有机物对泥沙絮凝影响研究综述

A review of research on the influence of organic matter on sediment flocculation

天然水环境中存在不同类型的有机物,研究不同类型以及不同浓度的有机物与泥沙颗粒相互作用的过程及机理,是泥沙及污染物的迁移转化规律研究的重要内容。根据有机物类型、有机物浓度和有机物与其他无机因素耦合作用对泥沙絮凝影响的研究成果与进展,分析了泥沙在有机物作用下的絮凝机理,并总结了现有研究存在的不足。由于天然水体中的多种无机因素会与不同类型的有机物相互作用,但有机物类型及浓度对泥沙絮凝的影响还存在争议,也缺乏无机因素与有机物耦合作用时的泥沙絮凝的机理研究,因此需要进一步开展不同类型和浓度的有机物、无机因素与有机物耦合作用对泥沙絮凝过程及机理影响的研究。

The results and progress of the research on the type of organic matter, the content of organic matter, and the effect of organic matter and other physical and chemical factors on sediment flocculation are summarized. The research deficiencies are analyzed. Because a variety of physical and chemical factors in natural environment interact with different types of organic matter, the influence of the types and concentrations of organic matter on sediment flocculation is still controversial. Besides, there is a lack of research on sediment flocculation under the coupling effect of physical and chemical and organic matter factors. Therefore, it is necessary to further study the effects of different types and concentrations of organic matter and the coupling effect of physical and chemical and organic matter factors on sediment flocculation process and mechanism.