Experimental Study on the Application of Humidification-Dehumidification Technology in the Desalination of High- Salt Industrial Wastewater

被引：0
|
作者：
Wu Z. [1 ,3 ]
Qiu L. [1 ]
Zhu Y. [2 ]
Wu S. [1 ]
Yu X. [1 ]
机构：
[1] School of Environment and Science Engineering, Tongji University, Shanghai
[2] Tongji University Architectural Design and Research Institute (Group) Co. Ltd., Shanghai
[3] Shanghai Institute of Pollution Control and Ecological Safety, Shanghai
来源：
| 1600年 / Science Press卷 / 49期
关键词：
Electrical conductivity; Evaporative desalination; High-salt industrial wastewater; Humidification and dehumidification;
D O I：
10.11908/j.issn.0253-374x.21005
中图分类号：
学科分类号：
摘要：
Thirty-four different water samples of high-salt industrial wastewater were desalinated by humidification-dehumidification and evaporation experiments. Based on the experimental results, the feasibility study of the universal application of the humidification-dehumidification technology in actual industry is conducted. Combining with the water quality characteristics and treatment effects of different high-salt industrial wastewater, the general rule for judging the effect of this method on the treatment of high-salt industrial wastewater is summarized. The results show that the conductivity drop percentage ησ of the condensate of all wastewater in the experiment is above 80.0%, with the highest percentage of up to 99.9%. All the salinity of the condensate can reach the biochemical treatment standard, and the electrical conductivity of 32 condensates can be reduced to below 2 000 μS⋅cm-1. In addition, via the humidification-dehumidification technology, salt substances with a higher boiling point than water have a complete removal effect, salt substances with a lower boiling point than water and a larger ionization constant have a better removal effect, and salt substances with a lower boiling point than water and a smaller constants have a poor removal effect. © 2021, Editorial Department of Journal of Tongji University. All right reserved.
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页码：1435 / 1442
页数：7
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