USE OF PERCARBOXYLIC ACIDS FOR SCALE PREVENTION IN TREATMENT SYSTEMS

    公开(公告)号:US20210276906A1

    公开(公告)日:2021-09-09

    申请号:US17303117

    申请日:2021-05-20

    申请人: ECOLAB USA INC.

    IPC分类号: C02F5/10 C02F1/50 C02F5/02

    摘要: Methods of employing peroxycarboxylic acid compositions for the prevention of scale formation and in some embodiments the removal of existing scale are disclosed. In particular, the scale inhibition properties of percarboxylic acids of varying chain lengths including C1-C22 provide effective scale inhibition and scale removal or destruction. Methods of employing peroxycarboxylic acid compositions for scale inhibition and/or removal are particularly well suited for treating fluids intended to flow through pipes, namely in the energy industry, water and paper industries, etc. The methods provide suitable scale inhibition replacements and/or additives to known scale inhibitors.

    REDUCTION OF HYDROGEN SULFIDE AND/OR MALODOR GASSING FROM WATER VIA THE ADDITION OF PEROXYACETIC ACID/HYDROGEN PEROXIDE PRODUCT
    8.
    发明申请
    REDUCTION OF HYDROGEN SULFIDE AND/OR MALODOR GASSING FROM WATER VIA THE ADDITION OF PEROXYACETIC ACID/HYDROGEN PEROXIDE PRODUCT 有权
    过氧化氢/过氧化氢产品的添加减少了硫化氢和/或恶臭味。

    公开(公告)号:US20150197438A1

    公开(公告)日:2015-07-16

    申请号:US14665839

    申请日:2015-03-23

    申请人: ECOLAB USA INC.

    IPC分类号: C02F1/72

    摘要: The invention provides methods and compositions for reducing the malodorous sulfide gas released by a wastewater treatment system. The method preserves the vitality of waste consuming organisms within the system. The method comprises the steps of: determining the SRP PAA demand of the system, determining the aerobic PAA demand of the system, and adding a composition in an amount such that it is in excess of the SRP PAA demand but is below the aerobic PAA demand. Even though the composition increases the amount of sulfates within the wastewater it reduces the amount of SRP which prevents the malodorous sulfite gas release. The composition comprises at least one percarboxyacid.

    摘要翻译: 本发明提供了减少由废水处理系统释放的恶臭硫化物气体的方法和组合物。 该方法保持系统内消耗废物的生物体的活力。 该方法包括以下步骤:确定系统的SRP PAA需求,确定系统的有氧PAA需求,并添加一个量超过SRP PAA需求但低于有氧PAA需求量的组成 。 即使组合物增加了废水中的硫酸盐的量,也减少了防止恶臭的亚硫酸盐气体释放的SRP的量。 组合物包含至少一种过羧酸。

    METHODS FOR FORMING PEROXYFORMIC ACID AND USES THEREOF

    公开(公告)号:US20220227708A1

    公开(公告)日:2022-07-21

    申请号:US17658471

    申请日:2022-04-08

    申请人: ECOLAB USA INC.

    摘要: The present invention relates generally to methods for forming peroxyformic acid, comprising contacting formic acid with hydrogen peroxide. The methods for forming peroxyformic acid can include adding formic acid with a relatively lower concentration of hydrogen peroxide, or adding formic acid to a peroxycarboxylic acid composition or forming composition to react with hydrogen peroxide in the compositions. The present invention also relates to peroxyformic acid formed by the above methods. The present invention further relates to the uses of peroxyformic acid for treating a variety of targets, e.g., target water, including target water used in connection with oil- and gas-field operations. The present invention further relates to methods for reducing or removing H2S or iron sulfide in the treated water source, improving clarity of the treated water source, or reducing the total dissolved oxygen or corrosion in the treated water source, using peroxyformic acid, including peroxyformic acid generated in situ.