Process for selective removal and recovery of chromates from water
    111.
    发明授权
    Process for selective removal and recovery of chromates from water 失效
    从水中选择性去除和还原铬酸盐的方法

    公开(公告)号:US3664950A

    公开(公告)日:1972-05-23

    申请号:US3664950D

    申请日:1970-06-23

    CPC classification number: C01G37/003 B01J41/05 B01J49/07

    Abstract: An improved anion-exchange process for the removal and recovery of trace quantities of chromates from water. The process utilizes a bed of basic anion-exchange resin and the combination of upflow exhaustion of the chromates from the water and downflow regeneration of the resin. Efficient recovery of chromates is accomplished while virtually eliminating chromate leakage during the initial portion of the exhaustion operation. Regeneration can be accomplished without the use of strong, expensive chemicals.

    Abstract translation: 改进的阴离子交换方法,用于从水中去除和回收痕量的铬酸盐。 该方法使用碱性阴离子交换树脂床和来自水的铬酸盐向上流出的顺序和树脂的下流再生的组合。 完成铬酸盐的有效回收,同时在排气操作的初始部分实际消除铬酸盐泄漏。 可以在不使用强大且昂贵的化学品的情况下完成再生。

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