Xing Xiangxuan, Huang Tinglin, Hu Ruizhu, Li Kai
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Shaanxi Provincial Collaborative Innovation Center for Water Pollution Control and Water Quality Safety, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Toxics. 2025 May 22;13(6):418. doi: 10.3390/toxics13060418.
This study proposes a circulating pelletized fluidized bed (CPFB) with micro-sand loading for treating high-algae surface water. Key operational parameters (coagulant dosage, flow rate) were optimized to simultaneously remove algae, turbidity, and disinfection byproduct precursors. Results revealed that 20 mg/L polyaluminum chloride (PACl) and 0.8 mg/L PAM achieved optimal removal of algae (density removal > 80%) and organic matter. The fluidized bed exhibited robust performance across algal species, with the highest dichloroacetonitrile (DCAN) precursor removal of 66.20%, demonstrating superior efficiency for trihalomethane precursors over haloacetic acids. These findings provide critical operational guidance for high-algae water treatment using fluidized beds.
本研究提出了一种用于处理高藻地表水的带微砂负载的循环造粒流化床（CPFB）。对关键运行参数（混凝剂投加量、流速）进行了优化，以同时去除藻类、浊度和消毒副产物前体。结果表明，20mg/L聚合氯化铝（PACl）和0.8mg/L聚丙烯酰胺（PAM）实现了对藻类（密度去除率>80%）和有机物的最佳去除。该流化床对各种藻类均表现出强劲性能，二氯乙腈（DCAN）前体的最高去除率为66.20%，表明其对三卤甲烷前体的去除效率优于卤乙酸。这些研究结果为使用流化床处理高藻水提供了关键的运行指导。
