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Water quality of stormwater generated from an airport in a cold climate, function of an infiltration pond, and sampling strategy with limited resources
Department of Environment and Minerals Resources, Greenland Institute of Nature Resources.
Ramboll Sverige AB.
Luleå tekniska universitet .
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
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2018 (English)In: Environmental Monitoring & Assessment, ISSN 0167-6369, E-ISSN 1573-2959, Vol. 190, no 1, 4Article in journal (Refereed) Published
Abstract [en]

Monitoring pollutants in stormwater discharge in cold climates is challenging. An environmental survey was performed by sampling the stormwater from Luleå Airport, Northern Sweden, during the period 2010-2013, when urea was used as a main component of aircraft deicing/anti-icing fluids (ADAFs). The stormwater collected from the runway was led through an oil trap to an infiltration pond to store excess water during precipitation periods and enhance infiltration and water treatment. Due to insufficient capacity, an emergency spillway was established and equipped with a flow meter and an automatic sampler. This study proposes a program for effective monitoring of pollutant discharge with a minimum number of sampling occasions when use of automatic samplers is not possible. The results showed that 90% of nitrogen discharge occurs during late autumn before the water pipes freeze and during snow melting, regardless of the precipitation during the remaining months when the pollutant discharge was negligible. The concentrations of other constituents in the discharge were generally low compared to guideline values. The best data quality was obtained using flow controlled sampling. Intensive time-controlled sampling during late autumn (few weeks) and snow melting (2 weeks) would be sufficient for necessary information. The flow meters installed at the rectangular notch appeared to be difficult to calibrate and gave contradictory results. Overall, the spillway was dry, as water infiltrated into the pond, and stagnant water close to the edge might be registered as flow. Water level monitoring revealed that the infiltration capacity gradually decreased with time.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 190, no 1, 4
National Category
Geochemistry
Research subject
Applied Geochemistry
Identifiers
URN: urn:nbn:se:ltu:diva-66999DOI: 10.1007/s10661-017-6375-7PubMedID: 29209818OAI: oai:DiVA.org:ltu-66999DiVA: diva2:1165897
Note

Validerad;2018;Nivå 2;2017-12-15 (andbra)

Available from: 2017-12-14 Created: 2017-12-14 Last updated: 2017-12-18Bibliographically approved

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