混凝技术去除水中新兴污染物的研究进展

常规水处理工艺通常不能完全将水中新兴污染物(ECs)去除,残留的污染物仍然具有相当大的环境风险,如何有效地去除水中痕量新兴污染物是一个亟待解决的难题。本文概述了新兴污染物的来源、种类和危害,并分析了混凝工艺去除新兴污染物的可行性,重点介绍了新兴污染物性质、混凝剂种类和投加量、pH和水中溶解性物质对混凝效果的影响机制,并介绍了混凝与氧化、膜过滤及吸附等工艺的组合集成技术。在此基础上,对未来混凝技术去除新兴污染物的研究方向和发展趋势进行了展望。

Current state of coagulation progress for emerging organic contaminants removal from water

The emerging contaminants (ECs) have been found to be inadequately removed from water through traditional water treatment processes.It is vital that effective water treatment processes are developed to remove trace ECs,and thus ensure that any potential environmental risks caused by ECs could be eliminated.The origins,types,risks of ECs and the applicability of coagulation processes to remove ECs are overviewed,and the influence mechanisms of contaminant properties,coagulants types and dosage,pH and dissolved matter in the water for the removal of ECs through coagulation are comprehensively discussed.Besides,the hybrid processes of coagulation with oxidation,membrane filtration and adsorption are also reviewed.Based on these researches,the future research scope of the coagulation in removing ECs from water is provided.