Treatment of suspensions
    2.
    发明授权
    Treatment of suspensions 失效
    治疗悬浮液

    公开(公告)号:US07252783B2

    公开(公告)日:2007-08-07

    申请号:US10472788

    申请日:2002-04-02

    IPC分类号: C02F1/56

    摘要: A method of dewatering a suspension of solids in an aqueous medium, comprising introducing into the suspension a flocculating system, which flocculation system comprises, a) a substantially non-ionic water-soluble polymer and b) a cationic polymeric flocculant of intrinsic viscosity at least 4 dl/g, thereby causing the solids to flocculate, separating the flocculated from aqueous medium, characterized in that i) the components a) and b) are introduced into the suspension as an aqueous blend; or ii) component a) is a non-ionic polymer that has an average molecular weight of below 750,000 and components a) and b) are introduced into the suspension as an aqueous blend or separately. Also claimed is an aqueous composition comprising the substantially non-ionic water-soluble polymer and cationic polymer, method for making it and a composition comprising a blend of substantially anhydrous particles of component (a) and component (b). The method and novel composition are particularly suitable for dewatering aqueous suspensions such as sewage sludges.

    摘要翻译: 一种将固体悬浮液在水性介质中脱水的方法,包括将絮凝体系引入悬浮液中,所述絮凝体系包含:a)基本上非离子的水溶性聚合物,和b)至少具有特性粘度的阳离子聚合物絮凝剂 4dl / g,从而导致固体絮凝,从水性介质中分离絮凝物,其特征在于i)将组分a)和b)作为水性共混物引入悬浮液中; 或ii)组分a)是平均分子量低于750,000的非离子聚合物,并且组分a)和b)作为水性共混物或分开地引入到悬浮液中。 还要求保护的是包含基本上非离子水溶性聚合物和阳离子聚合物的水性组合物,其制备方法和包含基本上无水的组分(a)和组分(b)的混合物的组合物。 该方法和新型组合物特别适用于脱水水性悬浮液如污水淤泥。

    Composition, amphoteric polymeric flocculant and use of both
    4.
    发明申请
    Composition, amphoteric polymeric flocculant and use of both 失效
    成分,两性聚合物絮凝剂和两者的使用

    公开(公告)号:US20040238454A1

    公开(公告)日:2004-12-02

    申请号:US10487918

    申请日:2004-02-27

    IPC分类号: C02F001/52

    摘要: A composition is provided which comprises amphoteric polymers comprising, as constituent monomer units, a cationic monomer unit, an anionic monomer unit, and optionally a nonionic monomer unit and having a 0.5% salted viscosity of 10 to 120 mPanulls, wherein said amphoteric polymers comprise a first amphoteric polymer satisfying the following expression (1) and a second amphoteric polymer satisfying the following expression (2) or a third amphoteric polymer satisfying the following expressions (3) and (4): Ca1/An1null1nullnull(1) Ca2/An2

    摘要翻译: 提供一种组合物,其包含两性聚合物,其包含作为构成单体单元的阳离子单体单元,阴离子单体单元和任选的非离子单体单元,并且具有10至120mPa.s的0.5%盐析粘度,其中所述两性聚合物 包含满足以下表达式(1)的第一两性聚合物和满足以下表达式(2)的第二两性聚合物或满足以下表达式(3)和(4)的第三种两性聚合物:Ca1 / An1> = 1(1) Ca2 / An2 <1(2)Ca3 / An3> = 1(3)|(Ca1-An1) - (Ca3-An3)|> = 1.5(4)其中Ca1和An1分别表示阳离子单体的总摩尔数 单位和第一两性聚合物中阴离子单体单元的总摩尔数,其中第一两性聚合物中所有构成单体单元的总摩尔数转化为100摩尔; 在类似于上述条件下,Ca2和An2以及Ca3和An3分别表示第二和第三两性聚合物中阳离子单体单元的总摩尔数和阴离子单体单元的总摩尔数。 该组合物对于各种污泥的各种絮凝和脱水性能优异,特别是对于污泥比例高的污泥,可用于造纸工艺中的工艺成品率提高。

