Isolation of Chloride Sodium from Concentrated Wastewater in Chemical Productions


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The process of separation of sodium chloride from its aqueous solutions with concentrations of more than 14.65 wt % by adding acetone to the system was studied. The solubility equation of NaCl in the water–ac-etone–NaCl system was derived at acetone concentrations of more than 84.5 wt %. It was shown that the optimal mass ratio of acetone and the initial salt solution is (8–9): 1. In this case, more than 94% NaCl precipitates. A block diagram of the wastewater treatment process for chemical plants with a high NaCl content is presented.

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G. Dmitriev

Topchiev Institute of Petrochemical Synthesis

编辑信件的主要联系方式.
Email: dmitriev.gs@mail.ru
俄罗斯联邦, Moscow, 119991

L. Zanaveskin

Topchiev Institute of Petrochemical Synthesis

Email: dmitriev.gs@mail.ru
俄罗斯联邦, Moscow, 119991

T. Shorina

Topchiev Institute of Petrochemical Synthesis; Mendeleev University of Chemical Technology of Russia

Email: dmitriev.gs@mail.ru
俄罗斯联邦, Moscow, 119991; Moscow, 125047

M. Makhin

Topchiev Institute of Petrochemical Synthesis

Email: dmitriev.gs@mail.ru
俄罗斯联邦, Moscow, 119991

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