Capa do livro de Agricultural runoff treatment with phosphorus-retaining materials
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Agricultural runoff treatment with phosphorus-retaining materials

Ditch filters

LAP LAMBERT Academic Publishing (2016-02-11 )

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Researchers have studied and implemented numerous methods to curb non-point phosphorus (P) losses during the past decades. To further reduce P losses from agriculture, current P abatement methods must be amended with additional techniques. One such technique involves the use of P-retaining materials as filters placed in ditches within agricultural areas. This study encompasses a set of laboratory, meso- and large-scale set-ups to identify potential P-retaining materials available in Finland. The laboratory studies investigated the P retention potential of fresh and weathered Ca-rich as well as Fe-rich materials in flow-through tests. The most promising material was further employed in meso- and large-scale filters. As the application of the material was scaled up, and influent P concentration declined, cumulative P retention decreased. The meso-scale experiment indicated that the P removal efficiency decreased also due to the presence of dissolved organic carbon in the influents. As for the large filter, the formation of preferential water pathways reduced its efficiency. Moreover, in high flow conditions, the large filter treated only a small portion of the incoming flow.
LAP LAMBERT Academic Publishing
Por (autor):
Aleksandar Klimeski
Número de páginas:
Publicado em:
Tecnologia de edificação e ambiente
39.9 €
Palavras chave:
Dissolved organic carbon, Filters, precipitation, sorption, P-retaining materials, P retention, upscaled application, material alteration, preferential flows, high flows, permeable reactive barriers

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