Quantifying contributions of domestic wastewater treatment systems to nutrient fluxes in stream headwaters

Raymond Flynn, J. Deakin, Les Brown, J.R. O'Brien, B. Misstear

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Effective implementation of the Water Framework Directive requires a reappraisal of conventional approaches to water quality monitoring. Quantifying the impact of domestic wastewater treatment systems (DWWTS) in Irish catchments is further complicated by high levels of natural heterogeneity. This paper presents a numerical model that couples attenuation to flow along different hydrological pathways contributing to river discharge; this permits estimation of the impact of DWWTS to overall nutrient fluxes under a range of geological conditions. Preliminary results suggest high levels of attenuation experienced
    before DWWTS effluent reaches bedrock play a significant role in reducing its ecological impact on aquatic receptors. Conversely, low levels of attenuation in systems discharging directly to surface water may affect water quality more significantly, particularly during prolonged dry periods in areas underlain by low productivity aquifers (>60% of Ireland), where dilution capacity is limited.
    Original languageEnglish
    Title of host publicationProcedings of International Symposium on Domestic Wastewater Treatment and Disposal
    Publication statusPublished - 11 Sep 2012
    EventInternational symposium on domestic wastewater treatment and disposal systems - Dublin, Ireland
    Duration: 10 Sep 201211 Sep 2012

    Conference

    ConferenceInternational symposium on domestic wastewater treatment and disposal systems
    CountryIreland
    CityDublin
    Period10/09/201211/09/2012

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  • Cite this

    Flynn, R., Deakin, J., Brown, L., O'Brien, J. R., & Misstear, B. (2012). Quantifying contributions of domestic wastewater treatment systems to nutrient fluxes in stream headwaters. In Procedings of International Symposium on Domestic Wastewater Treatment and Disposal