文献类型：期刊文献

英文题名：High-efficiency microplastic removal in water treatment based on short flow control of hydrocyclone: Mechanism and performance

作者：Zhang, Tong[1,3];Li, Jianping[2];Yang, Danhui[1,3];Wang, Ziming[1,3];Zhao, Wei[1];Fu, Pengbo[1,3];Wang, Hualin[1,3]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai, Peoples R China;[2]Sichuan Univ, Coll Carbon Neutral Future Technol, Chengdu, Peoples R China;[3]East China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai, Peoples R China

年份：2024

卷号：267

外文期刊名：WATER RESEARCH

收录：;EI(收录号：20244017129442);WOS:【SCI-EXPANDED(收录号:WOS:001329392900001)】；

基金：This research was supported by the National Natural Science Foun-dation of China under Grant No. 52400080 and 52030001.

语种：英文

外文关键词：Microplastic separation; Hydrocyclone; Water treatment; Flow field; Numerical simulation

摘要：Microplastics have been identified as a potentially emerging threat to water environment and human health. Therefore, there is a pressing demand for effective strategies to remove microplastics from water. Hydrocyclone offers a rapid separation and low energy consumption alternative but require reduction of microparticle entrainment by short flow, which limits the effectiveness for small density differentials and ultralow concentrations separation. We proposed an enhanced mini-hydrocyclone with overflow microchannels (0.72 mm width) based on the active control of short flow in hydrocyclone for microplastic removal from water. The overflow microchannels effectively redirect the particles that would typically be entrained by the short flow, leading to higher separation efficiency. Simulation results show overflow microchannels effectively reduced short flow to 0.7 %, a reduction of up to 94 % compared to conventional hydrocyclones. The hydrocyclone with overflow microchannel demonstrated a removal efficiency exceeding 98 % for 8 mu m plastic microbeads at ultralow concentrations (10 ppm), which is a 33.7 % improvement over conventional hydrocyclone. Compared with other methods (e.g., filtration, adsorption, coagulation) for microplastic removal, this work achieves rapid separation capability and long period operation, highlighting hydrocyclone as a promising approach for microplastic removal in industry-scale water treatment.