Scaling in reverse osmosis seawater desalination: Mechanism and prevention—A literature review

IF 1.6 4区工程技术 Q3 ENGINEERING, CHEMICAL

Canadian Journal of Chemical Engineering Pub Date : 2024-08-01 DOI:10.1002/cjce.25427

Jiaxuan Shen, Xiaodong Wang, Xiaoyi Zhu, Bojin Tang, Cong Liu, Wan Li, Xueqiang Gao

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Abstract

There is currently a huge imbalance between the demand and supply of freshwater resources. The shortage of fresh water can be mitigated by seawater desalination. Reverse osmosis (RO) is currently the most popular desalination technology around the world. Despite its various advantages, fouling has been one of its major limitations of RO. Membrane fouling can be divided into four categories: colloidal fouling, inorganic fouling, organic fouling, and biofouling. Precipitation of inorganic salts of small solubility, among which CaCO₃, CaSO₄, BaSO₄, and SiO₂ are the most common ones, are the cause of inorganic fouling, which is commonly referred to as scaling. Pretreatment technologies for prevention or mitigation of scaling in the RO process can be classified as conventional pretreatment technologies, which include water softening and scale inhibitors, and membrane-based pretreatment technologies which include nanofiltration, forward osmosis, and membrane surface modification.

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反渗透海水淡化中的结垢：机理和预防--文献综述

目前，淡水资源供需严重失衡。海水淡化可以缓解淡水短缺问题。反渗透（RO）是目前全球最流行的海水淡化技术。尽管反渗透具有各种优势，但结垢一直是其主要局限性之一。膜污垢可分为四类：胶体污垢、无机污垢、有机污垢和生物污垢。溶解度小的无机盐沉淀是造成无机污垢的原因，其中最常见的是 CaCO3、CaSO4、BaSO4 和 SiO2，也就是通常所说的结垢。防止或减轻反渗透工艺结垢的预处理技术可分为传统预处理技术（包括水软化和阻垢剂）和膜预处理技术（包括纳滤、正渗透和膜表面改性）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Canadian Journal of Chemical Engineering 工程技术-工程：化工

CiteScore

3.60

自引率

14.30%

发文量

448

审稿时长

3.2 months

期刊介绍： The Canadian Journal of Chemical Engineering (CJChE) publishes original research articles, new theoretical interpretation or experimental findings and critical reviews in the science or industrial practice of chemical and biochemical processes. Preference is given to papers having a clearly indicated scope and applicability in any of the following areas: Fluid mechanics, heat and mass transfer, multiphase flows, separations processes, thermodynamics, process systems engineering, reactors and reaction kinetics, catalysis, interfacial phenomena, electrochemical phenomena, bioengineering, minerals processing and natural products and environmental and energy engineering. Papers that merely describe or present a conventional or routine analysis of existing processes will not be considered.