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研究过氧化氢(H2O2)预氧化联合聚合硫酸铁(PFS)对巢湖单细胞铜绿微囊藻的处理效果与作用机制，优化药剂投加参数，为富营养化湖泊单细胞微囊藻的安全高效防控提供技术支撑与理论依据。以巢湖分离的单细胞铜绿微囊藻为研究对象，通过单因素梯度实验确定PFS单独絮凝的最佳投加范围，设置不同H2O2浓度梯度开展预氧化联合絮凝实验，测定浊度、藻细胞去除率、Zeta电位、铁残留量及藻细胞光合活性与恢复特性，综合评价联合工艺的处理效能。结果表明：(1)单独投加PFS絮凝除藻时，其最佳投加量为75～100 mg/L，该剂量下藻细胞去除率接近峰值，浊度降幅达97.3%，体系铁残留比率不足0.1%；(2)PFS投加量为75 mg/L时，5 mg/L H2O2可显著强化絮凝效果，H2O2超过5 mg/L后絮凝增效不显著，且会导致藻细胞大量破裂、水体浊度升高；(3)5 mg/L H2O2对微囊藻的光合活性抑制效果不明显，10 mg/L H2O2不仅能有效抑制微囊藻光合活性，还能降低溶液中铁离子含量，15 mg/L及以上H2O2可实现藻细胞光合活性的不可逆抑制。10 mg/L H2O2预氧化联合75 mg/L PFS为最佳处理工况，可兼顾单细胞微囊藻去除的有效性、控藻持久性与水质安全性，适用于巢湖单细胞微囊藻的应急处置与常规防控。
Abstract：Flocculation and sedimentation are commonly used as algae removal techniques in water treatment， and the effectiveness， persistence， and safety of algae removal must be considered when eliminating algal cells from raw water. In this study， unicellular Microcystis aeruginosa from Chaohu Lake was used. By optimizing the dosages of H2O2 and polyferric sulfate (PFS)， the optimal dosage was selected， and the effects of H2O2 pre-oxidation combined with PFS treatment on flocculation efficiency and algal photosynthetic activity were analyzed. The results showed that: (1) When PFS was used alone for flocculation and algae removal， the optimal dosage ranged from 75 to 100 mg/L. (2) When the PFS dosage was 75 mg·L?1， 5 mg·L?1 H2O2 significantly enhanced the flocculation efficiency of PFS. H2O2 concentrations exceeding 5 mg/L did not further improve flocculation and caused extensive algal cell rupture instead， increasing solution turbidity. (3) A concentration of 5 mg/L H2O2 had an insignificant inhibitory effect on the photosynthetic activity of Microcystis aeruginosa， while 10 mg/L H2O2 not only effectively inhibited photosynthetic activity but also reduced iron ion content in the solution. Comprehensive analysis indicated that the optimal H2O2 dosage was 10 mg/L， and the optimal PFS concentration was 75 mg/L. Therefore， the combined use of H2O2 and PFS for treating Microcystis aeruginosa can ensure the effectiveness and persistence of the treatment process while also safeguarding water quality.
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基本信息:
DOI：10.15928/j.1674-3075.202601280001
中图分类号:X524
引用信息:
[1]谭啸,魏艺嘉,刘磊,等.H_(2)O_(2)与聚合硫酸铁联合处理巢湖单细胞微囊藻效果分析[J].水生态学杂志().DOI:10.15928/j.1674-3075.202601280001.
基金信息:
安徽省引江济淮集团有限公司科技项目（YJJH-ZT-ZX-202506）
2026-04-10
2026-04-10
2026-04-10