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Effects of organic matter and salinity on the flocculation of kaolinites in a settling column
Journal of Hydrodynamics ( IF 2.5 ) Pub Date : 2021-03-05 , DOI: 10.1007/s42241-021-0017-9
Zhong-yue Li , Jin-feng Zhang , Qing-he Zhang , Xiao-teng Shen , Tong-qing Chen

The flocculation and the settling of the cohesive sediment play an important role in the sediment transport process, and they are affected by many factors. On the coasts and in the estuaries, the organic matter and the salinity are two significant factors. In this study, experiments are carried out to evaluate the flocculation and the settling of the kaolinite in cases of various organic matter and salinity solutions in quiescent waters. The optical multi-channel suspended concentration monitoring system is used to measure the sediment concentration and the floc size. The results show that the settling velocity decreases with the increase of the organic matter content, and the floc size increases with the increase of the organic matter content. In addition, an empirical formula for the settling velocity under the influence of the organic matter and the salinity based on the experimental results is proposed.



中文翻译:

有机物和盐分对沉降塔中高岭石絮凝的影响

粘性沉积物的絮凝和沉降在沉积物的运输过程中起着重要作用,并且受许多因素的影响。在沿海和河口,有机物和盐度是两个重要因素。在这项研究中,进行了一些实验,以评估在静止水中各种有机物和盐溶液中高岭石的絮凝和沉降。光学多通道悬浮浓度监测系统用于测量沉积物浓度和絮凝物尺寸。结果表明,沉降速度随有机质含量的增加而降低,絮凝物的大小随有机质含量的增加而增加。此外,

更新日期:2021-03-08
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