Abstract Turbidity curtains, also called as turbidity barriers and silt curtains, were designed to contain plumes of suspended solids in water bodies. The high concentration of suspended solids in the raw water impacts on the costs of its treatment. Water with higher turbidity requires more coagulants in water treatment and needs a sludge management. In order to reduce turbidity in the water intake, the present study used a central composite rotational design (CCRD) for a set of 2 in-line turbidity curtains in a laboratory hydraulic flume. Three factors were analyzed: the grammage of the first barrier, the grammage of the second barrier and the solids application rate. The experimental design was made of 18 experiments. Furthermore one blank test was performed. The analyses of variance revealed which factors were significant for each answer. The first curtain efficiency was related positively with the first grammage and negatively with the second curtain grammage. The second curtain efficiency was related positively with the second grammage and application load, and negatively related with the first grammage. The system retention mass was influenced positively by the application load.

中文翻译：

---

淤泥幕在减少悬浮物方面的评价

摘要 浊幕，也称为浊障和淤泥幕，旨在遏制水体中的悬浮固体羽流。原水中悬浮固体的高浓度会影响其处理成本。浊度较高的水在水处理中需要更多的混凝剂，并且需要进行污泥管理。为了降低进水口的浊度，本研究对实验室水力水槽中的一组 2 个在线浊度幕使用了中央复合旋转设计 (CCRD)。分析了三个因素：第一道屏障的克重、第二道屏障的克重和固体施用率。实验设计由 18 个实验组成。此外还进行了一项空白试验。方差分析揭示了每个答案的显着因素。第一幕效率与第一幕重量呈正相关，与第二幕幕重量呈负相关。第二幕效率与第二克重和应用负载呈正相关，与第一克重呈负相关。系统保留质量受到应用负载的积极影响。