Research on Fractional Crysallization Technologies for Recovering Salts from High Salinity Wastewater

Abstract With the rapid development of China's national economy and the continuous expansion of industrial scale, the industrial water consumption and industrial wastewater volume have also increased, especially in the coal chemical, steel, pharmaceutical and other industries. This has not only aggravated the shortage of water resources in China, but also adversely affected the human living environment due to the high salinity wastewater generated in many fields. Additionally, how to deal with high salinity wastewater has become a technical bottleneck due to the wide sources of high salinity wastewater and the complexity of the compostions of the wastewater. At present, the methods for treating high salinity wastewater mainly include electrolysis, reverse osmosis, permeation, distillation, incineration, evaporative crystallization, etc. But most of these methods have high processing costs, poor operational stability, or secondary pollution problems. The fractional crystallization technology has broad application prospects because of its low energy consumption, green process and salt-distributing products. In this paper, the commonly used high salinity wastewater crystallization technologies will be summarized and analyzed. This will help to promote research and application on near-zero emissions and resource utilization of high salinity wastewater.

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	Huang Xin
	Chen Yegang
	Su Nannan
	Lu Haijiao
	Li Jing
	Li Juanfen
	Hao Hongxun

Keywords： high salinity wastewater； fractional crystallization； resource utilization； near-zero emissions

Received 2018-10-21;

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Huang Xin, Chen Yegang, Su Nannan, Lu Haijiao, Li Jing, Li Juanfen, Hao Hongxun.Research on Fractional Crysallization Technologies for Recovering Salts from High Salinity Wastewater[J] Chemcial Industry and Engineering, 2019,V36(1): 10-23

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