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

    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
    4.
    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

    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。

    Vinylamine polymers for removing color from paper mill effluents
    6.
    发明授权
    Vinylamine polymers for removing color from paper mill effluents 失效
    用于从造纸厂废水中除去颜色的乙烯基胺聚合物

    公开(公告)号:US5476594A

    公开(公告)日:1995-12-19

    申请号:US239802

    申请日:1994-05-09

    CPC classification number: C02F1/56 Y10S210/917 Y10S210/928

    Abstract: The invention comprises a process for removing true and apparent color from pulp and paper waste waters. It comprises treating these waste waters with a vinylamine polymer including from about 1 to about 100 mole percent vinylamine and from about 1 to about 99 mole percent of at least one monomer selected from the group consisting of amidine vinylformamide, vinyl alcohol, vinyl acetate, vinyl pyrrolidinone and the esters, amides, nitriles and salts of acrylic acid and methacrylic acid.

    Abstract translation: 本发明包括从纸浆和纸废水中去除真实和明显的颜色的方法。 它包括用包含约1至约100摩尔%乙烯胺和约1至约99摩尔%的至少一种选自脒乙烯基甲酰胺,乙烯醇,乙酸乙烯酯,乙烯基的至少一种单体的乙烯基胺聚合物处理这些废水 吡咯烷酮和丙烯酸和甲基丙烯酸的酯,酰胺,腈和盐。

    Stable oil dispersible magnesium hydroxide slurries
    7.
    发明授权
    Stable oil dispersible magnesium hydroxide slurries 失效
    稳定的油分散氢氧化镁浆料

    公开(公告)号:US4412844A

    公开(公告)日:1983-11-01

    申请号:US277371

    申请日:1981-06-25

    CPC classification number: C10L10/04

    Abstract: Stable, oil dispersible, aqueous dispersions of magnesium hydroxide useful as deposit control additives for residual fuels can be prepared. These slurries, of magnesium hydroxide contain generally:(A) 20-70% Mg(OH).sub.2 having a particle size of 50 to 1.0 micron;(B) 79-29% water;(C) 1.0-8.0% of a water-in-oil emulsifying agent having an HLB value of from 2 to 11;(D) 0.1-6% of a water soluble water-in-oil emulsifying agent having an HLB value of from 10 to 40;Said dispersion having a Brookfield Viscosity of from 100-5000 cps. (#3 spindle at 12 rpm, 75.degree. F.)

    Abstract translation: 可以制备稳定的油分散性,用作残留燃料的沉积物控制添加剂的氢氧化镁的水分散体。 这些氢氧化镁浆料通常含有:(A)粒径为50-1.0微米的20-70%Mg(OH)2; (B)79-29%水; (C)HLB值为2〜11的油包水型乳化剂1.0〜8.0% (D)0.1-6%HLB值为10〜40的水溶性油包水乳化剂; 所述分散体的Brookfield粘度为100-5000cps。 (#3轴12rpm,75°F

    Method of improving membrane bioreactor performance
    9.
    发明申请
    Method of improving membrane bioreactor performance 有权
    改善膜生物反应器性能的方法

    公开(公告)号:US20080060996A1

    公开(公告)日:2008-03-13

    申请号:US11520543

    申请日:2006-09-13

    CPC classification number: C02F3/1273 C02F1/5236 C02F1/56 C02F2209/06 Y02W10/15

    Abstract: Cationic polymers having a molecular weight greater than about 200,000 can be added to the activated sludge in an MBR for industrial wastewater treatment for reasons, which include: conditioning the activated sludge; improving flux through a membrane in the MBR; reducing fouling of the of the membrane in the MBR; and reducing foaming of the activated sludge in the MBR.

    Abstract translation: 为了工业废水处理的MBR,活性污泥中可以加入分子量大于约200,000的阳离子聚合物,其中包括:调节活性污泥; 改善通过MBR中的膜的通量; 减少MBR中膜的结垢; 并减少MBR中活性污泥的起泡。

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