Effectiveness of constructed farm wetlands in attenuating faecal indicator fluxes to watercourses from yard runoff on livestock farms

David Kay; Aldwyn Clarke; John Crowther; Cheryl Davies; Carol A. Francis; Carl M. Stapleton; John Watkins; Mark D. Wyer

doi:10.1111/wej.12700

journal article Open Access Mar 06, 2021

Effectiveness of constructed farm wetlands in attenuating faecal indicator fluxes to watercourses from yard runoff on livestock farms

David Kay

Aldwyn Clarke John Crowther Cheryl Davies Carol A. Francis Carl M. Stapleton John Watkins Mark D. Wyer

Water and Environment Journal Vol. 35 No. 3 pp. 1085-1093 · Wiley

View at Publisher Save 10.1111/wej.12700

Abstract

AbstractConstructed farms wetlands (CFWs) are increasingly being used to treat faecally contaminated ‘dirty waters’ from yard areas on livestock farms. The findings of the present study, undertaken at the Pwllpeiran experimental CFW, West Wales, provide empirical data on the effectiveness of CFWs in attenuating faecal indicator organism (FIO) concentrations and fluxes to the receiving waters to which they discharge; and insight into the extent to which attenuation rates are affected by retention times within the CFW and seasonal factors. Based on the maximum flows that a CFW is being designed to treat, an equation is developed to enable estimates to be made of the size of wetland required to achieve a desired level of FIO attenuation. Other aspects of CFW design to optimise FIO attenuation are considered, including the construction of frequent baffles (transverse ridges), leaving parts of cells unvegetated and incorporating an initial settling pond.

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Citations

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References

Details

Published: Mar 06, 2021
Vol/Issue: 35(3)
Pages: 1085-1093
License: View

Authors

D

David Kay

Centre for Research into Environment & Health Department of Geography & Earth Sciences Aberystwyth University Aberystwyth UK

A

Aldwyn Clarke

RSK ADAS Ltd Llanafan UK

J

John Crowther

Centre for Research into Environment & Health University of Wales Trinity Saint David Lampeter UK

C

Cheryl Davies

CREH Analytical Ltd Leeds UK

C

Carol A. Francis

CREH Analytical Ltd Leeds UK

C

Carl M. Stapleton

Centre for Research into Environment & Health Department of Geography & Earth Sciences Aberystwyth University Aberystwyth UK

J

John Watkins

CREH Analytical Ltd Leeds UK

M

Mark D. Wyer

Centre for Research into Environment & Health Department of Geography & Earth Sciences Aberystwyth University Aberystwyth UK

Cite This Article

David Kay, Aldwyn Clarke, John Crowther, et al. (2021). Effectiveness of constructed farm wetlands in attenuating faecal indicator fluxes to watercourses from yard runoff on livestock farms. Water and Environment Journal, 35(3), 1085-1093. https://doi.org/10.1111/wej.12700

Effectiveness of constructed farm wetlands in attenuating faecal indicator fluxes to watercourses from yard runoff on livestock farms

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