Optimizing particle translation and self-rotation by adjusting gravity-driven hydrocyclone inclination angle for separation and activation of granular sludge - Jinyi Tian; Yuqing Gao; Xiaoyun Ye; Fei Huang; Yuwei Zhao; Tong Zhang; Wei Zhao; Xiurong Chen; Hualin Wang; Shibo Kuang (Journal of Water Process Engineering, 2023)