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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Phosphorus Removal in Emergent Free Surface Wetlands
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Phosphorus Removal in Emergent Free Surface Wetlands

机译：去除自由表面湿地中的磷

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摘要

Constructed and natural wetlands are capable of absorbing new phosphorus loadings, and, in appropriate circumstances, can provide a low-cost alternative to chemical and biological treatment. Phosphorus interacts strongly with wetland soils and biota, which provide both short-term and sustainable long-term storage of this nutrient. Soil sorption may provide initial removal, but this partly reversible storage eventually becomes saturated. Uptake by biota, including bacteria, algae, and duckweed, as well as macrophytes, forms an initial removal mechanism. Cycling through growth, death, and decomposition returns most of the biotic uptake, but an important residual contributes to long term accretion in newly formed sediments and soils. Despite the apparent complexity of these several removal mechanisms, data analysis shows that relatively simple equations can describe the sustainable processes. Previous global first order removal rates characterize the sustainable removal, but do not incorporate any biotic features. This article reviews the relevant processes and summarizes quantitative data on wetland phosphorus removal.
机译：人工和天然湿地能够吸收新的磷负荷，并且在适当情况下可以提供化学和生物处理的低成本替代品。磷与湿地土壤和生物区系强烈相互作用，从而提供了这种养分的短期和可持续长期存储。土壤吸附可以提供初步清除，但这种部分可逆的存储最终会饱和。包括细菌，藻类和浮萍以及大型植物在内的生物群对细菌的吸收形成了最初的清除机制。在生长，死亡和分解过程中循环返回大部分生物摄取，但是重要的残留物有助于长期形成新沉积物和土壤。尽管这几种清除机制显然很复杂，但数据分析表明，相对简单的方程式可以描述可持续过程。以前的全球一阶清除率代表了可持续清除的特征，但没有任何生物特征。本文回顾了相关过程并总结了湿地除磷的定量数据。

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