Controlling the concentration of bioflocs is one of the main concerns in aquaculture systems with Biofloc Technology (BFT). Biofloc accumulation deteriorates the water quality and can negatively affect the production rates of the farmed river shrimp. This study describes and characterizes the settling velocity distribution of bioflocs generated with the addition of two carbon sources (molasses and chancaca) when applying the BFT for the rearing of the river shrimp Cryphiops caementarius. This study revealed that bioflocs generated with different carbon sources have different settling velocity curves. Regarding the mass fraction settling velocities, there were significant differences (P < 0.05) for mean solids fraction at similar withdrawn times between molasses and chancaca. The average settling velocities for bioflocs were 0.1044 ± 0.1224 cm s⁻¹ for molasses and 0.1131 ± 0.1225 cm s⁻¹ for chancaca. Therefore, a settling device operating with a given overflow rate will more efficiently remove bioflocs generated with chancaca than with molasses. The settling velocity curves obtained in this research contain valuable information to select appropriate devices for bioflocs and suspended solids removal in aquaculture systems with BFT.

利用生物絮凝技术（BFT）来控制生物絮凝剂的浓度是水产养殖系统中的主要问题之一。生物絮凝物的积累会降低水质，并可能对养殖河虾的生产率产生负面影响。这项研究描述并描述了在将BFT应用于河虾对虾Cryphiops caementarius的饲养时，添加两种碳源（糖蜜和可卡卡）而产生的生物絮凝物的沉降速度分布。。这项研究表明，由不同碳源产生的生物絮凝物具有不同的沉降速度曲线。关于质量分数沉降速度，在糖蜜和中加卡卡豆在相似的抽提时间，平均固体分数存在显着差异（P <0.05）。对于bioflocs平均沉降速度分别为0.1044±0.1224厘米小号^-1为糖蜜和0.1131±0.1225厘米小号^-1为chancaca。因此，以给定的溢流速率运行的沉降装置将比用糖蜜更有效地去除由可卡卡产生的生物絮凝物。在这项研究中获得的沉降速度曲线包含有价值的信息，可用于选择适当的设备，以利用BFT在水产养殖系统中去除生物絮凝物和悬浮固体。