摘要
介绍了海水淡化副产物浓盐水的产生过程、主要污染物、水质特征和对环境和人体易产生的危害,总结了排放、深井注射、热处理技术、膜分离方法等处理浓盐水的技术方法、工艺原理、使用条件、处理效果及其优缺点。提出了未来浓盐水零排放技术,通过对其原理的分析明确了该技术的发展优势(实现水和固体产物的双回收)以及限制目前规模化推广的运营成本高、产物组成复杂和温室气体排放的缺陷。目前没有一项单独的技术可以实现零液体技术,必须借助膜分离和电渗析或蒸馏的结合。能否利用在处理过程中产生的废热来与膜分离相结合从而代替后续蒸馏所消耗的热量,能否开发新技术来独立实现ZLD,是未来研究的方向。
The generation process, main pollutants, water quality characteristics and harm to environment and human body of by-product concentrated brine from seawater desalination were introduced, and the technical methods, process principles, operating conditions, treatment effects and advantages and disadvantages of the treatment of concentrated brine were summarized, such as discharge, deep well injection, heat treatment technology and membrane separation method. The future zero-discharge technology of concentrated brine was put forward, and the development advantages of this technology(achieving double recovery of water and solid products) and the limitations of current large-scale promotion such as high operating cost,complex product composition and greenhouse gas emission were identified through the analysis of its principle. At present, there is no single technology that can achieve zero-liquid technology. It must rely on a combination of membrane separation and electrodialysis or distillation. Whether the waste heat generated in the treatment process can be combined with membrane separation to replace the heat consumed by subsequent distillation, and whether new technologies can be developed to independently realize ZLD is the direction of future research.
作者
王琳
王欣婷
孔飞飞
WANG Lin;WANG Xinting;KONG Feifei(Ocean University of China of College of Environmental Science and Engineering,Qigdao 266000,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2021年第6期1-5,共5页
Technology of Water Treatment
基金
国家重点研发计划项目(2018YFC0408000,2018YFC0408004)。
关键词
海水淡化
浓盐水
热处理技术
膜分离方法
seawater desalination
concentrated brine
heat treatment technique
membrane separation method
