Datum
2023-11-16Schlagwort
500 Naturwissenschaften 540 Chemie KläranlageNitrateAmmoniumverbindungenPhosphorWassergüteMischkanalisationAbwasserMetadata
Zur Langanzeige
Aufsatz
Small villages and their sanitary infrastructure—an unnoticed influence on water quantity and a threat to water quality in headwater catchments
Zusammenfassung
In rural catchments, villages often feature their own, separate urban water infrastructure, including combined sewer overflows (CSOs) or wastewater treatment plants (WWTPs). These point sources affect the water quantity and quality of the receiving low order streams. However, the extent of this impact is rarely monitored. We installed discharge and water quality measurements at the outlet of two small, neighbouring headwater catchments, one that includes a village, a WWTP, and two CSOs, while the other is predominantly influenced by agricultural activities. We also deployed electrical conductivity (EC) loggers at the CSOs to accurately detect discharge times. Discharge from the WWTP and CSOs led to higher peak flows and runoff coefficients during events. Less dilution of EC and increasing ammonium-N (NH₄ − N) and ortho-phosphorus (oPO₄ − P) concentrations indicate a significant contribution of poorly treated wastewater from the WWTP. During CSO events, water volumes and nutrient loads were clearly elevated, although concentrations were diluted, except for nitrite-N (NO₂ − N) and particulate phosphorus (PP). Baseflow nitrate-N (NO₃ − N) concentrations were diluted by the WWTP effluent, which led to considerably lower concentrations compared to the more agriculturally influenced stream. Concentrations of oPO₄ − P, NH₄ − N, and NO₂ − N, which are most likely to originate from the WWTP, vary throughout the year but are always elevated. Our study shows the major and variable impact rural settlements can have on stream hydrology and water quality. Point sources should be monitored more closely to better understand the interaction of natural catchment responses and effects caused by sanitary infrastructure.
Zitierform
In: Environmental Monitoring and Assessment Volume 195 / Issue 12 (2023-11-16) eissn:1573-2959Förderhinweis
Gefördert im Rahmen des Projekts DEALZitieren
@article{doi:10.17170/kobra-202311309139,
author={Spill, Caroline and Ditzel, Lukas and Gaßmann, Matthias},
title={Small villages and their sanitary infrastructure—an unnoticed influence on water quantity and a threat to water quality in headwater catchments},
journal={Environmental Monitoring and Assessment},
year={2023}
}
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2023-12-01T14:18:49Z 2023-12-01T14:18:49Z 2023-11-16 doi:10.17170/kobra-202311309139 http://hdl.handle.net/123456789/15254 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ wastewater treatment plant (WWTP) nitrate ammonium phosphorus high-frequency data combined sewer overflow (CSO) 500 540 Small villages and their sanitary infrastructure—an unnoticed influence on water quantity and a threat to water quality in headwater catchments Aufsatz In rural catchments, villages often feature their own, separate urban water infrastructure, including combined sewer overflows (CSOs) or wastewater treatment plants (WWTPs). These point sources affect the water quantity and quality of the receiving low order streams. However, the extent of this impact is rarely monitored. We installed discharge and water quality measurements at the outlet of two small, neighbouring headwater catchments, one that includes a village, a WWTP, and two CSOs, while the other is predominantly influenced by agricultural activities. We also deployed electrical conductivity (EC) loggers at the CSOs to accurately detect discharge times. Discharge from the WWTP and CSOs led to higher peak flows and runoff coefficients during events. Less dilution of EC and increasing ammonium-N (NH₄ − N) and ortho-phosphorus (oPO₄ − P) concentrations indicate a significant contribution of poorly treated wastewater from the WWTP. During CSO events, water volumes and nutrient loads were clearly elevated, although concentrations were diluted, except for nitrite-N (NO₂ − N) and particulate phosphorus (PP). Baseflow nitrate-N (NO₃ − N) concentrations were diluted by the WWTP effluent, which led to considerably lower concentrations compared to the more agriculturally influenced stream. Concentrations of oPO₄ − P, NH₄ − N, and NO₂ − N, which are most likely to originate from the WWTP, vary throughout the year but are always elevated. Our study shows the major and variable impact rural settlements can have on stream hydrology and water quality. Point sources should be monitored more closely to better understand the interaction of natural catchment responses and effects caused by sanitary infrastructure. open access Spill, Caroline Ditzel, Lukas Gaßmann, Matthias doi:10.1007/s10661-023-12051-6 Kläranlage Nitrate Ammoniumverbindungen Phosphor Wassergüte Mischkanalisation Abwasser publishedVersion eissn:1573-2959 Issue 12 Environmental Monitoring and Assessment Volume 195 false
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