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Potential of Donnan dialysis water purification processes

机译：Donnan透析水净化工艺的潜力

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Donnan dialysis is an ions separation process utilizing ion exchange membranes. In this process, a solution of target ionic species is held in a feed compartment separated by an ion exchange membrane from a receiver compartment holding a counter ion stripping solution of high concentration. Migration of counter-ions from the receiver compartment to the feed compartment induces an equivalent counter flow of target ions from the feed to the receiver compartment. The attractive features of Donnan dialysis lie in operational simplicity, low energy requirement and no chemicals requirement. Donnan dialysis holds a potential for many beneficial water purifications encompassing hardness removal and elimination of unwanted ions such as borates, nitrates and arsenates. The objective of the present paper is to describe a simple model enabling characterization of Donnan dialysis systems and to analyze developmental efforts required for enhancing practical application of Donnan dialysis water purification processes.
机译：Donnan透析是利用离子交换膜的离子分离过程。在该方法中，将目标离子种类的溶液保持在由离子交换膜与容纳高浓度抗衡离子汽提溶液的接收器隔室隔开的进料隔室中。反离子从接收器腔室向进料腔室的迁移引起目标离子从进料到接收器腔室的等效反流。 Donnan透析的吸引人之处在于操作简便，能耗低且无需化学药品。 Donnan透析具有许多有益的水净化潜力，包括去除硬度和消除不需要的离子，例如硼酸盐，硝酸盐和砷酸盐。本文的目的是描述一个能够表征Donnan透析系统的简单模型，并分析增强Donnan透析水净化工艺的实际应用所需的开发工作。

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