基于冷冻过程的海水脱盐研究

发布时间：2018-03-22 08:19

  本文选题：冷冻脱盐　切入点：重力脱盐　出处：《水处理技术》2016年07期 　论文类型：期刊论文

【摘要】：基于盐溶液冷冻脱盐的基本原理,实验研究了冷冻脱盐、重力脱盐和离心脱盐的规律。结果表明,冷冻脱盐率随结冰质量比的增加先增大后减小,且冷冻温度越高脱盐效果越好,冷冻脱盐率最高能达到35%左右;而经过重力作用能使脱盐率提高到95%以上,且环境温度的升高有助于重力脱盐;离心时间对离心脱盐率的影响不明显,当离心机的转速从500 r/min增加到1 500 r/min时,离心脱盐率从30%左右迅速增加到80%以上。淡水产率是影响重力脱盐和离心脱盐的重要因素,离心脱盐是重力脱盐的加速过程。
[Abstract]:Based on the basic principle of freezing desalination of salt solution, the laws of freezing desalination, gravity desalting and centrifugal desalting are studied experimentally. The results show that the freeze-desalination rate increases first and then decreases with the increase of freezing mass ratio. The higher the freezing temperature, the better the desalination efficiency is, the highest desalination rate is about 35%, and the desalinization rate can be increased to more than 95% by gravity, and the increase of ambient temperature is helpful to gravity desalination. When the speed of centrifuge increased from 500 r/min to 1 500 r/min, the rate of centrifugal desalination increased rapidly from about 30% to more than 80%. The fresh water yield was an important factor affecting gravity desalination and centrifugal desalination. Centrifugal desalination is an accelerated process of gravity desalination.
【作者单位】： 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;
【基金】：北京市科委2015资源环境与可持续发展专项课题(Z151100001415007)
【分类号】：P747
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