混凝及其组合工艺对超滤处理二级出水中膜污染控制研究进展

Advances in research on fouling control of ultrafiltration in secondary effluent treatment by coagulation and its combined technologies

在保证水质和水量的前提下,如何有效地控制膜污染一直是膜过滤技术在水处理领域中的热点和难点问题。其中,混凝及其组合工艺在膜污染控制得到了广泛的研究。总结了国内外单独混凝、混凝/吸附和混凝/氧化在超滤膜污染控制方面的研究进展,阐述了各预处理技术机制与特点,分析了混凝及其组合工艺对膜污染的控制机制,最后展望各组合技术的应用与发展前景。

Under the premise of ensuring water quality and quantity,how to effectively control membrane fouling has always been a difficult and key issue in the field of water treatment by membrane filtration technology.Among them,coagulation and combined technologies have been extensively studied in membrane fouling control.This article summarized the research progress of individual coagulation,coagulation/adsorption and coagulation/oxidation in ultrafiltration membrane fouling control at home and abroad,expounds the mechanism and characteristics of each pretreatment technology,and analyzes the membrane fouling caused by coagulation and its combined processes.In the end,we look forward to the application and development prospects of each combination technology.