基于冷冻过程的海水浓缩实验研究  

Experimental Study on the Effect of Freezing Seawater Concentration Factors

作　　者：杨晖[1] 姚越欣 李恒松 

机构地区：[1]北京建筑大学,北京市供热、供燃气、通风及空调工程重点实验室,北京100044

出　　处：《水处理技术》2016年第9期68-72,共5页Technology of Water Treatment

基　　金：北京市科委2015资源环境与可持续发展专项课题(Z151100001415007)

摘　　要：基于冷冻法对NaCl质量分数分别为3%(模拟原海水)、6%(模拟淡化后浓海水)的盐水进行冷冻、重力、离心处理,分析其剩余浓海水NaCl含量及规律,观测达到日晒制卤NaCl质量分数17.7%的标准条件,并分析合理性。结果表明,考虑回收率等因素,采用冷冻法、重力法或离心法无法直接得到NaCl质量分数17.7%的盐水,但可以直接得到大量NaCl质量分数9%的盐水(淡化后浓海水最大NaCl含量)。若用于制盐,可以节约占地面积,加快制盐速度。Based on freezing desalination method, the simulated sea water with the mass fraction of NaCl of 3% and the desalinated simulated sea water with the mass fraction of NaCl of 6% were both furtherly purified through freezing, gravity-induced desalination and centrifugal desalination. Though analysis of the salt contents in concentrated solutions as well as the principles, the optimal conditions leading to salt solutions with mass fraction of NaCl of 17.7% was concluded, and the feasibility was further testified. The result showed that it was hard to obtain salt solution with mass fraction of NaCl of 17.7% through direct freezing, gravity-induced desalination and centrifugal desalination method. However, the salt solution with mass fraction of NaCl of 9% （Concentrated salt solution after desalination） could be obtained directly from abovementioned process. Less manufacturing areas was required and faster producing rate can be obtained if the resultant solution was applied to make salt.

关 键 词：海水浓缩 冷冻法 重力 离心 

分 类 号：P747.7[天文地球—海洋科学]