渔业现代化2025，Vol.52Issue(5)：35-43,9.DOI:10.26958/j.cnki.1007-9580.2025.05.004
涡旋式竖流沉降过滤器沉淀分离特性分析
Analysis of the precipitation and separation characteristics of the vortex vertical flow settling filter
摘要
Abstract
To address the defects of traditional vertical flow sedimentators,such as low particle interception efficiency under high hydraulic loads and vulnerability to turbulent interference,this study designed a vortex-type vertical flow sedimentation filter.By integrating the principles of vertical flow sedimentation and cyclone separation,and combining CFD-DPM coupled simulation with experimental verification,the study systematically explored its enhanced removal mechanism for suspended particulates in recirculating aquaculture systems(RAS).Numerical simulations showed that the vortex structure optimizes the flow field distribution through the synergistic effect of centrifugal force and gravity,effectively suppressing particle escape.In comparative tests,under a hydraulic load of 15 m3/(m2·h),the vortex-type filter achieved interception rates of 72.92％±7.40％and 59.24％±5.15％for influent total suspended solids(TSS)concentrations of 25 mg/L and 50 mg/L,respectively,representing improvements of 28.6％and 36.0％compared to traditional devices(P＜0.05).However,there was no significant difference in the variation of effluent TSS concentration with increasing flow rate between the two devices(P＞0.05).The study demonstrates that the vortex design shortens the hydraulic retention time through a cyclone-enhanced mechanism,significantly improving the stability of particle interception under high-load conditions and addressing the performance degradation of traditional devices caused by increased flow velocity.This achievement provides a solution combining high efficiency and engineering applicability for optimizing solid-liquid separation equipment in RAS.关键词
循环水养殖系统/涡旋式竖流沉降过滤器/颗粒物截留效率/水力负荷/总悬浮物去除Key words
recirculating aquaculture systems/vortex vertical flow settling filter/particle retention/hydraulic load/TSS removal分类
环境科学引用本文复制引用
管崇武,刘安东,陈石..涡旋式竖流沉降过滤器沉淀分离特性分析[J].渔业现代化,2025,52(5):35-43,9.基金项目
国家重点研发计划项目"智能养殖关键装备与尾水资源化利用技术研发(2023YFD2400402) （2023YFD2400402）
国家现代农业产业技术体系项目(CARS-47-G20) （CARS-47-G20）
中国水产科学研究院科技创新团队项目(2023TD83) （2023TD83）
