Process for treating waste water of flue gas desulfurization
    2.
    发明授权
    Process for treating waste water of flue gas desulfurization 失效
    烟气脱硫废水处理工艺

    公开(公告)号:US5853598A

    公开(公告)日:1998-12-29

    申请号:US808397

    申请日:1997-02-28

    CPC分类号: B01D53/501 C02F1/5245

    摘要: A process for treating waste water of flue gas desulfurization comprising successively adjusting the pH of the waste water to 5 or less, bringing the waste water into contact with a column packed with fine particles of iron, flocculating the waste water, removing formed flocs from the waste water by solid-liquid separation, and optionally, bringing the remaining waste water into contact with a resin for COD adsorption, successively. Hazardous substances, such as oxidative substances, peroxosulfuric acid, iodic acid, heavy metals such as copper and lead, and non-metallic substances such as selenium compounds and fluorites, can be removed simultaneously and efficiently from the waste water of flue gas desulfurization containing these hazardous substances by using the process which is a simplified waste water disposal system. Water having an excellent quality for a long time can be obtained by the process because deterioration of a resin for COD adsorption by oxidative substances such as peroxosulfuric acid and iodic acid can be prevented. Thus, an easy and efficient process for treating waste water of flue gas desulfurization can be provided.

    摘要翻译: 一种处理烟气脱硫废水的方法,包括将废水的pH值依次调整到5以下,使废水与填充有铁细小颗粒的柱接触,使废水絮凝,将形成的絮凝物从 依次通过固液分离的废水,以及任选地使残留的废水与用于COD吸附的树脂接触。 有害物质如氧化物质,过氧硫酸,碘酸,重金属如铜和铅,以及非金属物质如硒化合物和萤石,可以从含有这些物质的烟道气脱硫废水中同时有效地除去 通过使用简化的废水处理系统的方法来处理有害物质。 通过该过程可以获得长时间优质的水,因为可以防止由氧化物质如过氧硫酸和碘酸对用于COD吸附的树脂的劣化。 因此,可以提供一种用于处理烟道气脱硫废水的简单有效的方法。