Four Years of Sediment and Phosphorus Monitoring in the Kraichbach River Using Large-Volume Samplers

Allion, Katharina; Kiemle, Lisa; Fuchs, Stéphan

doi:10.3390/w14010120

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…The duration of the pump activation and The LVS is a flow-proportional automatic sampler that collects mixed samples of approximately 1000 L from the river. It consists of a stainless steel tank of 1000 L, a gauging station, a pump, a fill-height sensor, a three-way valve, and a control unit, which operates the automatic sampler [19,20]. Initially, the system calculates the discharge of the river.…”

Section: Estimation Of Riverine Tp Loadmentioning

confidence: 99%

Assessment of Phosphorus Input from Urban Areas in the Passaúna River and Reservoir

Sotiri

Kishi

Hilgert

et al. 2022

Water

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Elevated phosphorus loads play an important role in the deterioration of water quality and can subsequently pose a threat to the aquatic organisms in a river or a standing water body. The accurate assessment of total phosphorus (TP) fluxes from a catchment is of high importance to the well-being of the entire river ecosystem. In this study, we assessed the yearly input of TP from the urban areas of the Passaúna catchment in southern Brazil. The catchment drains into the eponymous reservoir, which provides drinking water for more than 800,000 inhabitants of the Curitiba Metropolitan region. The protection of the water quality in the river as well as in the reservoir is of paramount importance, yet high phosphorous inputs have been detected. For adequate protection, the catchment emissions need to be accurately assessed. Initially, the TP concentration in the river sediment was determined in order to assess the relationship between the TP export of the urban areas and the TP stock of the river. It was found that in areas with a higher share of urban land cover and especially in areas with a lack of sewage treatment, the TP concentration in the sediment reached up to 6700 mg/kg. The assessment of the overall TP input from urban areas was based on a regionalized emission-modeling approach, combined with data from long-term water quality monitoring of the river. The monitoring station established upstream of the Passaúna Reservoir inflow provided an initial assessment and the necessary output for the validation and calibration of the model. From the drainage basin of the monitoring station, an overall TP input of 2501 kg/a (0.31 kg/(ha a)) was measured between 1 May 2018 and 1 May 2019 (3508 kg TP/a or 0.23 kg/(ha a) when extrapolating the overall catchment of the Passaúna Reservoir). The monitoring data indicated that the TP input increases during the wet months of the year. The sediment stock of the river also plays an important role in the interannual budget of TP. During the timespan of one year, many deposition–resuspension events happen. The resuspended material is included in the baseflow and hinders the differentiation between urban and nonurban input. After calibration, the model was able to predict the yearly input of TP from the urban areas of the Passaúna catchment. In addition, the share of inhabitants who are not connected to the sewer system was assessed. Overall, the combination of monitoring and modeling in this study offers a valuable overview of the TP dynamics of the system, while the model ensures reproducibility with high accuracy at the same time.

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Section: Estimation Of Riverine Tp Loadmentioning

confidence: 99%

Assessment of Phosphorus Input from Urban Areas in the Passaúna River and Reservoir

Sotiri

Kishi

Hilgert

et al. 2022

Water

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“…Although phosphorus (P) is a limited resource, a total of approx. 15,400 t of P per year is discharged into German surface waters, including all input pathways [1] (p. 109), [2]. The urban input pathways of municipal wastewater treatment plants (WWTPs) and sewer systems account for the largest shares [1,3].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Situation and Learnings of the Precipitant Shortage in the German Wastewater Sector

Eichholz,

Barjenbruch,

Bannick

et al. 2023

Resources

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Wastewater treatment companies are particularly confronted by the energy and supply crisis resulting from the war in the Ukraine. More specifically, production and supply problems with precipitant production have shown that today’s wastewater treatment technology in Germany is not crisis-proofed and must become more resilient. The aim of this paper was to determine a required precipitant quantity for Germany with regard to chemical phosphorus elimination, as well as the expected shortfalls due to the shortage situation. Furthermore, possible solutions were identified for how the precipitant can be saved or substituted. Study surveys were conducted to gather data for a meaningful response regarding the operators (wastewater treatment plants, industry, and water suppliers), manufacturers, and the German federal states. A recommendation is given on what a path to more resilient wastewater management with a focus on phosphorus elimination could look like. Based on the data obtained, the report focused on wastewater engineering issues for wastewater treatment plants and industry. The results of the study are relevant for decision-makers, researchers, and operators in the wastewater sector in order to intervene in the market themselves if necessary, e.g., money for production or conversion to biological phosphorus elimination.

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Deep learning-based total suspended solids concentration classification of stream water surface images captured by mobile phone

Hacıefendioğlu,

Baki,

Başağa

et al. 2023

Environ Monit Assess

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Four Years of Sediment and Phosphorus Monitoring in the Kraichbach River Using Large-Volume Samplers

Cited by 4 publications

References 9 publications

Assessment of Phosphorus Input from Urban Areas in the Passaúna River and Reservoir

Assessment of Phosphorus Input from Urban Areas in the Passaúna River and Reservoir

A Study on the Situation and Learnings of the Precipitant Shortage in the German Wastewater Sector

Deep learning-based total suspended solids concentration classification of stream water surface images captured by mobile phone

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