Inorganic scaling in reverse osmosis (RO) desalination: Mechanisms, monitoring, and inhibition strategies
Inorganic scaling in reverse osmosis (RO) desalination: Mechanisms, monitoring, and inhibition strategies
复制标题
反渗透 (RO) 海水淡化中的无机结垢：机制、监测和抑制策略
DOI：
10.1016/j.desal.2019.07.005
复制
发表时间：
2019-10-15
期刊：
影响因子：
9.9
通讯作者：
Das, Rasel
中科院分区：
文献类型：
--
作者：
Liu, Qian;Xu, Guo-Rong;Das, Rasel
经过数十年的发展，反渗透海水淡化已发展成为一项性能优异的成熟技术，可以满足全球新兴的淡水需求。但近年来，随着关注焦点的转移，经济效益、生态环境友好性已成为人们高度关注的问题。反渗透工艺中，浓盐水一直被排放，既不利于经济效益，也可能对生态环境带来潜在的破坏。提高回收率是减少盐水排放、增强环境友好性和经济效益的有效策略。然而，由于浓度不断增加，矿物离子过饱和导致无机结垢，回收率不断提高。无机结垢会堵塞膜，大大降低渗透性，甚至中断工程运行。因此，提高RO海水淡化的防垢能力至关重要。在这篇综述文章中，结合评论和展望，分析了反渗透海水淡化防垢策略的最新发展。希望本文的内容能够为深入了解反渗透海水淡化中的结垢问题提供思路，为探索更先进的防垢技术提供一些线索，从而提高反渗透海水淡化的经济效益，增强其环境友好性。
With decades of developments, RO desalination has evolved into a mature technology with excellent performance to meet emergent global freshwater needs. Nevertheless, the economic effectiveness, ecological and environmental friendship have evolved into the concerns being paid great attention with the shift of focus in recent years. In RO process, the concentrated brine was always discharged, which is unfavorable for economical effectiveness and also might bring potential damage to ecology and environment. Increasing recovery rate is an effective strategy that could decrease brine discharge, enhance environmental friendship and economic benefit. However, increasing recovery rate is encountered with inorganic scaling, which is induced by supersaturation of mineral ions due to the continuously increasing concentration. Inorganic scaling would block membranes, dramatically decrease permeations, and even interrupt engineering operation. Thus, enhancing the anti-scaling capability of RO desalination is vitally important. In this review paper, state-of-the-art developments of anti-scaling strategies in RO desalination are analyzed combined with comments and prospective. It is expected that the contents in this paper could offer an insight in deeper understanding the scaling in RO desalination and provide some clues for exploring more advanced anti-scaling technologies, and thereby increase the economic benefit of RO desalination and enhance their environmental friendship.