    Process for reducing true color in waste liquids
    6.
    发明授权
    Process for reducing true color in waste liquids 失效
    减少废液中真实颜色的方法

    公开(公告)号:US06491827B1

    公开(公告)日:2002-12-10

    申请号:US09715792

    申请日:2000-11-17

    IPC分类号: C02F156

    摘要: Compositions of aluminum chlorohydrate and high molecular weight branched epichlorohydrin amine condensate polymers are applied to waste liquids, such as pulp and paper mill effluents having a lignin content, to reduce true color. The branched epichlorohydrin amine condensate polymer is branched using branching agents which result in a molecular weight greater than about 300,000 and permit solubility. When applied to waste liquids, the high molecular weight branched epichlorohydrin amine condensate polymer and aluminum chlorohydrate react with the lignin components in the waste liquid to form an insoluble agglomerate thus reducing the true color of the waste liquid. The resulting agglomerate, including the colored lignin, may be filtered from the waste liquid.

    摘要翻译: 将氯化铝水合物和高分子量支链表氯醇胺缩合物聚合物的组合物应用于具有木质素含量的废液,例如纸浆和造纸厂废水,以减少真实颜色。 支化的表氯醇胺缩合物聚合物使用支化剂进行支化,其导致分子量大于约300,000并允许溶解度。 当应用于废液时,高分子量支链表氯醇胺缩合物聚合物和氯化铝铝与废液中的木质素组分反应形成不溶性聚集体,从而降低废液的真实颜色。 所得到的附聚物,包括着色的木质素,可以从废液中过滤。

    Elixir for inducing high-speed settlement of precipatates
    7.
    发明授权
    Elixir for inducing high-speed settlement of precipatates 失效
    诱导高效沉降沉淀的药剂

    公开(公告)号:US06432321B1

    公开(公告)日:2002-08-13

    申请号:US09664638

    申请日:2000-09-19

    IPC分类号: C02F156

    摘要: An elixir to aid in the coagulation and flocculation of metal precipitates in wastewater, and to aid in their settling out of the wastewater solution, comprising: 1) a first anionic polymer with a high molecular weight and a high charge density, 2) a second anionic polymer with a high molecular weight, 3) a liquid emulsion anionic flocculant with a high molecular weight and a high charge density, and 4) water.

    摘要翻译: 一种助剂,用于帮助废水中金属沉淀物的凝结和絮凝,并帮助其沉淀出废水溶液,其包括:1)具有高分子量和高电荷密度的第一阴离子聚合物,2)第二 具有高分子量的阴离子聚合物,3)具有高分子量和高电荷密度的液体乳液阴离子絮凝剂,以及4)水。

    Dewatering of aqueous suspensions
    9.
    发明授权
    Dewatering of aqueous suspensions 失效
    脱水水悬浮液

    公开(公告)号:US6063291A

    公开(公告)日:2000-05-16

    申请号:US11024

    申请日:1998-02-05

    摘要: Belt pressing or other pressure dewatering of a high solids mineral suspension is facilitated by flocculating the suspension by mixing into the suspension anionic flocculant having IV at least 5 dl/g and a minor amount of a cationic flocculant which generally has IV at least 4 dl/g. The flocculants are normally such that counterionic precipitation occurs.

    摘要翻译: PCT No.PCT / GB96 / 01917 Sec。 371日期:1998年2月5日 102(e)1998年2月5日PCT PCT 1996年8月7日PCT公布。 公开号WO97 / 06111 日期1997年2月20日通过将悬浮液通过混合至IV至少为5dl / g的悬浮阴离子絮凝剂和少量通常具有IV的阳离子絮凝剂来絮凝悬浮液来促进高固体矿物悬浮液的压制或其它压力脱水 至少4dl / g。 絮凝剂通常会发生抗衡沉淀。