MEMBRANE CLEANING WITH PULSED GAS SLUGS
    1.
    发明申请
    MEMBRANE CLEANING WITH PULSED GAS SLUGS 审中-公开
    膜清洁与脉冲气体SLUGS

    公开(公告)号:US20120285885A1

    公开(公告)日:2012-11-15

    申请号:US13396275

    申请日:2012-02-14

    IPC分类号: B01D65/02

    摘要: Aspects and embodiments of the present application are direction to systems and methods for treating fluids and to systems and methods for cleaning membrane modules used in the treatment of fluids. Disclosed herein is a membrane filtration system and a method of operating same. The membrane filtration system comprises a plurality of membrane modules positioned in a feed tank, at least one of the membrane modules having a gas slug generator positioned below a lower header thereof, the gas slug generator configured and arranged to deliver a gas slug along surfaces of membranes within the at least one of the membrane modules. The membrane filtration system may further comprise a global aeration system configured to operate independently from an aeration system providing a gas to the gas slug generator. The global aeration system may be configured and arranged to induce a global circulatory flow of fluid throughout the feed tank.

    摘要翻译: 本申请的方面和实施例是用于处理流体的系统和方法以及用于清洁用于处理流体的膜组件的系统和方法的方向。 本文公开了膜过滤系统及其操作方法。 膜过滤系统包括多个位于进料罐中的膜模块,至少一个膜组件具有位于其下集管下方的气体块发生器,该气体块生成器构造和布置成沿着 至少一个膜组件内的膜。 膜过滤系统可以进一步包括全局曝气系统,其被配置为独立地从向气体发生器提供气体的曝气系统进行操作。 全球曝气系统可以被配置和布置成在整个进料罐中引起流体的全局循环流动。

    Sulfate removal from water sources
    6.
    发明授权
    Sulfate removal from water sources 有权
    从水源中除去硫酸盐

    公开(公告)号:US08815096B2

    公开(公告)日:2014-08-26

    申请号:US12936143

    申请日:2009-04-13

    摘要: An integrated process for removing sulfate from water sources, such as pretreated acid mine drainage (AMD). The multivalent cation (MVC) content of a sulfate stream is reduced by strong acid cation (SAC) ion exchange and sulfate is concentrated with a membrane system and separated as precipitate and overflow. Precipitation results from reaction of sulfate with MVC produced by regeneration of SAC with sodium chloride. The overflow is reacted with carbonate to precipitate MVC, generate sodium chloride and give a further overflow stream. This latter stream is concentrated to a level capable of being a regenerant for the SAC and when needed, used to regenerate the SAC and produce MVC for sulfate precipitation. The process minimizes the use of chemicals by treating, reconcentrating and recycling input species. Capital expenditures are minimized by precipitation of only side streams.

    摘要翻译: 一种从水源除去硫酸盐的综合过程,如预处理的酸性矿井排水(AMD)。 硫酸盐流的多价阳离子(MVC)含量通过强酸阳离子(SAC)离子交换降低,硫酸盐用膜系统浓缩并分离为沉淀物和溢出物。 由硫酸盐与通过用氯化钠再生产生的MVC反应产生的沉淀。 使溢出物与碳酸盐反应以沉淀MVC,产生氯化钠并产生另外的溢流。 将后一种流浓缩至能够作为SAC的再生剂的水平,并且当需要时,用于再生SAC并产生用于硫酸盐沉淀的MVC。 该过程通过处理,再浓缩和回收输入物质来最小化化学品的使用。 资本支出由于只有边流降水才能最小化。

    SULFATE REMOVAL FROM WATER SOURCES
    9.
    发明申请
    SULFATE REMOVAL FROM WATER SOURCES 有权
    从水源中除去硫酸

    公开(公告)号:US20110132839A1

    公开(公告)日:2011-06-09

    申请号:US12936143

    申请日:2009-04-13

    摘要: An integrated process for removing sulfate from water sources, such as pretreated acid mine drainage (AMD). The multivalent cation (MVC) content of a sulfate stream is reduced by strong acid cation (SAC) ion exchange and sulfate is concentrated with a membrane system and separated as precipitate and overflow. Precipitation results from reaction of sulfate with MVC produced by regeneration of SAC with sodium chloride. The overflow is reacted with carbonate to precipitate MVC, generate sodium chloride and give a further overflow stream. This latter stream is concentrated to a level capable of being a regenerant for the SAC and when needed, used to regenerate the SAC and produce MVC for sulfate precipitation. The process minimizes the use of chemicals by treating, reconcentrating and recycling input species. Capital expenditures are minimized by precipitation of only side streams.

    摘要翻译: 一种从水源除去硫酸盐的综合过程,如预处理的酸性矿井排水(AMD)。 硫酸盐流的多价阳离子(MVC)含量通过强酸阳离子(SAC)离子交换降低,硫酸盐用膜系统浓缩并分离为沉淀物和溢出物。 由硫酸盐与通过用氯化钠再生产生的MVC反应产生的沉淀。 使溢出物与碳酸盐反应以沉淀MVC,产生氯化钠并产生另外的溢流。 将后一种流浓缩至能够作为SAC的再生剂的水平,并且当需要时,用于再生SAC并产生用于硫酸盐沉淀的MVC。 该过程通过处理,再浓缩和回收输入物质来最小化化学品的使用。 资本支出由于只有边流降水才能最小化。

    Method for treating water by ballasted flocculation and decantation
    10.
    发明授权
    Method for treating water by ballasted flocculation and decantation 失效
    通过压载絮凝和倾析处理水的方法

    公开(公告)号:US07311841B2

    公开(公告)日:2007-12-25

    申请号:US10499108

    申请日:2002-12-19

    IPC分类号: C02F1/52

    摘要: The invention concerns a water treatment method which consists in introducing coagulated water in a flocculation zone, to enable flocculation of microflocs in the presence and around a ballast; introducing the mixture in a decantation zone; separating the treated water in overflow and a mixture of sludge and the ballast in underflow; conveying at least part of said mixture to a sludge/ballast separating system and recycling into or upstream of the flocculation zone the ballast and part of the sludge introduced in said separation system. The invention is characterized in that it comprises steps which consists in conveying the mixture to the sludge/ballast separating system; in subjecting said mixture to a ballast concentration, extracting the ballast from the sludge extracted from the separation system; and more than 20% of the volume entering the sludge/ballast separating system is recycled into or upstream of the flocculation zone, after passing through at least part of the sludge/ballast separation system; and the ballast has an effective diameter greater than 60 micrometers, and the sludge extracted from the treatment system has a concentration higher than 5 g/L.

    摘要翻译: 本发明涉及一种水处理方法,其包括在絮凝区域中引入凝结水,以使镇流器存在和周围能够使微团聚体絮凝; 将混合物引入滗析区; 在溢流中分离处理过的水和污泥和镇流器的混合物; 将至少部分所述混合物输送到污泥/镇流器分离系统,并将絮凝区和所述分离系统中引入的污泥的一部分再循环到絮凝区的上游。 本发明的特征在于它包括将混合物输送到污泥/镇流分离系统的步骤; 在对所述混合物进行镇流器浓度的同时,从分离系统中提取的污泥中提取镇流器; 并且在通过至少部分污泥/镇流器分离系统之后,进入污泥/镇流器分离系统的体积的20%以上再循环到絮凝区的上游或上游; 镇流器的有效直径大于60微米,从处理系统提取的污泥浓度高于5克/升。