在选定的吸附剂上生产纯碱后，从废水中去除无机杂质。

Removal of inorganic impurities from wastewater after production of soda ash on selected sorbents.

机构信息

Bialystok University of Technology, Department of Technology in Engineering and Environmental Protection, Wiejska 45A, 15-351, Białystok, Poland.

出版信息

Sci Rep. 2020 Mar 12;10(1):4624. doi: 10.1038/s41598-020-61429-w.

DOI:10.1038/s41598-020-61429-w

PMID:32165687

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7067808/

Abstract

The soda ash industry is a part of the chemical industry, which is responsible for the production of sodium carbonate, calcium chloride, absorbent masses, evaporated wet salt, food salt, pickling salt or salt tablets. During manufacturing of those products, strongly alkaline wastewater is generated. It could be characterised by a high electrolytic conductivity and concentration of ions: chlorides, sulfates, phosphates, calcium, sodium, magnesium, potassium and ammonium. The aim of the research was to test the effectiveness of removing sodium, potassium, calcium, magnesium and ammonium from wastewater after production of soda ash by three sorbents: Halosorb, Compakt and Damsorb K. The process was carried out using dynamic method with different flow of wastewater through the column with sorbent. It allowed to reduce concentrations of all cations tested. Moreover, it was found that sorbent type did not significantly affect the removal of any of the ions, but the deposit load had significant impact on the removal of all ions tested.

摘要

纯碱工业是化学工业的一部分，负责生产碳酸钠、氯化钙、吸收剂、蒸发湿盐、食品盐、腌制盐或盐片。在这些产品的生产过程中，会产生强碱性废水。这种废水具有高电导率和高离子浓度的特点，其中包括氯化物、硫酸盐、磷酸盐、钙、钠、镁、钾和铵。本研究的目的是测试三种吸附剂（Halo sorb、Compakt 和 Damsorb K）在纯碱生产后从废水中去除钠、钾、钙、镁和铵的效果。该过程采用动态方法，通过装有吸附剂的柱子以不同的废水流量进行。该方法可以降低所有测试阳离子的浓度。此外，还发现吸附剂类型对任何离子的去除效果没有显著影响，但沉积物负荷对所有测试离子的去除效果有显著影响。