than a quarter of selenium in the liquid precipitates and adding a poly dithiocarbamate material to the liquid in an amount such that the amount of poly dithiocarbamate material (in ppm) is greater than the amount of ferric salt (in ppm). This method removes far more selenium than previous methods, and does it using a smaller amount of expensive chemicals. Moreover this method makes it far more likely to achieve cost effective compliance with the ever-increasing environmental standards for selenium in water.

    Abstract translation: 本发明提供了一种有效地从水中除去硒的方法。 该方法包括：向液体中加入氧化剂，将液体的pH调节至7.5以下，加入三价盐，使得液体中少于四分之一的硒沉淀并加入聚二硫代氨基甲酸盐物质至一定量 聚二硫代氨基甲酸盐材料的量（ppm）大于铁盐的量（ppm）。 这种方法比以前的方法去除了更多的硒，并且使用较少量的昂贵的化学品。 此外，这种方法使得更有可能实现成本有效地符合不断增加的硒在水中的环境标准。

    Metal scavenging polymers
    5.
    发明授权
    Metal scavenging polymers 有权
    金属清除聚合物

    公开(公告)号：US08747789B2

    公开(公告)日：2014-06-10

    申请号：US12754660

    申请日：2010-04-06

    Applicant: Paul J. Zinn ,  Jitendra T. Shah ,  William J. Andrews

    Inventor： Paul J. Zinn ,  Jitendra T. Shah ,  William J. Andrews

    IPC: B01D53/46

    CPC classification number: C08G73/02 ,  C02F1/56 ,  C02F2101/20 ,  C08L79/02

    Abstract: A composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals is disclosed. These polymers have many uses in various mediums, including wastewater systems.

    Abstract translation: 公开了一种组合物，其包含衍生自至少两种单体的聚合物：丙烯酸x和烷基胺，其中所述聚合物被改性为含有能够清除含有一种或多种金属的一种或多种组合物的官能团。 这些聚合物在各种介质中具有许多用途，包括废水系统。

    Method of reducing fouling in filters for industrial water system analytical devices
    8.
    发明授权
    Method of reducing fouling in filters for industrial water system analytical devices 有权
    减少工业用水系统分析装置过滤器污垢的方法

    公开(公告)号：US06662636B2

    公开(公告)日：2003-12-16

    申请号：US10016152

    申请日：2001-12-13

    Applicant: Jitendra T. Shah ,  Brian S. Johnson

    Inventor： Jitendra T. Shah ,  Brian S. Johnson

    IPC: B01D3522

    CPC classification number: G01N1/4077 ,  B01D61/12 ,  B01D61/22 ,  B01D65/10 ,  G01N1/14 ,  G01N1/2035

    Abstract: The invention is in a method of analyzing the water of an industrial water system wherein an analytical device is used to measure some parameter capable of being measured in the water of said industrial water system, the improvement involving using a water movement device that is capable of moving a sample of water into the sample chamber of said analytical device and is also capable of moving the same sample of water back out of said analytical device in a manner such that the filters present in the piping of said industrial water system are back flushed out every time the water movement device moves a sample of water in and out of said analytical device. Optionally an air sparge is used to enhance the cleaning of the filters.

    Abstract translation: 本发明是一种分析工业用水系统的水的方法，其中分析装置用于测量能够在所述工业水系统的水中测量的一些参数，涉及使用能够 将样品的水移动到所述分析装置的样品室中，并且还能够将相同的水样品从所述分析装置移出，使得存在于所述工业水系统的管道中的过滤器被反冲出 每次水移动装置将水样品进出所述分析装置。 可选地，使用空气喷射来增强过滤器的清洁。

    Tagged epichlorohydrin-dimethylamine copolymers for use in wastewater treatment
    9.
    发明授权
    Tagged epichlorohydrin-dimethylamine copolymers for use in wastewater treatment 失效
    标记用于废水处理的表氯醇 - 二甲胺共聚物

    公开(公告)号：US5705394A

    公开(公告)日：1998-01-06

    申请号：US572937

    申请日：1995-12-15

    Applicant: Sivakumar Ananthasubramanian ,  Jitendra T. Shah ,  Jeffrey R. Cramm

    Inventor： Sivakumar Ananthasubramanian ,  Jitendra T. Shah ,  Jeffrey R. Cramm

    IPC: G01N21/64 ,  G01N21/75

    CPC classification number: G01N21/6428 ,  Y10T436/12 ,  Y10T436/13

    Abstract: The invention comprises a method of determining the concentration of a water soluble polymeric treating agent added to wastewater treatment system. The method comprises several steps including dosing the body of water with a predetermined concentration of a treating agent having a fluorescent tag covalently bonded to the treating agent, removing a sample of the water containing the tagged treating agent, analyzing the emissivity of the sample to measure the concentration of the treating agent in the sample and adjusting the concentration of the treating agent accordingly to fit within a predetermined concentration range.

    Abstract translation: 本发明包括确定添加到废水处理系统中的水溶性聚合物处理剂的浓度的方法。 该方法包括几个步骤，包括给予具有预定浓度的具有共价键合到处理剂上的荧光标签的处理剂的水体，除去含有标记处理剂的水样品，分析样品的发射率以测量 样品中处理剂的浓度，并相应调节处理剂的浓度以适应预定浓度范围。

Patent Agency Ranking