Integrating algae into constructed wetlands (CWs) enhances wastewater treatment, although the results vary. This review evaluates the role of algae in CWs and the performance of different algae-CW (A-CW) configurations based on literature and -analysis. Algae considerably improve N removal, although their impact on other parameters varies. Statistical analysis revealed that 70 % of studies report improved treatment efficiencies with A-CWs, achieving average removal rates of 75 % for chemical oxygen demand (COD), 74 % for total nitrogen and ammonium nitrogen, and 79 % for total phosphorus (TP). This review identifies hydraulic retention times, which average 3.1 days, and their varied impact on treatment efficacy. Mixed-effects models showed a slight increase in COD and TP removal efficiencies of 0.6 % every ten days in the A-CWs. Future research should focus on robust experimental designs, adequate algal storage and separation techniques, and advanced modeling to optimize the treatment potential of algae in CWs.

中文翻译：

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藻类构建的湿地废水处理综合系统：综述


将藻类整合到人工湿地（CW）中可以增强废水处理，尽管结果各不相同。本综述根据文献和分析评估了藻类在 CW 中的作用以及不同藻类 CW (A-CW) 配置的性能。尽管藻类对其他参数的影响各不相同，但它们大大提高了氮的去除率。统计分析显示，70% 的研究报告称 A-CW 提高了处理效率，化学需氧量 (COD) 平均去除率为 75%，总氮和铵氮平均去除率为 74%，总磷 (TP) 平均去除率为 79% 。本次审查确定了平均 3.1 天的水力保留时间及其对治疗效果的不同影响。混合效应模型显示，A-CW 中的 COD 和 TP 去除效率每十天略有增加 0.6%。未来的研究应侧重于稳健的实验设计、充足的藻类储存和分离技术以及先进的建模，以优化化学武器中藻类的处理潜力。